Download or read book Evaluating and Improving the ACI 318 19 Shear Strength Relationships for Seismic Design of Reinforced Concrete Columns written by Alex-Amirnezam Fakhroo and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ACI 318-19 provisions for computing the one-way shear capacity of non-prestressed reinforced concrete (RC) columns are primarily based on the results obtained from the RC beams. These equations were introduced in ACI 318-19 to account for the effects of the longitudinal reinforcement ratio, the depth of the column, and the applied axial load on the overall shear capacity. In this study, a column database was developed and used to evaluate the accuracy of the one-way shear provisions. Then, the ACI 318-19 shear capacity equations were evaluated by using the test results for non-prestressed RC columns. The results showed that these relationships significantly underpredict the actual shear capacity of the columns obtained from the test results. To improve the accuracy of the shear capacity equations, a new relationship is proposed and discussed in detail.
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
Download or read book Seismic Shear Strength of Reinforced Concrete Columns written by M. J. N. Priestley and published by . This book was released on 1993 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seismic Evaluation of Shear critical Reinforced Concrete Columns and Their Connections written by Jang Hoon Kim and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seismic Assessment and Retrofit of Reinforced Concrete Columns written by Konstantinos G. Megalooikonomou and published by Cambridge Scholars Publishing. This book was released on 2019-02-27 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reinforced concrete columns play a very important role in structural performance. As such, it is essential to apply a suitable analytical tool to estimate their structural behaviour considering all failure mechanisms such as axial, shear, and flexural failures. This book highlights the development of a fiber beam-column element accounting for shear effects and the effect of tension stiffening through reinforcement-to-concrete bond, along with the employment of suitable constitutive material laws.
Download or read book Seismic Evaluation of Existing Reinforced Concrete Building Columns written by Abraham Christopher Lynn and published by . This book was released on 2001 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seismic Design of Reinforced Concrete Structures for Controlled Inelastic Response written by Comité euro-international du béton and published by Thomas Telford. This book was released on 1998 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This detailed guide is designed to enable the reader to understand the relative importance of the numerous parameters involved in seismic design and the relationships between them, as well as the motivations behind the choices adopted by the codes.
Download or read book Computer Aided Seismic and Fire Retrofitting Analysis of Existing High Rise Reinforced Concrete Buildings written by Raja Rizwan Hussain and published by Springer. This book was released on 2015-08-13 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book details the analysis and design of high rise buildings for gravity and seismic analysis. It provides the knowledge structural engineers need to retrofit existing structures in order to meet safety requirements and better prevent potential damage from such disasters as earthquakes and fires. Coverage includes actual case studies of existing buildings, reviews of current knowledge for damages and their mitigation, protective design technologies, and analytical and computational techniques. This monograph also provides an experimental investigation on the properties of fiber reinforced concrete that consists of natural fibres like coconut coir and also steel fibres that are used for comparison in both Normal Strength Concrete (NSC) and High Strength Concrete (HSC). In addition, the authors examine the use of various repair techniques for damaged high rise buildings. The book will help upcoming structural design engineers learn the computer aided analysis and design of real existing high rise buildings by using ACI code for application of the gravity loads, UBC- 97 for seismic analysis and retrofitting analysis by computer models. It will be of immense use to the student community, academicians, consultants and practicing professional engineers and scientists involved in the planning, design, execution, inspection and supervision for the proper retrofitting of buildings.
Download or read book ACI 562 19 Code Requirements for Assessment Repair and Rehabilitation of Existing Concrete Structures ACI 562 19 and Comment written by ACI Committee 562 and published by . This book was released on 2019-05 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Seismic design of reinforced concrete structures for controlled inelastic response design concepts written by FIB – International Federation for Structural Concrete and published by FIB - International Federation for Structural Concrete. This book was released on 1997-03-01 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seismic Evaluation of Reinforced Concrete Columns and Collapse of Buildings written by Muhammad Shadab Lodhi and published by . This book was released on 2012 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: There are a large number of reinforced concrete (RC) buildings in seismically active areas of the world that are not designed and constructed in accordance with modern seismic design provisions. These buildings are vulnerable to severe damage or collapse due to their low lateral displacement capacity and rapid degradation of shear strength during strong ground motions. Typically, columns in such buildings lack adequate strength and ductility in reverse cyclic loading and experience brittle shear failure and loss of axial load carrying capacity. To assess vulnerability to earthquake damage and decide on the required level of retrofit, expected behavior of the columns in terms of strength and deformation capacity must be evaluated. This can be achieved by estimating the load-deformation response considering all potential failure mechanisms associated with axial, flexure and shear behavior.
Download or read book Seismic Design of Reinforced and Precast Concrete Buildings written by Robert E. Englekirk and published by John Wiley & Sons. This book was released on 2003-03-10 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt: * Presents the basics of seismic-resistant design of concrete structures. * Provides a major focus on the seismic design of precast bracing systems.
Download or read book Evaluation and Prediction of Shear Behavior of Reinforced Concrete Beam column Joints written by Firat Alemdar and published by . This book was released on 2007 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Beam-column joints are one of the most critical elements of reinforced concrete moment resisting frames subjected to lateral seismic loading. The older reinforced concrete buildings designed before the introduction of modern seismic codes in the early 1970's, in general, do not meet the current design code requirements. In particular, the beam-column joints in such existing buildings do not have appropriate detailing which leads to insufficient lateral strength or ductility to withstand the effects of a severe earthquake loading. Therefore, evaluation of the lateral load carrying capacity of existing buildings for subsequent retrofit is very important for the safety of the buildings. The economical aspect should also be considered during the design of a structure which is only possible if the behavior of the structure during an earthquake can be predicted. The focus of this research is to evaluate the shear behavior of reinforced concrete beam-column joints and to develop a suitable model that would predict the lateral load carrying capacity. Previous experimental studies and results have shown that the shear strength of beam-column joints depends on several variables including concrete strength, axial load ratio, joint geometry joint transverse reinforcement ratio, and displacement ductility. However, the current codes include the effects of all of these parameters in beam-column joint design. Therefore, previous analytical research is examined and this information is used to develop a shear strength model. The proposed model is mainly based on the shear strength model for columns developed by Sezen and Moehle (2004). The proposed shear strength model is verified with experimental test results. Overall, the model did a reasonable job of predicting the shear strength of reinforced concrete beam-column joints. The proposed model provides a simply tool for the analysis of existing reinforced concrete buildings subjected to lateral loading and to determine the amount of remediation necessary for satisfactory seismic performance.
Download or read book Seismic Behavior of Eccentric Reinforced Concrete Beam column slab Connections written by Burcu Burak and published by . This book was released on 2005 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seismic Design Aids for Nonlinear Analysis of Reinforced Concrete Structures written by Srinivasan Chandrasekaran and published by CRC Press. This book was released on 2016-04-19 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tools to Safeguard New Buildings and Assess Existing OnesNonlinear analysis methods such as static pushover are globally considered a reliable tool for seismic and structural assessment. But the accuracy of seismic capacity estimates-which can prevent catastrophic loss of life and astronomical damage repair costs-depends on the use of the correct b
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.
