Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Download Stochastic Dynamic Analysis Of Bridges Subjected To Spatially Varying Ground Motions full books in PDF, epub, and Kindle. Read online Stochastic Dynamic Analysis Of Bridges Subjected To Spatially Varying Ground Motions ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author : Katerina Konakli
Publisher :
ISBN 13 :
Total Pages : 246 pages
Book Rating : 4.:/5 (762 download)
Download or read book Stochastic Dynamic Analysis of Bridges Subjected to Spatially Varying Ground Motions written by Katerina Konakli and published by . This book was released on 2011 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Aikaterini Konakli
Publisher :
ISBN 13 : 9781124889573
Total Pages : 243 pages
Book Rating : 4.8/5 (895 download)
Download or read book Stochastic Dynamic Analysis of Bridges Subjected to Spatially Varying Ground Motions written by Aikaterini Konakli and published by . This book was released on 2011 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using response spectrum and time-history analysis methods, a thorough investigation of the response of bridges subjected to spatially varying support motions is performed. Three main causes of spatial variability are considered: the incoherence effect, which represents random differences in the amplitudes and phases of seismic waves due to reflections and refractions that occur during wave propagation in the heterogeneous medium of the ground and due to differential superposition of waves arriving from different parts of an extended source; the wave-passage effect, which describes the differences in the arrival times of waves at separate locations; and the site-response effect, which accounts for differences in the intensities and frequency contents of surface motions due to variable soil profiles underneath the supports. The multiple-support response spectrum (MSRS) method originally developed by Der Ki-ureghian and Neuenhofer (1992) is generalized to allow consideration of response quantities that depend on the support degrees of freedom, and extended to account for quasi-static contributions of truncated modes. Efficient algorithms and a computer code are developed for the implementation of the generalized and extended MSRS method. The code is used for comprehensive parametric analyses of four real bridge models with vastly different characteristics. The analyses identify cases of ground motion spatial variability and types of bridges for which the effects of spatial variability are significant. Methods for simulation of spatially varying ground motion arrays incorporating the effects of incoherence, wave passage and differential site response are developed. The simulated motions inherit statistical characteristics of a specified acceleration record at a reference site. The conditional simulation approach preserves time-history characteristics of the specified record; however, the array of motions exhibits increasing variability with distance from the reference site. The unconditional simulation method generates an array of motions that preserve the overall temporal and spectral characteristics of the specified record and exhibit uniform variability at all locations. The simulated motions are validated by examining their physical compliance and by comparing their response spectra, coherency characteristics and power spectral densities with corresponding target models. Sets of simulated support motions are used to investigate the effect of spatial variability on linear and non-linear bridge response by time-history analyses. Comparisons between linear and non-linear pier drifts are performed to assess the accuracy of the "equal dis-placement" rule (Veletsos and Newmark, 1960) for spatially varying ground motions. Comparisons between mean peak responses obtained from linear time-history and MSRS analyses provide information on the range of errors induced by the approximations involved in the latter method. Finally, coherency analysis of a recorded array of near-fault ground motions is performed. The ability of commonly used models to describe the incoherence component of this array is assessed.
Author : Deyi Zhang
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (126 download)
Download or read book Stochastic Modelling and Analysis for Bridges Under Spatially Varying Ground Motions written by Deyi Zhang and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthquake is undoubtedly one of the greatest natural disasters that can induce serious structural damage and huge losses of properties and lives. The resulting destructive consequences not only have made structural seismic analysis and design much more important but have impelled the necessity of more realistic representation of ground motions, such as inclusion of ground motion spatial variations in earthquake modelling and seismic analysis and design of structures. Recorded seismic ground motions exhibit spatial variations in their amplitudes and phases, and the spatial variabilities have an important effect on the responses of structures extended in space, such as long span bridges. Because of the multi-parametric nature and the complexity of the problems, the development of specific design provisions on spatial variabilities of ground motions in modern seismic codes has been impeded. Eurocode 8 is currently the only seismic standard worldwide that gives a set of detailed guidelines to explicitly tackle spatial variabilities of ground motions in bridge design, providing both a simplified design scheme and an analytical approach. However, there is gap between the code-specified provisions in Eurocode 8 and the realistic representation of spatially varying ground motions (SVGM) and the corresponding stochastic vibration analysis (SVA) approaches. This study is devoted to bridge this gap on modelling of SVGM and development of SVA approaches for structures extended in space under SVGM. A complete and realistic SVGM representation approach is developed by accounting for the incoherence effect, wave-passage effect, site-response effect, ground motion nonstationarity, tridirectionality, and spectra-compatibility. This effort brings together various aspects regarding rational seismic scenarios determination, comprehensive methods of accounting for varying site effects, conditional modelling of SVGM nonstationarity, and code-specified ground motion spectra-compatibility. A comprehensive, systematic, and efficient SVA methodology is derived for long span structures under tridirectional nonstationary SVGM. An absolute-response-oriented scheme of pseudo-excitation method and an improved high precision direct integration method are proposed to reduce the enormous computational effort of conventional nonstationary SVA. A scheme accounting for tridirectional varying site-response effect is incorporated in the nonstationary SVA scheme systematically. The proposed highly efficient and accurate SVA approach is implemented and verified in a general finite element analysis platform to make it readily applicable in SVA of complex structures. Based on the proposed SVA approach, parametric studies of two practical long span bridges under SVGM are conducted. To account for spatial randomness and variability of soil properties in soil-structure interaction analysis of structures under SVGM, a meshfree-Galerkin approach is proposed within the Karhunen-Loeve expansion scheme for representation of spatial soil properties modelled as a random field. The meshfree shape functions are proposed as a set of basis functions in the Galerkin scheme to solve integral equation of Karhunen-Loeve expansion, with a proposed optimization scheme in treating the compatibility between the target and analytical covariance models. The accuracy and validity of the meshfree-Galerkin scheme are assessed and demonstrated by representation of covariance models for various homogeneous and nonhomogeneous spatial fields. The developed modelling approaches of SVGM and the derived analytical SVA approaches can be applied to provide more refined solutions for quantitatively assessing code-specified design provisions and developing new design provisions. The proposed meshfree-Galerkin approach can be used to account for spatial randomness and variability of soil properties in soil-structure interaction analysis.
