Seismic Fragility Assessment And Resilience Of Reinforced Masonry Shear Wall Systems

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Seismic Fragility Assessment and Resilience of Reinforced Masonry Shear Wall Systems

Author : Shadman Hosseinzadeh
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)

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Book Synopsis Seismic Fragility Assessment and Resilience of Reinforced Masonry Shear Wall Systems by : Shadman Hosseinzadeh

Download or read book Seismic Fragility Assessment and Resilience of Reinforced Masonry Shear Wall Systems written by Shadman Hosseinzadeh and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reinforced Masonry Shear Walls (RMSWs) are commonly used in low- to high-rise buildings as the lateral load resisting system. There have been several experimental and analytical studies that evaluated the seismic response of RMSW either as a single element (i.e., planar rectangular walls) or as a building consisting of planar walls. However, research on Reinforced Masonry Shear Walls (RMSWs) with end-confined Boundary Elements and flanged shear walls are scarce, especially considering the effects of design parameters on the system's seismic inelastic response. The end confined RMSWs proved to have a higher level of ductility since they can postpone the reinforcement buckling in compression while increasing the compressive strength of the shear walls' component at the same time. The objectives of the current study are to: (i) assess the seismic performance and collapse capacity of the RMSW with end confined Boundary Elements and Flanged shear walls at both structural element, and entire building level, (ii) evaluate the seismic resilience and functionality of the RMSW system when subjected to severe earthquake events, (iii) to quantify and assess the resilience index versus the uncertainty of the studied parameters. To achieve the first goal, at the structural element level, the RM shear walls were designed with different heights to investigate the effect of the wall's height on its seismic performance. The impact of utilizing flanged walls was assessed and characterized through new seismic performance standards and assessment approaches. In this respect, a modified macro-modelling approach has been proposed to numerically model and capture the inelastic behaviour of the RM shear walls. The proposed model can capture both flexural and shear deformations. The nonlinear model was first validated against experimental data of RM rectangular and flanged shear walls and walls with masonry boundary elements (MBEs); afterwards, the model has been utilized in simulating RM flanged wall archetypes. Collapse risk evaluation has been conducted by subjecting the wall's numerical model to various ground motions scaled at different intensity levels. Nonlinear static pushover analysis and incremental dynamic analysis (IDA) has been conducted on numerical models. Quantification of the seismic parameters of the flanged wall system, including period-based ductility, overstrength, and collapse margin ratios, has been conducted to help better understanding the seismic response and collapse capacity of the component. Lastly, the seismic resilience of the archetypes against the expected collapse risk was evaluated, before and after adding flanges and boundary elements to the walls, in terms of functionality curves. Damage levels were considered as performance level functions correlated to the earthquake intensity and were used to estimate total loss and recovery time of the archetypes. To reach the second objective, the study is extended to investigate the impact of using end-confined masonry boundary elements at the building level by the adoption of such elements for multi-storey RMSW buildings. In this respect, the developed macro-model was updated to take the impact of out-of-plane walls' shear flexibility into account, after adding an out-of-plane shear spring. The outcome of the test results of a one-third scale two-storey building was used to validate the modelling approach at the system level. Subsequently, the archetype buildings were subjected to multiple ground motion records using Incremental Dynamic Analysis to identify the collapse initiation and derive fragility curves. The results indicate a significant enhancement of the resilience index by using end-confined Masonry Boundary Elements (MBEs). To accomplish the third objective, a probabilistic approach was utilized to quantify the seismic resilience index of the RMSW building with MBEs located in a high seismic zone of Canada. The uncertainties associated with the losses and expected recovery time and sensitivity of each parameter were studied and depicted using the resilience index threshold and the Monte Carlo simulation method. The storey shear contribution of in-plane and out-of-plane walls were also quantified for all archetype buildings. The results indicate sufficient seismic resilience of ductile RMSW buildings with MBEs when subjected to the Maximum Credible Earthquake (MCE). The findings of this part are crucial for earthquake mitigation practice and disaster risk reduction plans.

