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Critical Excitation Methods in Earthquake Engineering

Critical Excitation Methods in Earthquake Engineering Author Izuru Takewaki
ISBN-10 9780080994291
Release 2013-06-03
Pages 400
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After the March 11, 2011, earthquake in Japan, there is overwhelming interest in worst-case analysis, including the critical excitation method. Nowadays, seismic design of structures performed by any seismic code is based on resisting previous natural earthquakes. Critical Excitation Methods in Earthquake Engineering, 2e, develops a new framework for modeling design earthquake loads for inelastic structures. The 2e, includes three new chapters covering the critical excitation problem for multi-component input ground motions, and that for elastic-plastic structures in a more direct way are incorporated and discussed in more depth. Finally, the problem of earthquake resilience of super high-rise buildings is discussed from broader viewpoints. Solves problems of earthquake resilience of super high-rise buildings Three new chapters on critical excitation problem for multi-component input ground motions Includes numerical examples of one and two-story models



Improving the Earthquake Resilience of Buildings

Improving the Earthquake Resilience of Buildings Author Izuru Takewaki
ISBN-10 9781447141440
Release 2012-07-26
Pages 324
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Engineers are always interested in the worst-case scenario. One of the most important and challenging missions of structural engineers may be to narrow the range of unexpected incidents in building structural design. Redundancy, robustness and resilience play an important role in such circumstances. Improving the Earthquake Resilience of Buildings: The worst case approach discusses the importance of worst-scenario approach for improved earthquake resilience of buildings and nuclear reactor facilities. Improving the Earthquake Resilience of Buildings: The worst case approach consists of two parts. The first part deals with the characterization and modeling of worst or critical ground motions on inelastic structures and the related worst-case scenario in the structural design of ordinary simple building structures. The second part of the book focuses on investigating the worst-case scenario for passively controlled and base-isolated buildings. This allows for detailed consideration of a range of topics including: A consideration of damage of building structures in the critical excitation method for improved building-earthquake resilience, A consideration of uncertainties of structural parameters in structural control and base-isolation for improved building-earthquake resilience, and New insights in structural design of super high-rise buildings under long-period ground motions. Improving the Earthquake Resilience of Buildings: The worst case approach is a valuable resource for researchers and engineers interested in learning and applying the worst-case scenario approach in the seismic-resistant design for more resilient structures.



Modern Earthquake Engineering

Modern Earthquake Engineering Author Junbo Jia
ISBN-10 9783642318542
Release 2016-10-28
Pages 955
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This book addresses applications of earthquake engineering for both offshore and land-based structures. It is self-contained as a reference work and covers a wide range of topics, including topics related to engineering seismology, geotechnical earthquake engineering, structural engineering, as well as special contents dedicated to design philosophy, determination of ground motions, shock waves, tsunamis, earthquake damage, seismic response of offshore and arctic structures, spatial varied ground motions, simplified and advanced seismic analysis methods, sudden subsidence of offshore platforms, tank liquid impacts during earthquakes, seismic resistance of non-structural elements, and various types of mitigation measures, etc. The target readership includes professionals in offshore and civil engineering, officials and regulators, as well as researchers and students in this field.



Design Optimization of Active and Passive Structural Control Systems

Design Optimization of Active and Passive Structural Control Systems Author Lagaros, Nikos D.
ISBN-10 9781466620308
Release 2012-08-31
Pages 414
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A typical engineering task during the development of any system is, among others, to improve its performance in terms of cost and response. Improvements can be achieved either by simply using design rules based on the experience or in an automated way by using optimization methods that lead to optimum designs. Design Optimization of Active and Passive Structural Control Systems includes Earthquake Engineering and Tuned Mass Damper research topics into a volume taking advantage of the connecting link between them, which is optimization. This is a publication addressing the design optimization of active and passive control systems. This title is perfect for engineers, professionals, professors, and students alike, providing cutting edge research and applications.



Structural Seismic Design Optimization and Earthquake Engineering Formulations and Applications

Structural Seismic Design Optimization and Earthquake Engineering  Formulations and Applications Author Plevris, Vagelis
ISBN-10 9781466616417
Release 2012-05-31
Pages 456
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Throughout the past few years, there has been extensive research done on structural design in terms of optimization methods or problem formulation. But, much of this attention has been on the linear elastic structural behavior, under static loading condition. Such a focus has left researchers scratching their heads as it has led to vulnerable structural configurations. What researchers have left out of the equation is the element of seismic loading. It is essential for researchers to take this into account in order to develop earthquake resistant real-world structures. Structural Seismic Design Optimization and Earthquake Engineering: Formulations and Applications focuses on the research around earthquake engineering, in particular, the field of implementation of optimization algorithms in earthquake engineering problems. Topics discussed within this book include, but are not limited to, simulation issues for the accurate prediction of the seismic response of structures, design optimization procedures, soft computing applications, and other important advancements in seismic analysis and design where optimization algorithms can be implemented. Readers will discover that this book provides relevant theoretical frameworks in order to enhance their learning on earthquake engineering as it deals with the latest research findings and their practical implementations, as well as new formulations and solutions.



