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Seismic Performance Modeling And Failure Assessment Of Reinforced Concrete Shear Wall Buildings
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Book Synopsis Seismic Performance, Modeling, and Failure Assessment of Reinforced Concrete Shear Wall Buildings by : Zeynep Tuna
Download or read book Seismic Performance, Modeling, and Failure Assessment of Reinforced Concrete Shear Wall Buildings written by Zeynep Tuna and published by . This book was released on 2012 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reinforced concrete structural (shear) walls are commonly used as lateral load resisting systems in high seismic zones because they provide significant lateral strength, stiffness, and deformation capacity. Understanding the response and behavior of shear walls is essential to achieve more economical and reliable designs, especially as performance-based design approaches for new buildings have become more common. Results of a case study of 42-story RC dual system building, designed using code-prescriptive and two different performance-based design approaches, are presented to assess expected performance. Median values and dispersion of the response quantities are, in general, well-below acceptable limits and the overall behavior of the three building designs are expected to be quite similar. However, the ability to define shear failure and collapse proved difficult and provided motivation to conduct additional studies. For both design of new buildings and evaluation/rehabilitation of existing structural wall buildings, an accurate assessment of median (expected) and dispersion of wall shear strength and deformation capacity are needed. A wall test database (124 specimens) was assembled to investigate the influence of various parameters on wall shear strength and deformation capacity, and to recommend alternative relations for strength and deformation capacity depending on expected wall behavior. Test results indicated that ACI 318-11 underestimates the shear strength of the shear-controlled walls. Mean curvature ductility ratios were obtained as about 3 and 7 for shear- and flexure-controlled walls, respectively. The new relations will allow improved damage and failure assessment of buildings utilizing structural walls for lateral load resistance. Failure assessment of RC shear walls also was conducted for the 15-story Alto Rio building which collapsed in the 2010 Chile earthquake. Possible reasons for collapse were identified using post-earthquake observed damage, structural drawings, and nonlinear static and dynamic response analyses. Analysis results indicate that collapse was likely influenced by various factors, including compression failure at the web boundary of T-shaped walls on the east side of the building, large shear demands at the filled-in corridor walls at the first level, and tensile fracture and splice failures at the west side of the building. Nonlinear modeling and analysis of the four-story RC building that was tested on E-Defense shaking table (2010) was investigated to assess current modeling approaches and assumptions, and to identify issues that require additional study. Including concrete tension strength, stiffness degradation, and strength degradation significantly improved the correlation between the analytical and test results.
Book Synopsis Seismic Performance and Modeling of Reinforced Concrete and Post-Tensioned Precast Concrete Shear Walls by : Ahmet Can Tanyeri
Download or read book Seismic Performance and Modeling of Reinforced Concrete and Post-Tensioned Precast Concrete Shear Walls written by Ahmet Can Tanyeri and published by . This book was released on 2014 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Past earthquakes have shown examples of unsatisfactory performance of buildings using reinforced concrete structural walls as the primary lateral-force-resisting system. In the 1994 Northridge earthquake, examples can be found where walls possessed too much overstrength, leading to unintended failure of collectors and floor systems, including precast and post-tensioned construction. In the 2010 Maule Chile earthquake, many structural wall buildings sustained severe damage. Although Chilean design standards result in different reinforcement detailing than is common in U.S. walls, the failure patterns raise concerns about how well conventionally reinforced structural walls in U.S. buildings will perform during the next earthquake. Alternative wall design philosophies that offer more predictable response, with better damage control, should be investigated. After the Mw 8.8 Chile earthquake, the 15-story Alto Rio building in Concepción sustained failures near the base, overturned, and came to rest on its side. The collapse of the Alto Rio building was significant because it was designed using the Chilean Building Code NCh433. Of96, which requires the use of ACI 318-95 for design of reinforced concrete structural elements intended to resist design seismic forces. The failure of the Alto Rio building is significant for many reasons. It is the first modern shear wall building of its type to collapse by overturning during an earthquake. The building is studied using forensic data and structural models of the framing system subjected to earthquake shaking. The study identifies the likely failure mechanism and suggests areas for which design and detailing practices could be improved. The capabilities and shortcomings of the analyses to identify details of the failure mechanism are themselves important outcomes of the study. A second study explores the behavior of structural wall buildings using unbonded post-tensioned structural walls. Such walls offer the opportunity to better control yielding mechanisms and promote self-centering behavior. The study focuses on the measured responses of a full-scale, four-story building model tested on the E-Defense shaking table in Japan. The seismic force-resisting system of the test building comprised two post-tensioned (PT) precast frames in one direction and two unbonded PT precast walls in the other direction. The building was designed using the latest code requirements and design recommendations available both in Japan and the U.S., including the ACI ITG-5.2-09. The test building was subjected to several earthquake ground motions, ranging from serviceability level to near collapse. Analytical studies were carried out to test the capability of the structural models to replicate behaviors important to structural engineers, and to assess whether available analysis tools are sufficient to model dynamic behavior that results when a full-scale building is subjected to realistic earthquake ground shaking. Measured response data from such an outstanding test provides an opportunity to fully understand the response characteristics of PT walls and assess the ability of nonlinear analytical models to reproduce important global and local responses, including three-dimensional system interactions, both prior to and after loss of significant lateral strength. Moreover, this study to assess behavior and system interaction of PT walls leads to improvements of the current design ideas and performance expectations. The present study examines both the collapse of the Alto Rio building in Chile and the shaking table tests of the unbonded post-tensioned wall building in Japan. The collapse study suggests areas of improvement in current design and detailing practice. The shaking table study suggests an alternative approach to design of shear walls in buildings. Both studies demonstrate the use of modern structural analysis tools to interpret building responses to earthquake shaking. Taken together, the studies provide added confidence in earthquake simulation capabilities and demonstrate alternatives for designing earthquake-resistant buildings that use structural walls.
Book Synopsis Seismic Performance Assessment of Buildings: Implementation guide by :
Download or read book Seismic Performance Assessment of Buildings: Implementation guide written by and published by . This book was released on 2018 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance-Based Seismic Design of Concrete Structures and Infrastructures by : Plevris, Vagelis
Download or read book Performance-Based Seismic Design of Concrete Structures and Infrastructures written by Plevris, Vagelis and published by IGI Global. This book was released on 2017-02-14 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solid design and craftsmanship are a necessity for structures and infrastructures that must stand up to natural disasters on a regular basis. Continuous research developments in the engineering field are imperative for sustaining buildings against the threat of earthquakes and other natural disasters. Performance-Based Seismic Design of Concrete Structures and Infrastructures is an informative reference source on all the latest trends and emerging data associated with structural design. Highlighting key topics such as seismic assessments, shear wall structures, and infrastructure resilience, this is an ideal resource for all academicians, students, professionals, and researchers that are seeking new knowledge on the best methods and techniques for designing solid structural designs.
Book Synopsis Concrete Shear in Earthquake by : T.C.C. Hsu
Download or read book Concrete Shear in Earthquake written by T.C.C. Hsu and published by CRC Press. This book was released on 1992-01-15 with total page 535 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume consists of papers presented at the International Workshop on Concrete Shear in Earthquake, held at the University of Houston, Texas, USA, 13-16 January 1991.
Book Synopsis Seismic Performance of Concrete Buildings by : Liviu Crainic
Download or read book Seismic Performance of Concrete Buildings written by Liviu Crainic and published by CRC Press. This book was released on 2012-12-10 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines and presents essential aspects of the behavior, analysis, design and detailing of reinforced concrete buildings subjected to strong seismic activity. Seismic design is an extremely complex problem that has seen spectacular development in the last decades. The present volume tries to show how the principles and methods of earthquake engineering can be applied to seismic analysis and design of reinforced concrete buildings. The book starts with an up-to-date presentation of fundamental aspects of reinforced concrete behavior quantified through constitutive laws for monotonic and hysteretic loading. Basic concepts of post-elastic analysis like plastic hinge, plastic length, fiber models, and stable and unstable hysteretic behaviour are, accordingly, defined and commented upon. For a deeper understanding of seismic design philosophy and of static and dynamic post-elastic analysis, seismic behavior of different types of reinforced concrete structures (frames, walls) is examined in detail. Next, up-to-date methods for analysis and design are presented. The powerful concept of structural system is defined and systematically used to explain the response to seismic activity, as well as the procedures for analysis and detailing of common building structures. Several case studies are presented. The book is not code-oriented. The structural design codes are subject to constant reevaluation and updating. Rather than presenting code provisions, this book offers a coherent system of notions, concepts and methods, which facilitate understanding and application of any design code. The content of this book is based mainly on the authors’ personal experience which is a combination of their teaching and research activity as well as their work in the private sector as structural designers. The work will serve to help students and researchers, as well as structural designers to better understand the fundamental aspects of behavior and analysis of reinforced concrete structures and accordingly to gain knowledge that will ensure a sound design of buildings.
