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Analytical Modeling Of Reinforced Concrete Walls For Predicting Flexural And Coupled Shear Flexural Responses
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Book Synopsis Analytical Modeling of Reinforced Concrete Walls for Predicting Flexural and Coupled- Shear-flexural Responses by : Kutay Orakcal
Download or read book Analytical Modeling of Reinforced Concrete Walls for Predicting Flexural and Coupled- Shear-flexural Responses written by Kutay Orakcal and published by . This book was released on 2006 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical Modeling of Cyclic Shear by : Kristijan Imre Kolozvari
Download or read book Analytical Modeling of Cyclic Shear written by Kristijan Imre Kolozvari and published by . This book was released on 2013 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was conducted to develop a modeling approach that integrates flexure and shear interaction under cyclic loading conditions to obtain reliable predictions of inelastic responses of reinforced concrete (RC) structural walls. The proposed modeling approach incorporates cyclic RC panel constitutive behavior based on an interpretation of the fixed-strut-angle approach into a two-dimensional fiber-based macroscopic model. Coupling of axial and shear responses under cyclic loading is achieved at the fiber (panel) level, which further allows coupling of flexural and shear responses at the element level. The sensitivity of model results to various modeling parameters (e.g., material constitutive parameters and modeling parameters), wall configuration parameters (e.g., aspect ratio, boundary and web reinforcement ratios), and response parameters (levels of wall axial load and shear) was investigated to demonstrate the ability of the model to predict the behavior or RC walls for a broad range of conditions. The proposed analytical model was validated and calibrated against experimental results obtained from six large-scale, heavily instrumented, cantilever structural wall specimens characterized with different aspect ratios (1.5, 2.0 and 3.0), axial load levels (0.0025 A_g_f'_c, 0.07 A_g_f'_c and 0.10 A_g_f'_c) and wall shear stress levels (between approximately 4 and 8 [square root]"f'_c) psi) tested under combined constant axial load and reversed cyclic lateral loading applied at the top of the wall. Comparisons of experimental and analytical model results for moderately slender RC walls (aspect ratio 1.5 and 2.0) revealed that the model successfully captures experimentally observed interaction between nonlinear shear and flexural deformations under cyclic loading and predicts lateral strength and stiffness that is within 10% of experimentally measured values. In addition, the magnitudes and relative contributions of shear and flexural deformations along the wall height were predicted closely at low and moderate drift levels, whereas at drift levels larger than 2.0%, model results were within 25% of experimentally measured deformation components. As well, localized nonlinear responses such as vertical tensile and compressive strains and wall rotations at the wall base were well predicted by the model. The model results were less accurate for the slender (aspect ratio 3.0) RC wall specimen in terms of relative contributions of shear and flexural deformations and magnitudes of compressive strains. Demonstrated model sensitivity to parameters of the implemented RC panel behavior suggested the need for calibration of these parameters for reliable predictions of nonlinear wall behavior. Given the limited model calibration performed in this study, additional work is needed, particularly for slender RC walls where preliminary results were less accurate. Finally, the implementation of the model into a publicly available computational platform is required to enable more detailed system level studies and future model development.
Book Synopsis Experimental and Analytical Studies of Moderate Aspect Ratio Reinforced Concrete Structural Walls by : Thien Anh Tran
Download or read book Experimental and Analytical Studies of Moderate Aspect Ratio Reinforced Concrete Structural Walls written by Thien Anh Tran and published by . This book was released on 2012 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental and analytical investigations were conducted to provide insight into the nonlinear cyclic response of moderate aspect ratio reinforced concrete structural walls. Five large-scale cantilever structural wall specimens, subjected to combined constant axial load and reversed cyclic lateral loading, were designed, constructed, instrumented, and tested. The wall specimens were designed to yield in flexure prior to loss of lateral load capacity. Primary test variables included aspect ratio (1.5 and 2.0), axial load level (0.025Agf'c and 0.10Agf'c), and wall shear stress level. Test results showed that substantial loss of lateral load capacity was observed for a variety of reasons, such as diagonal tension, diagonal compression, sliding shear, concrete crushing, and buckling of vertical reinforcement. Test results also indicated that significant strength loss was impacted by wall aspect ratio, axial load level, and wall shear stress level. Although various failure modes were observed for five wall specimens, drift ratio at substantial loss of lateral load capacity was approximately 3.0% for all tests. The average contribution of nonlinear shear deformations to the top lateral displacement varied between approximately 20 and 50%, with lower values for the aspect ratio 2.0 walls. Modeling parameters recommended by ASCE 41-06 and FEMA 356, including effective flexural and shear stiffness values, deformation capacities, and residual strengths, are compared with the corresponding values derived from test results. Current modeling approaches, including both uncoupled (P-M and V independent) and coupled (interaction between P-M and V) models, were used to assess their ability to capture the measured responses for the moderate aspect ratio structural walls. The investigation indicates that both models overestimate lateral load capacity and lateral stiffness, but with notable differences. In general, results for the uncoupled models are less consistent with the test results, indicating that coupled models are needed to adequately capture the responses of moderate aspect ratio walls. The primary shortcoming of the coupled model was the lack of cyclic material models. The detailed response information obtained from the heavily instrumented walls tested in this study provide essential data to develop robust analytical models, including models that account for cyclic nonlinear shear-flexure interaction.
