Framework for Damage-based Probabilistic Seismic Performance Evaluation of Reinforced Concrete Frames PDF Download
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Author: YeongAe Heo
Publisher:
ISBN:
Category :
Languages : en
Pages : 408
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Book Description
Author: YeongAe Heo
Publisher:
ISBN:
Category :
Languages : en
Pages : 408
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Book Description
Author: fib Fédération internationale du béton
Publisher: fib Fédération internationale du béton
ISBN: 2883941084
Category : Technology & Engineering
Languages : en
Pages : 124
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Book Description
In the last ten to fifteen years a vast amount of research has been undertaken to improve on earlier methods for analysing the seismic reliability of structures. These efforts focused on identifying aspects of prominent relevance and disregarding the inessential ones, with the goal of producing methods that are both more efficient and easier to use in practice. Today this goal can be said to be substantially achieved. During these years scientific activity covered all of the many aspects involved in such a multi-disciplinary problem, ranging from seismology, to geotechnics, to structural analysis and economy, all of them to be consistently organised into a probabilistic framework. As the output of this research was dispersed into a multitude of technical papers, fib Commission 7 thought it worthwhile to select the essential aspects of this large body of knowledge and to present them into a coherent and accessible document for structural engineers. To this end a task group of specialists was formed, whose qualifications come from their personal involvement in the above-mentioned developments throughout this period of time. From its inception the group decided that the bulletin should have had a distinct educational character and provide a clear overview of the methods available. The outcome is a compact volume that starts by introducing the concepts and definitions of performance-based engineering, continues with two chapters on assessment and design, respectively, presenting the methods in detail accompanied by illustrative examples, and concludes with an appendix with sample programming excerpts for their implementation. It is believed that at present fib Bulletin 68 represents a unique compendium on probabilistic performance-based seismic design.
Author: Masaya Murakami
Publisher:
ISBN:
Category : Buildings
Languages : en
Pages : 92
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Book Description
Author: Ozan Cem Celik
Publisher:
ISBN:
Category : Buildings
Languages : en
Pages :
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Book Description
The infrequent nature of earthquakes in the Central and Eastern United States (CEUS), and the fact that none with intensity comparable to the New Madrid sequence of 1811--12 or the Charleston earthquake of 1886 has occurred in the past century, have caused the earthquake hazard in the region to be ignored until quite recently. The seismic performance of reinforced concrete (RC) frames in the CEUS, which have primarily been designed for gravity load effects, is expected to be deficient when subjected to earthquakes that are judged, in recent seismological research, as being plausible in the New Madrid Seismic Zone (NMSZ). The objective of this study is to develop a set of probability-based tools for efficient uncertainty analysis and seismic vulnerability and risk assessment of such gravity load designed (GLD) RC frames and to use these tools in evaluating the seismic vulnerability of RC frames that are representative of the building inventory in Memphis, TN -- the largest population center close to the NMSZ. Synthetic earthquake ground motions for the CEUS that are available from two different Mid-America Earthquake (MAE) Center projects were used in the finite element-based simulations for determining the seismic demand on the GLD RC frames by nonlinear time history analysis (NTHA). A beam-column joint model was developed to address the deficiencies in the joints of GLD frames and was incorporated in the finite element structural models. Seismic fragilities were derived for low-, mid-, and high-rise GLD RC frames. Various sources of uncertainty were propagated through the analysis, and their significance for fragility assessment was examined. These fragilities were used to evaluate the vulnerability of the RC frame inventory in Memphis, TN with regard to performance-based design objectives, defined in terms of performance levels associated with reference earthquake hazard levels. This performance appraisal indicated that GLD RC frames do not meet the life safety and collapse prevention performance objectives that are found in recent building codes and guidelines for performance-based earthquake engineering.