Seismic Performance Evaluation of Reinforced Masonry Wall Systems with Frame Modeling

Author : Jianyu Cheng
Publisher :
ISBN 13 :
Total Pages : 246 pages
Book Rating : 4.:/5 (126 download)

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Book Synopsis Seismic Performance Evaluation of Reinforced Masonry Wall Systems with Frame Modeling by : Jianyu Cheng

Download or read book Seismic Performance Evaluation of Reinforced Masonry Wall Systems with Frame Modeling written by Jianyu Cheng and published by . This book was released on 2021 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study is aimed to acquire a better understanding of the seismic behavior of reinforced masonry (RM) structures at a system level, and to develop frame models for simulating the nonlinear flexural and shear behaviors of these wall systems. To capture the nonlinear, in-plane, cyclic behavior of flexure-dominated RM walls, a rational modeling method along with suitable material models, using a fiber-section beam-column element idealization is presented. The modeling method accounts for the buckling and low-cycle fatigue of vertical reinforcing bars as well as plastic strain localization, which may develop in RM walls under severe seismic actions. The model has been validated by experimental data on fully grouted planar walls and T-walls. In addition, a rational and simple method to construct lateral force-vs.-lateral displacement backbone curves is also presented. The proposed method produces backbone curves that show a good agreement with experimental data from the quasi-static, cyclic, loading tests of walls with rectangular and T sections. There had been a lack of experimental data showing the ultimate displacement capacity of shear-dominated RM wall systems. To fill this data gap, a shake-table test program was carried out to investigate the displacement capacity of shear-dominated RM wall systems, and the influence of wall flanges and planar walls perpendicular to the direction of shaking (out-of-plane walls) on the seismic performance of a wall system. Two full-scale, single-story, fully grouted, RM wall specimens were tested to the verge of collapse. Each specimen had two T-walls as the seismic force resisting elements and a stiff roof diaphragm. The second specimen had six additional planar walls perpendicular to the direction of shaking. The two specimens reached maximum roof drift ratios of 17% and 13%, respectively, without collapsing. The high displacement capacities can be largely attributed to the presence of wall flanges and, for the second specimen, also the out-of-plane walls, which provided an alternative load path to carry the gravity load when the webs of the T-walls had been severely damaged. A computationally efficient beam-column model is proposed to simulate the nonlinear flexural and shear behaviors of reinforced masonry shear walls for time-history analysis. A three-field mixed formulation based on the Hu-Washizu variational principle is adopted. This mixed element is free of shear locking, and allows a wall to be modeled with one element. To capture the nonlinear behavior of a reinforced masonry wall, the axial and flexural responses are evaluated at each integration point along the element with a fiber-section model, while the shear response in each loading direction is represented by a macro material model. The model accounts for the influence of the axial load, wall aspect ratio, and the flange on the shear response of a wall. To consider axial-flexure-shear interaction, the shear model accounts for the axial stress resultant from the fiber-section model, and the compressive strength of masonry in the fiber-section model decreases when severe shear damage developed. The model has been calibrated and validated with extensive test data. It has been demonstrated that the model is able to reproduce the experimental results from quasi-static cyclic loading tests of single walls as well as shake-table tests of wall systems with good accuracy.

Evaluation of Earthquake Damaged Concrete and Masonry Wall Buildings

Author : Federal Emergency Agency
Publisher : FEMA
ISBN 13 :
Total Pages : 274 pages
Book Rating : 4./5 ( download)

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Book Synopsis Evaluation of Earthquake Damaged Concrete and Masonry Wall Buildings by : Federal Emergency Agency