Critical Earthquake Response of Elastic Plastic Structures Under Near Fault or Long Duration Ground Motions Closed Form Approach via Impulse Input

Critical Earthquake Response of Elastic Plastic Structures Under Near Fault or Long Duration Ground Motions  Closed Form Approach via Impulse Input Author Izuru Takewaki
ISBN-10 9782889197422
Release 2015-12-22
Pages
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The specialty section Earthquake Engineering is one branch of Frontiers in Built Environment and welcomes critical and in-depth submissions on earthquake ground motions and their effects on buildings and infrastructures. Manuscripts should yield new insights and ultimately contribute to a safer and more reliable design of building structures and infrastructures. The scope includes the characterization of earthquake ground motions (e.g. near-fault, far-fault, short-period, long-period), their underlying properties, their intrinsic relationship with structural responses, and the true behaviors of building structures and infrastructures under risky and uncertain ground motions. More specific topics include recorded ground motions, generated ground motions, response spectra, stochastic modeling of ground motion, critical excitation, geotechnical aspects, soil mechanics, soil liquefaction, soil-structure interactions, pile foundations, earthquake input energy, structural control, passive control, active control, base-isolation, steel structures, reinforced concrete structures, wood structures, building retrofit, structural optimization, uncertainty analysis, robustness analysis, and redundancy analysis. This eBook includes four original research papers, in addition to the Specialty Grand Challenge article, on the critical earthquake response of elastic-plastic structures under near-fault or long-duration ground motions which were published in the specialty section Earthquake Engineering. In the early stage of dynamic nonlinear response analysis of structures around 1960s, a simple hysteretic structural model and a simple sinusoidal earthquake ground motion input were dealt with together with random inputs. The steady-state response was tackled by an equivalent linearization method developed by Caughey, Iwan and others. In fact, the resonance plays a key role in the earthquake-resistant design and it has a strong effect even in case of near-fault ground motions. In order to draw the steady-state response curve and investigate the resonant property, two kinds of repetition have to be introduced. One is a cycle, for one forced input frequency, of the initial guess of the steady-state response amplitude, the construction of the equivalent linear model, the analysis of the steady-state response amplitude using the equivalent linear model and the update of the equivalent linear model based on the computed steady-state response amplitude. The other is the sweeping over a range of forced input frequencies. This process is quite tedious. Four original research papers included in this eBook propose a new approach to overcome this difficulty. Kojima and Takewaki demonstrated that the elastic-plastic response as continuation of free-vibrations under impulse input can be derived in a closed form by a sophisticated energy approach without solving directly the equations of motion as differential equations. While, as pointed out above, the approach based on the equivalent linearization method requires the repetition of application of the linearized equations, the method by Kojima and Takewaki does not need any repetition. The double impulse, triple impulse and multiple impulses enable us to describe directly the critical timing of impulses (resonant frequency) which is not easy for the sinusoidal and other inputs without a repetitive procedure. It is important to note that, while most of the previous methods employ the equivalent linearization of the structural model with the input unchanged, the method treated in this eBook transforms the input into a series of impulses with the structural model unchanged. This characteristic guarantees high accuracy and reliability even in the large plastic deformation range. The approach presented in this eBook is an epoch-making accomplishment to open the door for simpler and deeper understanding of structural reliability of built environments in the elastic-plastic range



Building Control with Passive Dampers

Building Control with Passive Dampers Author Izuru Takewaki
ISBN-10 9780470824924
Release 2011-09-23
Pages 320
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The recent introduction of active and passive structural control methods has given structural designers powerful tools for performance-based design. However, structural engineers often lack the tools for the optimal selection and placement of such systems. In Building Control with Passive Dampers , Takewaki brings together most the reliable, state-of-the-art methods in practice around the world, arming readers with a real sense of how to address optimal selection and placement of passive control systems. The first book on optimal design, sizing, and location selection of passive dampers Combines theory and practical applications Describes step-by-step how to obtain optimal damper size and placement Covers the state-of-the-art in optimal design of passive control Integrates the most reliable techniques in the top literature and used in practice worldwide Written by a recognized expert in the area MATLAB code examples available from the book’s Companion Website This book is essential for post-graduate students, researchers, and design consultants involved in building control. Professional engineers and advanced undergraduates interested in seismic design, as well as mechanical engineers looking for vibration damping techniques, will also find this book a helpful reference. Code examples available at www.wiley.com/go/takewaki