Author: Ozan Cem Celik
Publisher: VDM Publishing
ISBN: 9783836464154
Category : Architecture
Languages : en
Pages : 152
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Book Description
This book presents a set of probability-based tools for efficient uncertainty analysis and for seismic vulnerability and risk assessment of structures, and illustrates the use of these tools in evaluating the potential impact of future earthquakes that may occur in the New Madrid Seismic Zone on reinforced concrete frames in the Central and Eastern United States. Due to the lack of natural strong motion records in this low-to-moderate seismic region, synthetic earthquake ground motions developed in recent seismological research are used in nonlinear finite element-based time history analyses to determine the seismic demand on the gravity load designed (GLD) frames. Seismic fragilities that incorporate various sources of uncertainty are formulated for low-, mid-, and high-rise GLD frames, and are used in the performance appraisal of the building frame inventory in Memphis, TN. This fragility assessment indicates that traditional GLD reinforced concrete frames may not meet the life safety and collapse prevention performance objectives that are stipulated in recent building codes and guidelines for performance-based earthquake engineering. The intended audience of this book is researchers and professional engineers involved with the performance assessment of existing buildings for upgraded seismic resistance.
Author: Mathias Haindl
Publisher:
ISBN:
Category :
Languages : en
Pages : 86
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Book Description
Quantifying and propagating aleatory and epistemic uncertainty in nonlinear structural response simulation is key to robust performance-based seismic assessments. In this thesis, the focus is on the probabilistic seismic performance assessment of a non-ductile three-story reinforced concrete infilled frame building. The uncertainty in ground motion records and the uncertainty embedded in structural model parameters are explicitly considered. An equivalent strut model is used for the masonry infill walls, where the six constitutive parameters that define its backbone curve are treated as random variables. The variability in these parameters is characterized by developing correlated and uncorrelated distributions of the deduced-to-predicted ratios using data from 113 experimental tests. The uncertainties are propagated using Latin hypercube sampling to generate randomized structural model realizations. Multiple stripe analysis is performed with hazard-consistent ground motions. The effect of considering modeling uncertainty is investigated in terms of the distributions of maximum story drift ratios and drift based fragility functions. It is shown that the inclusion of modeling uncertainty has significant effects on the seismic performance of the case study building. The dispersion in the response and the mean annual frequency of exceeding the drift-based limit states are increased when modeling uncertainty is included. The initial stiffness of the infill walls is observed to have the most significant contribution to the performance of the building.
Author: Iman Mansouri
Publisher: Woodhead Publishing
ISBN: 0323885314
Category : Technology & Engineering
Languages : en
Pages : 427
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Book Description
Seismic Evaluation, Damage, and Mitigation in Structures covers recent developments in the field of seismic performance assessment of structures. Earthquakes are one of the main natural hazards that can directly cause damage to a structure or even instigate a structural collapse, resulting in significant economic and human loss of life. In the event of an earthquake where many buildings and infrastructure components are not able to function afterward, or if extensive repair and associated disruption are needed, it can be extremely costly and take a long time to resolve. Divided into three parts, this book reviews and discusses earthquake-induced damage evaluation in structures, the repair of structural and non-structural components, and seismic damage mitigation strategies. With contributions from the leading experts in the field, this book is for earthquake engineers, structural engineers, PhD students studying civil engineering, people who can easily inspect and repair structures for quick reoccupation, and for those who understand topics such as design and damage mitigation, and limited structural or non-structural damage in seismic events. Provides effective and economical methods to assess the seismic performance of structures Analyzes earthquake damage and repair or demolition of buildings Offers future needs for constructing seismic resistant structures
Author: Liviu Crainic
Publisher: CRC Press
ISBN: 0415631866
Category : Technology & Engineering
Languages : en
Pages : 266
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Book Description
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.
Author: Timothy Philip James
Publisher:
ISBN:
Category :
Languages : en
Pages : 91
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Book Description
As design has moved from strength based to performance based, there has been an effort to relate building response to damage. Because decision-makers typically consider human lives, property damage and cost, setting performance requirements in terms of the damage that a building is likely to sustain over time and its associated cost is more relevant to them. The Pacific Earthquake Engineering Research Center (PEER) has developed a computationally expensive methodology for estimating cumulative damage to a structure over its lifetime. This thesis shows that linear analysis produces results within an acceptable margin of error when substituted for excessively accurate non-linear, resulting in significant time savings.
Author: Kevin Rory Mackie
Publisher:
ISBN:
Category : Concrete bridges
Languages : en
Pages : 180
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Book Description