Book Synopsis Modeling of Inelastic Behavior of RC Structures Under Seismic Loads by : P. Benson Shing
Download or read book Modeling of Inelastic Behavior of RC Structures Under Seismic Loads written by P. Benson Shing and published by ASCE Publications. This book was released on 2001-01-01 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the U.S.?Japan Seminar on Post-Peak Behavior of Reinforced Concrete Structures Subjected to Seismic Loads: Recent Advances and Challenges on Analysis and Design, held in Tokyo and Lake Yamanaka, Japan, October 25-29, 1999. Sponsored by the National Science Foundation, U.S.A.; Japan Society for the Promotion of Science; Japan Concrete Institute. This collection presents the latest ideas and findings on the inelastic behavior of reinforced concrete (RC) structures from the analysis and design standpoints. These papers discuss state-of-the-art concrete material models and analysis methods that can be used to simulate and understand the inelastic behavior of RC structures, as well as design issues that can improve the seismic performance of these structures. Topics include modeling of concrete behavior; modeling of RC structures (finite element approach and macro-element approach); and experimental studies, analysis, and design issues.
Book Synopsis Seismic Performance Analysis of Mid-Rise Concrete Shear Wall Buildings Reinforced with Superelastic Shape Memory Alloys by : Marina Maciel
Download or read book Seismic Performance Analysis of Mid-Rise Concrete Shear Wall Buildings Reinforced with Superelastic Shape Memory Alloys written by Marina Maciel and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigates the seismic performance of hybrid Shape Memory Alloy (SMA)-steel reinforced concrete shear walls containing Nickel-Titanium (Ni-Ti) superelastic SMA as alternative reinforcement in the plastic hinge region. This wall system permits self-centering with high levels of energy dissipation and significant reduction of permanent deformations. Conventional steel-reinforced concrete shear walls were designed for a prototype 10-storey office building, assuming seismic design scenarios in eastern and western Canada. Equivalent hybrid SMA-steel reinforced concrete shear walls were defined following the designed cross-sections of the conventional walls. Full-scale, 2-D finite element models of the walls were developed and subjected to nonlinear, static and time-history analyses, employing historical and simulated ground motion records for the latter. The numerical results confirmed the superior self-centering capacity of the hybrid SMA-steel reinforced walls, showing potential to optimize the seismic performance of reinforced concrete buildings, particularly in high seismic zones, by controlling residual deformations and reducing damage.
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:
Book Synopsis Seismic Hazards and Risk by : T. G. Sitharam
Download or read book Seismic Hazards and Risk written by T. G. Sitharam and published by Springer Nature. This book was released on 2021-03-22 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents select papers presented at the 7th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. The papers discuss advances in the fields of soil dynamics and geotechnical earthquake engineering. Some of the themes include seismic risk assessment, engineering seismology, wave propagation, remote sensing applications for geohazards,engineering vibrations, etc. A strong emphasis is placed on connecting academic research and field practice, with many examples, case studies, best practices, and discussions on performance based design. This volume will be of interest to researchers and practicing engineers alike.