Download or read book Evaluation of Earthquake Damaged Concrete and Masonry Wall Buildings written by Federal Emergency Agency and published by FEMA. This book was released on 2013-04-02 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following the two damaging California earthquakes in 1989 (Loma Prieta) and 1994 (Northridge), many concrete wall and masonry wall buildings were repaired using federal disaster assistance funding. The repairs were based on inconsistent criteria, giving rise to controversy regarding criteria for the repair of cracked concrete and masonry wall buildings. To help resolve this controversy, the Federal Emergency Management Agency (FEMA) initiated a project on evaluation and repair of earthquake damaged concrete and masonry wall buildings in 1996. The ATC-43 project addresses the investigation and evaluation of earthquake damage and discusses policy issues related to the repair and upgrade of earthquake damaged buildings. The project deals with buildings whose primary lateral-force-resisting systems consist of concrete or masonry bearing walls with flexible or rigid diaphragms, or whose vertical-load-bearing systems consist of concrete or steel frames with concrete or masonry infill panels. The intended audience is design engineers, building owners, building regulatory officials, and government agencies. The project results are reported in three documents. The FEMA 306 report, Evaluation of Earthquake Damaged Concrete and Masonry Wall Buildings, Basic Procedures Manual, provides guidance on evaluating damage and analyzing future performance. Included in the document are component damage classification guides, and test and inspection guides. FEMA 307, Evaluation of Earthquake Damaged Concrete and Masonry Wall Buildings, Technical Resources, contains supplemental information including results from a theoretical analysis of the effects of prior damage on single-degree-of-freedom mathematical models, additional background information on the component guides, and an example of the application of the basic procedures. FEMA 308, The Repair of Earthquake Damaged Concrete and Masonry Wall Buildings, discusses the policy issues pertaining to the repair of earthquake damaged buildings and illustrates how the procedures developed for the project can be used to provide a technically sound basis for policy decisions. It also provides guidance for the repair of damaged components.

Evaluation of Earthquake Damaged Concrete and Masonry Wall Buildings

Author :
Publisher :
ISBN 13 :
Total Pages : 270 pages
Book Rating : 4.3/5 ( download)

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Book Synopsis Evaluation of Earthquake Damaged Concrete and Masonry Wall Buildings by :

Download or read book Evaluation of Earthquake Damaged Concrete and Masonry Wall Buildings written by and published by . This book was released on 1999 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Seismic Vulnerability Assessment of Civil Engineering Structures at Multiple Scales

Author : Tiago Miguel Ferreira
Publisher : Woodhead Publishing
ISBN 13 : 0128240725
Total Pages : 396 pages
Book Rating : 4.1/5 (282 download)

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Book Synopsis Seismic Vulnerability Assessment of Civil Engineering Structures at Multiple Scales by : Tiago Miguel Ferreira

Download or read book Seismic Vulnerability Assessment of Civil Engineering Structures at Multiple Scales written by Tiago Miguel Ferreira and published by Woodhead Publishing. This book was released on 2021-12-02 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seismic Vulnerability Assessment of Civil Engineering Structures at Multiple Scales: From Single Buildings to Large-Scale Assessment provides an integrated, multiscale platform for fundamental and applied studies on the seismic vulnerability assessment of civil engineering structures, including buildings with different materials and building typologies. The book shows how various outputs obtained from different scales and layers of assessment (from building scale to the urban area) can be used to outline and implement effective risk mitigation, response and recovery strategies. In addition, it highlights how significant advances in earthquake engineering research have been achieved with the rise of new technologies and techniques. The wide variety of construction and structural systems associated with the complex behavior of their materials significantly limits the application of current codes and building standards to the existing building stock, hence this book is a welcomed guide on new construction standards and practices. Provides the theoretical backgrounds on the most advanced seismic vulnerability assessment approaches at different scales and for most common building typologies Covers the most common building typologies and the materials they are made from, such as concrete, masonry, steel, timber and raw earth Presents practical guidelines on how the outputs coming from such approaches can be used to outline effective risk mitigation and emergency planning strategies

Seismic Performance of Reinforced Masonry Shear Walls with Different Masonry Boundary Element Configurations

Author : Layane Hamzeh
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)

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Book Synopsis Seismic Performance of Reinforced Masonry Shear Walls with Different Masonry Boundary Element Configurations by : Layane Hamzeh