Book Synopsis Proceedings of the Canadian Society of Civil Engineering Annual Conference 2021 by : Scott Walbridge
Download or read book Proceedings of the Canadian Society of Civil Engineering Annual Conference 2021 written by Scott Walbridge and published by Springer Nature. This book was released on 2022-06-16 with total page 657 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises the proceedings of the Annual Conference of the Canadian Society of Civil Engineering 2021. The contents of this volume focus on specialty conferences in construction, environmental, hydrotechnical, materials, structures, transportation engineering, etc. This volume will prove a valuable resource for those in academia and industry.
Book Synopsis Earthquake Engineering and Structural Dynamics in Memory of Ragnar Sigbjörnsson by : Rajesh Rupakhety
Download or read book Earthquake Engineering and Structural Dynamics in Memory of Ragnar Sigbjörnsson written by Rajesh Rupakhety and published by Springer. This book was released on 2017-12-07 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents methods and results that cover and extend beyond the state-of-the-art in structural dynamics and earthquake engineering. Most of the chapters are based on the keynote lectures at the International Conference in Earthquake Engineering and Structural Dynamics (ICESD), held in Reykjavik, Iceland, on June 12-14, 2017. The conference is being organised in memory of late Professor Ragnar Sigbjörnsson, who was an influential teacher and one of the leading researchers in the fields of structural mechanics, random fields, engineering seismology and earthquake engineering. Professor Sigbjörnsson had a close research collaboration with the Norwegian Institute of Science and Technology (NTNU), where his research was mainly focused in dynamics of marine and offshore structures. His research in Iceland was mainly focused on engineering seismology and earthquake engineering. The keynote-lecture based chapters are contributed by leading experts in these fields of research and showcase not only the historical perspective but also the most recent developments as well as a glimpse into the future. These chapters showcase a synergy of the fields of structural dynamics, engineering seismology, and earthquake engineering. In addition, some chapters in the book are based on works carried out under the leadership and initiative of Professor Sigbjörnsson and showcase his contribution to the understanding of seismic hazard and risk in Iceland. As such, the book is useful for both researchers and practicing engineers who are interested in recent research advances in structural dynamics and earthquake engineering, and in particular to those interested in seismic hazard and risk in Iceland.
Book Synopsis Nonlinear Seismic Analysis and Design of Reinforced Concrete Buildings by : P. Fajfar
Download or read book Nonlinear Seismic Analysis and Design of Reinforced Concrete Buildings written by P. Fajfar and published by CRC Press. This book was released on 1992-03-20 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forty scientists working in 13 different countries detail in this work the most recent advances in seismic design and performance assessment of reinforced concrete buildings. It is a valuable contribution in the mitigation of natural disasters.