International Efforts in Lifeline Earthquake Engineering

International Efforts in Lifeline Earthquake Engineering Author Craig A. Davis
ISBN-10 0784413231
Release 2014
Pages 678
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Proceedings of the Sixth China-Japan-U.S. Trilateral Symposium on Lifeline Earthquake Engineering held in Chengdu China May 28aJune 1 2013. Sponsored by Beijing University of Technology China; Kanazawa University Japan; University of Southern California U.S.A.; Southwest Jiaotong University China; Shanghai Institute of Disaster Prevention and Relief China; Research Institute of Lifeline Engineering Inc. Japan; Lifeline Network Kansai (LiNK) Japan; American Society of Civil Engineers Technical Council on Lifeline Earthquake Engineering (TCLEE) U.S.A.; International Association of Chinese Geotechnical Engineers (IACGE) U.S.A.; and the National Natural Science Foundation of China. This TCLEE Monograph contains 86 peer-reviewed papers covering recent developments in lifeline earthquake engineering involving water wastewater gas and liquid fuels electrical power telecommunications and transportation systems. Topics include: seismicity ground motions and site effects seismic performance modeling evaluation and design of infrastructure systems seismic reliability and post-earthquake serviceability recovery and resilience of lifeline systems hospitals lifeline interactions fire following earthquaketunnels and underground structuresgeotechnical and structural earthquake behavior related to lifelinesseismic testing and analysis for lifelines



System Identification for Structural Health Monitoring

System Identification for Structural Health Monitoring Author Izuru Takewaki
ISBN-10 9781845646288
Release 2012
Pages 254
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System identification (SI) techniques are important in reducing gaps between the constructed structural systems and their structural design models and in health monitoring for damage detection. Modal-parameter SI and physical-parameter SI are two major branches in SI.Special character of this book: (1) The physical-parameter SI method explained in this book requires only two accelerometers for measurement of records. Furthermore only a simple manipulation of Fourier transformation is required.(2) The stiffness and damping can be identified simultaneously.(3) The modal parameter SI can supplement or support the result by the physical-parameter SI method.(4) In place of usual low-pass or high-pass filter techniques, a novel noise-bias compensation method is explained. Because the noise itself is not known in many cases, the identification and elimination of noise is a tough problem.(5) A new technique of system identification is explained in the case where an inner vibration source exists.(6) The accuracy of the explained SI methods is examined by the actual recorded data.(7) MATLAB codes are available.This book is intended for Structural Engineers, Mechanical Engineers, Researchers, Graduate and undergraduate students.



Critical excitation method for calculating earthquake effects on nuclear plant structures

Critical excitation method for calculating earthquake effects on nuclear plant structures Author B. Bedrosian
ISBN-10 UOM:39015038541655
Release 1980
Pages 4
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Critical excitation method for calculating earthquake effects on nuclear plant structures has been writing in one form or another for most of life. You can find so many inspiration from Critical excitation method for calculating earthquake effects on nuclear plant structures also informative, and entertaining. Click DOWNLOAD or Read Online button to get full Critical excitation method for calculating earthquake effects on nuclear plant structures book for free.



Proceedings fourth national meeting of the Universities Council for Earthquake Engineering Research June 28 29 1976 the University of British Columbia

Proceedings  fourth national meeting of the Universities Council for Earthquake Engineering Research  June 28 29  1976  the University of British Columbia Author Universities Council for Earthquake Engineering Research
ISBN-10 UCSD:31822030792477
Release 1976
Pages 273
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Proceedings fourth national meeting of the Universities Council for Earthquake Engineering Research June 28 29 1976 the University of British Columbia has been writing in one form or another for most of life. You can find so many inspiration from Proceedings fourth national meeting of the Universities Council for Earthquake Engineering Research June 28 29 1976 the University of British Columbia also informative, and entertaining. Click DOWNLOAD or Read Online button to get full Proceedings fourth national meeting of the Universities Council for Earthquake Engineering Research June 28 29 1976 the University of British Columbia book for free.