Download or read book Seismic Performance of Reinforced Masonry Shear Walls with Different Masonry Boundary Element Configurations written by Layane Hamzeh and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reinforced masonry (RM) shear walls are commonly used as a seismic force-resisting system (SFRS) in low and mid-rise buildings. Considerable progress has been made on the seismic performance of reinforced masonry shear walls with masonry boundary elements (RMSW+BEs). The integration of masonry boundary elements at the wall end zones of RM shear walls showed an enhancement in the lateral performance and curvature ductility compared to that of rectangular RM shear walls. The addition of masonry boundary elements increases the stability of the compression zone and preserves the flexural strength of the wall. This further increases the ductility of the walls, which in turn, increases the ductility modification factor of the wall that reduces the earthquake design load and thus achieves more economical masonry buildings. The research work outlined herein contributes to the understanding of the seismic behaviour and enhance the overall structural performance and competitiveness of RMSW+BEs. The main objective of this research study is to investigate the seismic behaviour of RMSW+BEs, highlight the ability of boundary elements to enhance the seismic performance of reinforced masonry buildings with RMSW+BEs, and hence, provide the necessary data to support the recent codification of this system in masonry design codes (TMS 402/602 and CSA S304). In this study, seventy full-scale fully grouted flexure dominated reinforced masonry shear walls with C-shaped boundary elements are numerically modelled under reversed cyclic quasi-static lateral loading and constant axial load. The key design detailing parameters used to investigate the seismic performance of the studied walls are the type of reinforcement (steel and GFRP), the boundary element length, and vertical reinforcement ratio in the boundary element, transverse hoop spacing, aspect ratio, and axial stress. The overall performance of each wall is examined in terms of hysteretic response, strength capacity, level of deformation, stiffness degradation, effective stiffness, and response modification factor. Validated and calibrated macro-modelling approaches were developed and utilized to simulate the nonlinear in-plane response of the RMSW+BEs. The obtained results demonstrated that decreasing the transverse hoop spacing in the masonry boundary element enhanced the wall's lateral load and displacement, indicating the effectiveness of confining the masonry boundary element core in delaying failure. Besides, increasing the masonry boundary element's length and vertical reinforcement ratio in the boundary element resulted in a significant increase in the lateral strength and displacement of the walls. Moreover, higher ductility related modification factor, Rd, values were suggested for steel-reinforced walls that could reduce the seismic demand on masonry buildings. The value Rd =3 for ductile walls specified by the Canadian standard CSA S304 (2014) seems to be conservative if adopted for this wall type. In addition, fragility curves at different damage states were developed according to the FEMA P-58 methodology, which can be adopted in future performance-based seismic design approaches. Furthermore, this study analyzed the experimental results of previously tested forty-three fully grouted flexure-dominated rectangular RMSWs under quasi-static cyclic loading that are available in the literature. An equation for the modified section reduction factor for the effective stiffness for both the Canadian and the American masonry standards was proposed using linear regression, taking into consideration the effect of axial stress, vertical and horizontal reinforcement ratios. The force-based design parameters in terms of seismic force response modification factor and deflection amplification factor were assessed, and refined values were suggested to be implemented in future design codes. The numerical and analytical findings in this research are expected to facilitate the practical implementation of RM shear walls with masonry boundary elements as a practical and competitive SFRS in the future masonry design standards.

Seismic Fragility Assessment for Buildings due to Earthquake Excitation

Author : FADZLI MOHAMED NAZRI
Publisher : Springer
ISBN 13 : 981107125X
Total Pages : 121 pages
Book Rating : 4.8/5 (11 download)

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Book Synopsis Seismic Fragility Assessment for Buildings due to Earthquake Excitation by : FADZLI MOHAMED NAZRI

Download or read book Seismic Fragility Assessment for Buildings due to Earthquake Excitation written by FADZLI MOHAMED NAZRI and published by Springer. This book was released on 2017-11-29 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a simplified approach to earthquake engineering by developing the fragility curve for regular and irregular moment-resisting frames based on different types of structural material, height, and ground motion records. It examines six sets of concrete and steel frames, which vary in terms of their height (3-, 6- and 9-storey) and include regular and irregular frames. Each structure frame was designed based on Eurocode 2 and 3 with the aid of Eurocode 8 for earthquake loading. The SAP2000 software was used as the main tool for the pushover analysis and incremental dynamic analysis. Readers are first provided with background information on the development of nonlinear analysis in earthquake engineering. Subsequently, each chapter begins with a detailed explanation of the collapse of the structures and the application in nonlinear analysis. As such, the book will greatly benefit students from both public and private institutions of higher, particularly those who are dealing with the subject of earthquake engineering for the first time. It also offers a valuable guide for Civil Engineering practitioners and researchers who have an interest in structural and earthquake engineering.