Book Synopsis Performance-Based Seismic Engineering: Vision for an Earthquake Resilient Society by : Matej Fischinger
Download or read book Performance-Based Seismic Engineering: Vision for an Earthquake Resilient Society written by Matej Fischinger and published by Springer. This book was released on 2014-07-15 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bled workshops have traditionally produced reference documents providing visions for the future development of earthquake engineering as foreseen by leading researchers in the field. The participants of the 2011 workshop built on the tradition of these events initiated by Professors Fajfar and Krawinkler to honor their important research contributions and have now produced a book providing answers to crucial questions in today’s earthquake engineering: “What visible changes in the design practice have been brought about by performance-based seismic engineering? What are the critical needs for future advances? What actions should be taken to respond to those needs?” The key answer is that research interests should go beyond the narrow technical aspects and that the seismic resilience of society as a whole should become an essential part of the planning and design process. The book aims to provide essential guidelines for researchers, professionals and students in the field of earthquake engineering. It will also be of particular interest for all those working at insurance companies, governmental, civil protection and emergency management agencies that are responsible for assessing and planning community resilience. The introductory chapter of the book is based on the keynote presentation given at the workshop by the late Professor Helmut Krawinkler. As such, the book includes Helmut’s last and priceless address to the engineering community, together with his vision and advice for the future development of performance-based design, earthquake engineering and seismic risk management.
Book Synopsis Proceedings of the Canadian Society of Civil Engineering Annual Conference 2022 by : Rishi Gupta
Download or read book Proceedings of the Canadian Society of Civil Engineering Annual Conference 2022 written by Rishi Gupta and published by Springer Nature. This book was released on with total page 1270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Report written by and published by . This book was released on 2008 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis ASCE Standard, ASCE/SEI, 41-17, Seismic Evaluation and Retrofit of Existing Buildings by : American Society of Civil Engineers
Download or read book ASCE Standard, ASCE/SEI, 41-17, Seismic Evaluation and Retrofit of Existing Buildings written by American Society of Civil Engineers and published by . This book was released on 2017 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: Standard ASCE/SEI 41-17 describes deficiency-based and systematic procedures that use performance-based principles to evaluate and retrofit existing buildings to withstand the effects of earthquakes.
Book Synopsis Experimental and Analytical Investigation of Blast Performance of Seismically Resistant Bridge Piers by : Shūichi Fujikura
Download or read book Experimental and Analytical Investigation of Blast Performance of Seismically Resistant Bridge Piers written by Shūichi Fujikura and published by . This book was released on 2008 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling Strength Degradation of Reinforced Concrete Structural Walls by : Amin Safdari
Download or read book Modeling Strength Degradation of Reinforced Concrete Structural Walls written by Amin Safdari and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reinforced concrete structural walls are a widely used structural system in modern construction in regions where strong ground shaking is likely to occur. For performance-based design of structural walls, including coupled wall systems, it is necessary to model cyclic responses with strength and stiffness deterioration of the prototype system over a wide range of shaking intensities. Current models typically incorporate strength loss using ad-hoc approaches that manipulate material relations to produce strength loss that are difficult to calibrate for the broad range of expected shaking intensities. To address this issue, a model is proposed that captures strength and stiffness degradation compatible with backbone curves that are currently available in the literature. The model is tested in case studies under static and dynamic loading to demonstrate its reliability and effectiveness. The model is refined further to be used for coupled wall systems where the fluctuation of shear and axial load in the coupled piers makes it difficult to pre-determine the deformation parameters of the backbone curves for the piers.In a separate but related study, a database of reinforced concrete wall tests is assembled to develop a new model that estimates the plastic hinge length of flexure controlled structural walls and validate the model against test results. Plastic hinge lengths have been widely used and it is well known that deformation parameters of backbone curves (Structural walls or any other element) depend on element size (Plastic hinge length). The goal of this study is to calibrate backbone curve deformation parameters for a range of wall element sizes and then use the calibrated plastic hinge lengths in the subsequent case studies that incorporate strength loss.
Book Synopsis Dynamic Analysis of Reinforced Concrete Shear Wall Buildings by : Bruce William Slight
Download or read book Dynamic Analysis of Reinforced Concrete Shear Wall Buildings written by Bruce William Slight and published by . This book was released on 1974 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents a method of predicting the load-deformation response of a reinforced concrete member under repeated reversing cyclic load. Deformations due to flexure, shear and axial load are accounted for at all times using separate hysteresis loops for flexure and shear. A method of predicting the response of a reinforced concrete frame subjected to an earthquake loading is pre sented. The method accounts for deformations in addition to elastic flexural deformations by introducing an equiva lent rotational spring at each member end. By defining the properties of the spring properly, the response of the model can closely simulate that of the actual member. Standard slope deflection equations are modified to accommodate elastic members with rotational springs at their ends. When these equations are used to construct the frame stiffness matrix, computations in the inelastic range can be done in the same manner as those in the elastic range. The stiffness matrix is thus updated to be compat ible with the deteriorated structure at each instant of the motion. The equations of motion are solved using a linear acceleration method. A behavioral study is presented based on the analyses of seven twenty story shear wall structures. Variables with in the behavioral study were horizontal force factor K,shear stiffness and taper. The results of the behavioral study are discussed and compared and conclusions drawn.