Computational Methods in Earthquake Engineering

Computational Methods in Earthquake Engineering Author Manolis Papadrakakis
ISBN-10 9400700539
Release 2010-12-06
Pages 586
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This book provides an insight in advanced methods and concepts for structural analysis and design against seismic loading. The book consists of 25 chapters dealing with a wide range of timely issues in contemporary Earthquake Engineering. In brief, the topics covered are: collapse assessment, record selection, effect of soil conditions, problems in seismic design, protection of monuments, earth dam structures and liquid containers, numerical methods, lifetime assessment, post-earthquake measures. A common ground of understanding is provided between the communities of Earth Sciences and Computational Mechanics towards mitigating seismic risk. The topic is of great social and scientific interest, due to the large number of scientists and practicing engineers currently working in the field and due to the great social and economic consequences of earthquakes.



Abstract Journal in Earthquake Engineering

Abstract Journal in Earthquake Engineering Author
ISBN-10 UOM:39015023887733
Release 1992
Pages
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Abstract Journal in Earthquake Engineering has been writing in one form or another for most of life. You can find so many inspiration from Abstract Journal in Earthquake Engineering also informative, and entertaining. Click DOWNLOAD or Read Online button to get full Abstract Journal in Earthquake Engineering book for free.



Earthquake Engineering and Structural Dynamics in Memory of Ragnar Sigbj rnsson

Earthquake Engineering and Structural Dynamics in Memory of Ragnar Sigbj  rnsson Author Rajesh Rupakhety
ISBN-10 9783319620992
Release 2017-12-07
Pages 403
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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.



Proceedings of the World Conference on Earthquake Engineering

Proceedings of the World Conference on Earthquake Engineering Author
ISBN-10 CORNELL:31924058249990
Release 1984
Pages
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Each of the volumes for the 1984 conference deals with one or more topics related to earthquake engineering.



Structural Dynamics of Earthquake Engineering

Structural Dynamics of Earthquake Engineering Author S Rajasekaran
ISBN-10 9781845695736
Release 2009-05-30
Pages 896
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Given the risk of earthquakes in many countries, knowing how structural dynamics can be applied to earthquake engineering of structures, both in theory and practice, is a vital aspect of improving the safety of buildings and structures. It can also reduce the number of deaths and injuries and the amount of property damage. The book begins by discussing free vibration of single-degree-of-freedom (SDOF) systems, both damped and undamped, and forced vibration (harmonic force) of SDOF systems. Response to periodic dynamic loadings and impulse loads are also discussed, as are two degrees of freedom linear system response methods and free vibration of multiple degrees of freedom. Further chapters cover time history response by natural mode superposition, numerical solution methods for natural frequencies and mode shapes and differential quadrature, transformation and Finite Element methods for vibration problems. Other topics such as earthquake ground motion, response spectra and earthquake analysis of linear systems are discussed. Structural dynamics of earthquake engineering: theory and application using Mathematica and Matlab provides civil and structural engineers and students with an understanding of the dynamic response of structures to earthquakes and the common analysis techniques employed to evaluate these responses. Worked examples in Mathematica and Matlab are given. Explains the dynamic response of structures to earthquakes including periodic dynamic loadings and impulse loads Examines common analysis techniques such as natural mode superposition, the finite element method and numerical solutions Investigates this important topic in terms of both theory and practise with the inclusion of practical exercise and diagrams



Fundamentals of Earthquake Engineering

Fundamentals of Earthquake Engineering Author Amr S. Elnashai
ISBN-10 STANFORD:36105131747870
Release 2008-11-03
Pages 366
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Fundamentals of Earthquake Engineering combines aspects of engineering seismology, structural and geotechnical earthquake engineering to assemble the vital components required for a deep understanding of response of structures to earthquake ground motion, from the seismic source to the evaluation of actions and deformation required for design. The nature of earthquake risk assessment is inherently multi-disciplinary. Whereas Fundamentals of Earthquake Engineering addresses only structural safety assessment and design, the problem is cast in its appropriate context by relating structural damage states to societal consequences and expectations, through the fundamental response quantities of stiffness, strength and ductility. The book is designed to support graduate teaching and learning, introduce practicing structural and geotechnical engineers to earthquake analysis and design problems, as well as being a reference book for further studies. Fundamentals of Earthquake Engineering includes material on the nature of earthquake sources and mechanisms, various methods for the characterization of earthquake input motion, damage observed in reconnaissance missions, modeling of structures for the purposes of response simulation, definition of performance limit states, structural and architectural systems for optimal seismic response, and action and deformation quantities suitable for design. The accompanying website at www.wiley.com/go/elnashai contains a comprehensive set of slides illustrating the chapters and appendices. A set of problems with solutions and worked-through examples is available from the Wley Editorial team. The book, slides and problem set constitute a tried and tested system for a single-semester graduate course. The approach taken avoids tying the book to a specific regional seismic design code of practice and ensures its global appeal to graduate students and practicing engineers.