Fragility Assessment of High-rise Reinforced Concrete Buildings

Author : Hezha Sadraddin
Publisher :
ISBN 13 :
Total Pages : 147 pages
Book Rating : 4.:/5 (919 download)

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Book Synopsis Fragility Assessment of High-rise Reinforced Concrete Buildings by : Hezha Sadraddin

Download or read book Fragility Assessment of High-rise Reinforced Concrete Buildings written by Hezha Sadraddin and published by . This book was released on 2015 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research presents a probabilistic seismic responses analysis of highrise reinforced concrete buildings using fragility assessment method. Three RC buildings, having the same plan dimension and height (12 story each) but different in structural configurations, were designed and their seismic responses were compared. First building is a Moment Resisting Frame, second is a MRF with exterior shear walls, and the third building consists most shear walls. Buildings were designed for high seismic activity zone using the Equivalent Lateral Force for seismic loading calculation. Sixteen real ground motion pairs were selected and scaled, then applied orthogonally to the buildings to perform the Incremental Dynamic Analysis. Fragility curves were developed based on the IDA results for the three limit states including slight damage, moderate damage, and collapse to show the probabilistic comparison of seismic responses among the three buildings in both x and y-directions. It was observed from the fragility assessment results that generally shear walls improve buildings seismic performance. However shear wall configuration also affects the seismic performance which needs further study.

Earthquake-resistant Design Of Masonry Buildings

Author : Miha Tomazevic
Publisher : World Scientific
ISBN 13 : 1783262524
Total Pages : 281 pages
Book Rating : 4.7/5 (832 download)

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Book Synopsis Earthquake-resistant Design Of Masonry Buildings by : Miha Tomazevic

Download or read book Earthquake-resistant Design Of Masonry Buildings written by Miha Tomazevic and published by World Scientific. This book was released on 1999-07-05 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last few decades, a considerable amount of experimental and analytical research on the seismic behaviour of masonry walls and buildings has been carried out. The investigations resulted in the development of methods for seismic analysis and design, as well as new technologies and construction systems. After many centuries of traditional use and decades of allowable stress design, clear concepts for limit state verification of masonry buildings under earthquake loading have recently been introduced in codes of practice.Although this book is not a review of the state-of-the-art of masonry structures in earthquake zones, an attempt has been made to balance the discussion on recent code requirements, state-of-the-art methods of earthquake-resistant design and the author's research work, in order to render the book useful for a broader application in design practice. An attempt has also been made to present, in a condensed but easy to understand way, all the information needed for earthquake-resistant design of masonry buildings constructed using traditional systems. The basic concepts of limit state verification are presented and equations for seismic resistance verification of masonry walls of all types of construction, (unreinforced, confined and reinforced) as well as masonry-infilled reinforced concrete frames, are addressed. A method for seismic resistance verification, compatible with recent code requirements, is also discussed. In all cases, experimental results are used to explain the proposed methods and equations.An important part of this book is dedicated to the discussion of the problems of repair, retrofit and rehabilitation of existing masonry buildings, including historical structures in urban centres. Methods of strengthening masonry walls as well as improving the structural integrity of existing buildings are described in detail. Wherever possible, experimental evidence regarding the effectiveness of the proposed strengthening methods is given.

An Introduction to Seismic Building Shear Walls

Author : J. Paul Guyer, P.E., R.A.
Publisher : Guyer Partners
ISBN 13 :
Total Pages : 64 pages
Book Rating : 4./5 ( download)

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Book Synopsis An Introduction to Seismic Building Shear Walls by : J. Paul Guyer, P.E., R.A.

Download or read book An Introduction to Seismic Building Shear Walls written by J. Paul Guyer, P.E., R.A. and published by Guyer Partners. This book was released on 2018-02-04 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introductory technical guidance for civil and structural engineers interested in design of buildings to resist seismic forces. Here is what is discussed: 1. INTRODUCTION 2 DESIGN FORCES 3. WALL COMPONENTS 4. IN-PLANE EFFECTS 5. OUT-OF-PLANE EFFECTS 6. CAST-IN-PLACE CONCRETE SHEAR WALLS 7. MASONRY SHEAR WALLS 8. WOOD STUD SHEAR WALLS 9. STEEL STUD SHEAR WALLS.