Book Synopsis Numerical Modelling and Capacity Design of Earthquake-resistant Reinforced Concrete Walls by : Peter Linde
Download or read book Numerical Modelling and Capacity Design of Earthquake-resistant Reinforced Concrete Walls written by Peter Linde and published by Birkhauser. This book was released on 1993 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Evaluation and Rehabilitation of Structures by : Alper Ilki
Download or read book Seismic Evaluation and Rehabilitation of Structures written by Alper Ilki and published by Springer Science & Business Media. This book was released on 2013-08-15 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past, facilities considered to be at the end of their useful life were demolished and replaced with new ones that better met the functional requirements of modern society, including new safety standards. Humankind has recently recognised the threats to the environment and to our limited natural resources due to our relentless determination to destroy the old and build anew. With the awareness of these constraints and the emphasis on sustainability, in future the majority of old structures will be retrofitted to extend their service life as long as feasible. In keeping with this new approach, the EU’s Construction Products Regulation 305/2011, which is the basis of the Eurocodes, included the sustainable use of resources as an "Essential Requirement" for construction. So, the forthcoming second generation of EN-Eurocodes will cover not only the design of new structures, but the rehabilitation of existing ones as well. Most of the existing building stock and civil infrastructures are seismically deficient. When the time comes for a decision to prolong their service life with the help of structural and architectural upgrading, seismic retrofitting may be needed. Further, it is often decided to enhance the earthquake resistance of facilities that still meet their functional requirements and fulfil their purpose, if they are not earthquake-safe. In order to decide how badly a structure needs seismic upgrading or to prioritise it in a population of structures, a seismic evaluation is needed, which also serves as a guide for the extent and type of strengthening. Seismic codes do not sufficiently cover the delicate phase of seismic evaluation nor the many potential technical options for seismic upgrading; therefore research is on-going and the state-of-the-art is constantly evolving. All the more so as seismic evaluation and rehabilitation demand considerable expertise, to make best use of the available safety margins in the existing structure, to adapt the engineering capabilities and techniques at hand to the particularities of a project, to minimise disruption of use, etc. Further, as old structures are very diverse in terms of their materials and layout, seismic retrofitting does not lend itself to straightforward codified procedures or cook-book approaches. As such, seismic evaluation and rehabilitation need the best that the current state-of-the-art can offer on all aspects of earthquake engineering. This volume serves this need, as it gathers the most recent research of top seismic experts from around the world on seismic evaluation, retrofitting and closely related subjects.
Book Synopsis Modelling and Analysis of Reinforced Concrete Structures for Dynamic Loading by : Christian Meyer
Download or read book Modelling and Analysis of Reinforced Concrete Structures for Dynamic Loading written by Christian Meyer and published by CISM International Centre for Mechanical Sciences. This book was released on 1998-07-09 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive review of the material behavior of concrete under dynamic loads, especially impact and impuls, opens the volume. It is followed by a summary of the various analytical tools available to engineers interested in analyzing the nonlinear behavior of reinforced concrete members for dynamic load. These range from relatively simple and practice-oriented push-over analysis to sophisticated layered finite element models. Important design-related topics are discussed, with special emphasis on performance of concrete frames subjected to seismic loads. The significance of modern software systems is recognized by including extensive examples. For readers not current in dynamic analysis methods, an appendix contains a review of the mathematical methods most commonly used for such analysis.
Book Synopsis Development of Analytical Models for Reinforced Concrete Masonry Flexural Walls by : Won-Kee Hong
Download or read book Development of Analytical Models for Reinforced Concrete Masonry Flexural Walls written by Won-Kee Hong and published by . This book was released on 1989 with total page 1132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