Book Synopsis Seismic Performance Evaluation of Reinforced Concrete Framed Buildings with Shear Walls by : Injam Siva Parvathi
Download or read book Seismic Performance Evaluation of Reinforced Concrete Framed Buildings with Shear Walls written by Injam Siva Parvathi and published by . This book was released on 2020-03-17 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Performance of Reinforced Concrete Wall Structures Under High Axial Load with Particular Application to Low-To Moderate Seismic Regions by : Sze-Man Wong
Download or read book Seismic Performance of Reinforced Concrete Wall Structures Under High Axial Load with Particular Application to Low-To Moderate Seismic Regions written by Sze-Man Wong and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Seismic Performance of Reinforced Concrete Wall Structures Under High Axial Load With Particular Application to Low-to Moderate Seismic Regions" by Sze-man, Wong, 黃思敏, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled Seismic Performance of Reinforced Concrete Wall Structures under High Axial Load with Particular Application to Low-to-Moderate Seismic Regions Submitted by Wong Sze Man For the degree of Master of Philosophy at The University of Hong Kong in December 2005 Hong Kong is a densely-populated city that is located in a region classified as having low-to-moderate seismicity. Previous studies suggest that it is not unlikely for Hong Kong to be subject to a far-field, large magnitude earthquake. Considering the potential economic and property loss to the territory, proper assessments of buildings in Hong Kong's urban area are urgently required. Accordingly, the aim of this study is to evaluate the seismic performance of reinforced concrete (RC) shear walls, a common structural element adopted in the construction of medium-rise residential buildings in Hong Kong. This thesis has identified axial load ratio (ALR) as an indispensable parameter for consideration in seismic performance evaluation. The ALRs in the wall elements of the medium-rise residential buildings were investigated. It was found that the ratios ranged up to 0.3 and 0.45 for shear-wall and core-wall buildings respectively. Effective yield curvature was extensively analyzed using a FORTRAN program. An empirical model, which is valid to the practical range of ALRs concluded, is proposed to provide quick estimations to the effective yield curvature that are useful for assessment purposes when combined with the Yield Point Spectra (YPS). The behaviour of RC walls fabricated in accordance with common construction practice in Hong Kong was critically examined experimentally. In addition to conventional instrumentations, the optical Digital Speckle Correlation Method (DSCM) was adopted in the study. The effects of ALR and confinement on failure mode, ductility capacity, strength degradation, and axial load capacity were investigated. It was found that the effect of ALR should not be neglected in a seismic assessment. In addition, the performance of the specimens before and after the retrofitting measures was also compared, and advantages of using the DSCM were identified. Analysis of the research findings prompts the need for a revision of the performance level criteria that cater for high ALR scenarios. Based on the revised criteria, a case study was conducted, which compared the seismic capacity and demand on YPS. Displacement ductility demands were negligible when ALRs were low, but high ALR cases were accompanied by an Immediate Occupancy or Life Safety performance level. (349 words) DOI: 10.5353/th_b3473953 Subjects: Concrete walls - Earthquake effects Shear walls - Earthquake effects Concrete walls - Testing Shear walls - Testing
Book Synopsis Seismic Performance Assessment of Buildings by : Applied Technology Council
Download or read book Seismic Performance Assessment of Buildings written by Applied Technology Council and published by . This book was released on 2012 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design of Reinforced Concrete Buildings for Seismic Performance by : Mark Aschheim
Download or read book Design of Reinforced Concrete Buildings for Seismic Performance written by Mark Aschheim and published by CRC Press. This book was released on 2019-04-05 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: The costs of inadequate earthquake engineering are huge, especially for reinforced concrete buildings. This book presents the principles of earthquake-resistant structural engineering, and uses the latest tools and techniques to give practical design guidance to address single or multiple seismic performance levels. It presents an elegant, simple and theoretically coherent design framework. Required strength is determined on the basis of an estimated yield displacement and desired limits of system ductility and drift demands. A simple deterministic approach is presented along with its elaboration into a probabilistic treatment that allows for design to limit annual probabilities of failure. The design method allows the seismic force resisting system to be designed on the basis of elastic analysis results, while nonlinear analysis is used for performance verification. Detailing requirements of ACI 318 and Eurocode 8 are presented. Students will benefit from the coverage of seismology, structural dynamics, reinforced concrete, and capacity design approaches, which allows the book to be used as a foundation text in earthquake engineering.
Book Synopsis Seismic Performance Evaluation of Reinforced Concrete Shear Wall Seismic Force Resisting Systems by : Shahaboddin Mousavi Azad Kasmaei
Download or read book Seismic Performance Evaluation of Reinforced Concrete Shear Wall Seismic Force Resisting Systems written by Shahaboddin Mousavi Azad Kasmaei and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building codes in various jurisdictions including Canada are moving towards performance-based design approaches where a structure is designed not only to have adequate strength, but also for the required performance attributes, such as, adequate deformability. From that point of view, performance assessment of structures in the design phase plays an important role in the implementation of the above concept. The focus of this article is to study the seismic performance and torsional sensitivity of reinforced concrete shear wall buildings designed using the seismic provisions of the National Building Code of Canada (NBCC 2005) and the Canadian standard on reinforced concrete buildings (CSA-A23.3-04). The buildings considered here are of regular plan and the height is limited to what is permitted for the use of the Equivalent Static Load (ESL) method of the building code. A set of three reinforced concrete buildings of four, eight and sixteen storey heights are designed here. The buildings are assumed to be located in Vancouver and various levels of accidental mass eccentricity up to 10% as permitted in the ESL method, are considered. After the preliminary design of the buildings using the ESL method, dynamic elastic Response Spectrum Analysis "RSA" has been performed to compare the base shear and make appropriate refinement in the design as suggested in NBCC. The buildings are then analyzed using inelastic dynamic analysis with fifteen recorded accelerograms of past earthquakes. The earthquake records are selected such that the peak velocity to acceleration ratio of each record is compatible to the seismicity of Vancouver. The ground motion records are scaled to fit the design spectrum using two different methods, The performance parameters such as the demand to capacity ratios for storey drift, plastic rotation, and storey shear are extracted from the results of the inelastic dynamic analysis. The statistical quantities such as mean, standard deviation and the maximum values of the demand to capacity ratios are found to be well below the acceptable limits, while the storey shear, exceed the limit in all cases. It also is observed that none of the buildings are torsionally sensitive within the code specified range of eccentricity for which ESL method is applicable. The changes in the dynamic response due to the change in eccentricity are almost proportional within the range of eccentricity considered here. Another point to note here is that while results for the four and eight storey buildings are not very sensitive to the method of scaling of the ground motion records, for the sixteen storey building, it is not so.