Seismic Probabilistic Fragility Assessment of Reinforced Concrete Shear Wall Structures in Nuclear Power Plants

Author : Sammiuddin Quadri Syed
Publisher :
ISBN 13 :
Total Pages : 169 pages
Book Rating : 4.:/5 (874 download)

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Book Synopsis Seismic Probabilistic Fragility Assessment of Reinforced Concrete Shear Wall Structures in Nuclear Power Plants by : Sammiuddin Quadri Syed

Download or read book Seismic Probabilistic Fragility Assessment of Reinforced Concrete Shear Wall Structures in Nuclear Power Plants written by Sammiuddin Quadri Syed and published by . This book was released on 2013 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Masonry Construction in Active Seismic Regions

Author : Rajesh Rupakhety
Publisher : Woodhead Publishing
ISBN 13 : 0128231963
Total Pages : 482 pages
Book Rating : 4.1/5 (282 download)

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Book Synopsis Masonry Construction in Active Seismic Regions by : Rajesh Rupakhety

Download or read book Masonry Construction in Active Seismic Regions written by Rajesh Rupakhety and published by Woodhead Publishing. This book was released on 2021-05-12 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: During earthquakes, masonry buildings are the most affected, and consequently, damage to these buildings leads to massive loss of life and property. Masonry buildings comprise probably the greatest share of overall housing stock, and in turn, understanding their performance during earthquakes is a pivotal problem in seismic regions. Masonry Construction in Active Seismic Regions presents details on the kinds of masonry building found in seismic regions of the world. The title describes interventions, such as retrofitted solutions, dynamic identification, and improved construction after earthquakes, that are equally applicable to regions of moderate and high seismicity. The book covers representative masonry buildings from active seismic regions, the material properties of masonry construction, numerical modelling techniques and computational advances, seismic performance of non-engineered masonry buildings, resilience in typical construction, retrofitting, and the cultural values and structural characterization of heritage masonry buildings in active seismic regions. This book is unique in its global and systematic coverage of masonry construction in seismic regions. Identifies the material properties of masonry construction from a seismic perspective Covers representative masonry buildings from active seismic regions, providing a benchmark to understand existing building stocks Provides numerical modelling techniques and reviews computational advances, including a large test database Details the seismic performance of non-engineered masonry buildings, as well as the cultural values and structural characterisation of heritage masonry constructions Analyses typical or vernacular constructions which have earthquake resilient features, such as Dhajji-Dewari, Borbone, Pombalino, and Himis

Seismic Fragility Analysis of Reinforced Concrete Shear Wall Buildings in Canada

Author : Yasamin Rafie Nazari
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (129 download)

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Book Synopsis Seismic Fragility Analysis of Reinforced Concrete Shear Wall Buildings in Canada by : Yasamin Rafie Nazari

Download or read book Seismic Fragility Analysis of Reinforced Concrete Shear Wall Buildings in Canada written by Yasamin Rafie Nazari and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Damage observed after previous earthquakes indicates that a large number of existing buildings are vulnerable to seismic hazard. This research intends to assess seismic vulnerability of regular and irregular shear wall buildings in Canada, having different heights and different levels of seismic design and detailing. As seismic hazard is a probabilistic event, a probabilistic methodology has been adopted to assess the seismic vulnerability of the shear wall buildings. The proposed research encompasses a comprehensive fragility analysis for seismic vulnerability of shear wall buildings in Canada. The first phase of the investigation involves shear wall buildings with different heights (hence different structural periods), designed based on the 2010 National Building Code of Canada. The second phase involves shear wall buildings designed prior to 1975, representing pre-modern seismic code era. The third phase involves the evaluation of pre-1975 shear wall buildings with irregularities. 3-Dimensional simulations of the buildings were constructed by defining nonlinear modelling for shear wall and frame elements. These models were subjected to dynamic time history analyses conducted using Perform 3D software. Two sets of twenty earthquake records, compatible with western and eastern Canadian seismicity, were selected for this purpose. Spectral acceleration and peak ground acceleration were chosen as seismic intensity parameters and the first storey drift was selected as the engineering demand parameter which was further refined for irregular cases. The earthquake records were scaled to capture the structural behaviour under different levels of seismic excitations known as Incremental Dynamic Analysis. The resulting IDA curves were used as the input for seismic fragility analysis. Fragility curves were derived as probabilistic tools to assess seismic vulnerability of the buildings. These curves depict probability of exceeding immediate occupancy, life safety and collapse prevention limit states under different levels of seismic intensity.

Displacement-based Seismic Design of Structures

Author : M. J. N. Priestley
Publisher : Iuss Press
ISBN 13 :
Total Pages : 750 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Displacement-based Seismic Design of Structures by : M. J. N. Priestley

Download or read book Displacement-based Seismic Design of Structures written by M. J. N. Priestley and published by Iuss Press. This book was released on 2007 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt: Displacement-Based Seismic Design of Structures is a book primarily directed towards practicing structural designers who are interested in applying performance-based concepts to seismic design. Since much of the material presented in the book has not been published elsewhere, it will also be of considerable interest to researchers, and to graduate and upper-level undergraduate students of earthquake engineering who wish to develop a deeper understanding of how design can be used to control seismic response. The design philosophy is based on determination of the optimum structural strength to achieve a given performance limit state, related to a defined level of damage, under a specified level of seismic intensity. Emphasis is also placed on how this strength is distributed through the structure. This takes two forms: methods of structural analysis and capacity design. It is shown that equilibrium considerations frequently lead to a more advantageous distribution of strength than that resulting from stiffness considerations. Capacity design considerations have been re-examined, and new and more realistic design approaches are presented to insure against undesirable modes of inelastic deformation. The book considers a wide range of structural types, including separate chapters on frame buildings, wall buildings, dual wall/frame buildings, masonry buildings, timber structures, bridges, structures with isolation or added damping devices, and wharves. These are preceded by introductory chapters discussing conceptual problems with current force-based design, seismic input for displacement-based design, fundamentals of direct displacement-based design, and analytical tools appropriate for displacement-based design. The final two chapters adapt the principles of displacement-based seismic design to assessment of existing structures, and present the previously developed design information in the form of a draft building code. The text is illustrated by copious worked design examples (39 in all), and analysis aids are provided in the form of a CD containing three computer programs covering moment-curvature analysis (Cumbia), linear-element-based inelastic time-history analysis (Ruaumoko), and a general fibre-element dynamic analysis program (SeismoStruct). The design procedure developed in this book is based on a secant-stiffness (rather than initial stiffness) representation of structural response, using a level of damping equivalent to the combined effects of elastic and hysteretic damping. The approach has been fully verified by extensive inelastic time history analyses, which are extensively reported in the text. The design method is extremely simple to apply, and very successful in providing dependable and predictable seismic response. Authors Bios M.J.N.Priestley Nigel Priestley is Professor Emeritus of the University of California San Diego, and co-Director of the Centre of Research and Graduate Studies in Earthquake Engineering and Engineering Seismology (ROSE School), Istituto Universitario di Studi Superiori (IUSS), Pavia, Italy. He has published more than 450 papers, mainly on earthquake engineering, and received numerous awards for his research. He holds honorary doctorates from ETH, Zurich, and Cujo, Argentina. He is co-author of two previous seismic design books “Seismic Design of Concrete and Masonry Buildings” and “Seismic Design and Retrofit of Bridges”, that are considered standard texts on the subjects. G.M.Calvi Michele Calvi is Professor of the University of Pavia and Director of the Centre of Research and Graduate Studies in Earthquake Engineering and Engineering Seismology (ROSE School), Istituto Universitario di Studi Superiori (IUSS) of Pavia. He has published more than 200 papers and is co-author of the book “Seismic Design and Retrofit of Bridges”, that is considered a standard text on the subject, has been involved in important construction projects worldwide, such as the Rion Bridge in Greece and the upgrading of the Bolu Viaduct in Turkey, and is coordinating several international research projects. M.J.Kowalsky Mervyn Kowalsky is Associate Professor of Structural Engineering in the Department of Civil, Construction, and Environmental Engineering at North Carolina State University and a member of the faculty of the ROSE School. His research, which has largely focused on the seismic behaviour of structures, has been supported by the National Science Foundation, the North Carolina and Alaska Departments of Transportation, and several industrial organizations. He is a registered Professional Engineer in North Carolina and an active member of several national and international committees on Performance-Based Seismic Design.