Book Synopsis Modeling and Nonlinear Seismic Simulation of Shear Walls in Multistory Reinforced Concrete Buildings by : Carolina Magna-Verdugo
Download or read book Modeling and Nonlinear Seismic Simulation of Shear Walls in Multistory Reinforced Concrete Buildings written by Carolina Magna-Verdugo and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The seismic behavior of reinforced concrete shear walls in Chile generally demonstrated adequate performance as seen from the response of most Chilean multistory shear-wall reinforced concrete buildings after the 1985 and 2010 earthquakes. While shear walls are widely used in building construction, models for simulating the nonlinear response of shear walls have seen limited advances. The need to accurately model shear wall behavior is becoming more important as increased confidence in the seismic behavior of RC walls has led to more relaxed requirements for reinforcement and confinement of typical wall configurations. For example, walls built prior to the 1985 earthquake in Chile were based more on traditional practice and were not necessarily enforced by seismic codes. The majority of post-1985 construction was based on ACI-318 guidelines with relaxed provisions for the confinement of the walls. The changes in the structural configurations and reinforcement details of post-1985 shear-walls in Chile resulted in different behavior and observed damage compared to the pre-1985 walls. In this study, typical Chilean walls are modeled and analyzed so to evaluate the effectiveness of a wall macro-model developed to reproduce the observed behavior of those walls during the 2010 Chilean earthquake. Due to its simplicity and lower computational cost, a multi spring macro-model is used for the simulation. Since the modeling of an entire building presents numerous modeling and computational challenges, a 2D section of the building is modeled using OpenSEES. The calibration of the 2D section model is performed through comparison of the dynamic properties with a 3D elastic model of the entire building developed in SAP2000. The macro-model development includes recommendations for modeling shear behavior of selected structural walls. The research also provides guidelines for calibrating the spring properties of the macro-element as a function of the slenderness ratio of the wall, and the wall web reinforcement ratio. Findings from the study will be useful in advancing nonlinear simulation models for analysis of shear wall structures.
Book Synopsis Seismic Design of Reinforced Concrete Buildings by : Jack Moehle
Download or read book Seismic Design of Reinforced Concrete Buildings written by Jack Moehle and published by McGraw Hill Professional. This book was released on 2014-10-06 with total page 783 pages. Available in PDF, EPUB and Kindle. Book excerpt: Complete coverage of earthquake-resistant concrete building design Written by a renowned seismic engineering expert, this authoritative resource discusses the theory and practice for the design and evaluation of earthquakeresisting reinforced concrete buildings. The book addresses the behavior of reinforced concrete materials, components, and systems subjected to routine and extreme loads, with an emphasis on response to earthquake loading. Design methods, both at a basic level as required by current building codes and at an advanced level needed for special problems such as seismic performance assessment, are described. Data and models useful for analyzing reinforced concrete structures as well as numerous illustrations, tables, and equations are included in this detailed reference. Seismic Design of Reinforced Concrete Buildings covers: Seismic design and performance verification Steel reinforcement Concrete Confined concrete Axially loaded members Moment and axial force Shear in beams, columns, and walls Development and anchorage Beam-column connections Slab-column and slab-wall connections Seismic design overview Special moment frames Special structural walls Gravity framing Diaphragms and collectors Foundations