Handbook of Seismic Risk Analysis and Management of Civil Infrastructure Systems

Author : S Tesfamariam
Publisher : Elsevier
ISBN 13 : 0857098985
Total Pages : 920 pages
Book Rating : 4.8/5 (57 download)

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Book Synopsis Handbook of Seismic Risk Analysis and Management of Civil Infrastructure Systems by : S Tesfamariam

Download or read book Handbook of Seismic Risk Analysis and Management of Civil Infrastructure Systems written by S Tesfamariam and published by Elsevier. This book was released on 2013-04-30 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthquakes represent a major risk to buildings, bridges and other civil infrastructure systems, causing catastrophic loss to modern society. Handbook of seismic risk analysis and management of civil infrastructure systems reviews the state of the art in the seismic risk analysis and management of civil infrastructure systems. Part one reviews research in the quantification of uncertainties in ground motion and seismic hazard assessment. Part twi discusses methodologies in seismic risk analysis and management, whilst parts three and four cover the application of seismic risk assessment to buildings, bridges, pipelines and other civil infrastructure systems. Part five also discusses methods for quantifying dependency between different infrastructure systems. The final part of the book considers ways of assessing financial and other losses from earthquake damage as well as setting insurance rates. Handbook of seismic risk analysis and management of civil infrastructure systems is an invaluable guide for professionals requiring understanding of the impact of earthquakes on buildings and lifelines, and the seismic risk assessment and management of buildings, bridges and transportation. It also provides a comprehensive overview of seismic risk analysis for researchers and engineers within these fields. This important handbook reviews the wealth of recent research in the area of seismic hazard analysis in modern earthquake design code provisions and practices Examines research into the analysis of ground motion and seismic hazard assessment, seismic risk hazard methodologies Addresses the assessment of seismic risks to buildings, bridges, water supply systems and other aspects of civil infrastructure

Collapse Analysis of Masonry Structures Under Earthquake Actions

Author : Tammam Bakeer
Publisher : Tammam Bakeer
ISBN 13 : 3867801304
Total Pages : 266 pages
Book Rating : 4.8/5 (678 download)

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Book Synopsis Collapse Analysis of Masonry Structures Under Earthquake Actions by : Tammam Bakeer

Download or read book Collapse Analysis of Masonry Structures Under Earthquake Actions written by Tammam Bakeer and published by Tammam Bakeer. This book was released on 2009 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Evaluation of Limit Design for Earthquake-Resistant Masonry Walls

Author : Bradley Frederick
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (894 download)

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Book Synopsis Evaluation of Limit Design for Earthquake-Resistant Masonry Walls by : Bradley Frederick

Download or read book Evaluation of Limit Design for Earthquake-Resistant Masonry Walls written by Bradley Frederick and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A Limit Design methodology is presented and evaluated for the design of reinforced masonry walls subjected to in-plane seismic forces. The method was recently incorporated into the Building Code Requirements for Masonry Structures (TMS 402, 2013) as an alternative design option. Using the framework of conventional design methods, Limit Design applies concepts of displacement-based design to the controlling yield mechanism of a given wall configuration subjected to lateral seismic loading.Two design examples illustrate the application of Limit Design. The examples represent typical instances of building structures where the seismic force-resisting system consists of Special Reinforced Masonry Shear Walls as permitted in Minimum Design Loads for Buildings and Other Structures (ASCE/SEI 7, 2010). The selected examples involve configurations in which design decisions are not favorably addressed by the conventional design methods in TMS 402.The structures are analyzed and designed according to the Strength Design provisions of the TMS 402 (2013) code and the new Limit Design alternative. The design outcomes for both methods are compared and analyzed to illustrate the limitations of the Strength Design method and advantages of Limit Design.