Author : Harry Grundmann
Publisher : CRC Press
ISBN 13 : 9789058095121
Total Pages : 780 pages
Book Rating : 4.0/5 (951 download)
Download or read book Structural Dynamics written by Harry Grundmann and published by CRC Press. This book was released on 2002 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings contain contributions presented by authors from more than 30 countries at EURODYN 2002. The proceedings show recent scientific developments as well as practical applications, they cover the fields of theory of vibrations, nonlinear vibrations, stochastic dynamics, vibrations of structured elements, wave propagation and structure-borne sound, including questions of fatigue and damping. Emphasis is laid on vibrations of bridges, buildings, railway structures as well as on the fields of wind and earthquake engineering, repectively. Enriched by a number of keynote lectures and organized sessions the two volumes of the proceedings present an overview of the state of the art of the whole field of structural dynamics and the tendencies ot its further development.
Author : Paolo Gardoni
Publisher : Springer
ISBN 13 : 3319524259
Total Pages : 558 pages
Book Rating : 4.3/5 (195 download)
Download or read book Risk and Reliability Analysis: Theory and Applications written by Paolo Gardoni and published by Springer. This book was released on 2017-02-24 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a unique collection of contributions from some of the foremost scholars in the field of risk and reliability analysis. Combining the most advanced analysis techniques with practical applications, it is one of the most comprehensive and up-to-date books available on risk-based engineering. All the fundamental concepts needed to conduct risk and reliability assessments are covered in detail, providing readers with a sound understanding of the field and making the book a powerful tool for students and researchers alike. This book was prepared in honor of Professor Armen Der Kiureghian, one of the fathers of modern risk and reliability analysis.
Author : Jordan Michael Seawright
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.:/5 (119 download)
Download or read book Case Study on the Dynamic Response of Long Bridges Subject to Spatially Varying Ground Motions written by Jordan Michael Seawright and published by . This book was released on 2019 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report analyzed the dynamic response of a long, linear elastic concrete bridge subject to spatially varying ground displacements as well as consistent ground displacements. Specifically, the study investigated the bridge's response to consistent ground displacements at all supports (U-NW), ground displacements with wave passage effects and no soil profile variability (U-WP), and ground displacements with both wave passage effects and soil profile variability (V-WP). Time-history ground displacements were taken from recordings of the Loma Prieta, Duzce, and Chuetsu earthquakes. The two horizontal components of each earthquake time-history displacement record were applied to the bridge supports in the transverse and longitudinal directions. It was found that considering wave passage effects without soil profile variability, as compared with consistent ground displacements, significantly reduced the peak total energy of the system, as well as decreasing the maximum relative longitudinal displacements. The maximum relative transverse displacements were not significantly changed in the same case. It was also found that including both wave passage effects and soil profile variability (V-WP) generally resulted in larger maximum transverse relative displacements, across all earthquake time-histories tested. Similarly, it was found that using consistent ground displacements (U-NW) generally resulted in larger maximum longitudinal relative displacements, as well as larger peak total energy values.
Author : Bo Li
Publisher :
ISBN 13 :
Total Pages : 168 pages
Book Rating : 4.:/5 (89 download)
Download or read book Effects of Spatially Varying Ground Motions on Bridge Response written by Bo Li and published by . This book was released on 2014 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adjacent bridge structures can move relatively to each other in an earthquake, resulting in pounding or more severely, unseating. Pounding occurs when the relative closing movement is larger than the structural gap whereas girder unseating takes place due to the relative opening movements being larger than the seating length provided. Relative displacements arise from unequal fundamental frequencies of adjacent bridge structures, spatial variation of ground motions and different soil-structure interaction (SSI). The objective of this thesis is to investigate the influence of these factors, especially spatial variation of ground motions on the bridge response. To achieve the objective, a series of experiments were conducted on the bridge models made of polyvinylchloride (PVC) using either shake tables or inertial actuators. Ground motions of the soft soil, shallow soil and strong rock conditions based on the New Zealand design spectra were simulated. The ground motions of the soft soil condition were further classified as highly, intermediately and weakly correlated ground motions to account for coherency loss effect of excitation spatial variation. These experiments include testing a 1:125 scale bridge with three identical bridge segments to study the effect of spatially varying ground motions with pounding, testing the same model but with the footings on sand contained by rubber boxes to consider the effects of spatially varying ground motions and SSI with pounding, testing one of those bridge segments with movable abutments to investigate the effect of excitation spatial variation considering abutment excitation and pounding, testing a 1:125 scale bridge model with two identical bridge segments with artificial plastic hinges to study the effect of spatially varying ground motions on inelastic bridge response with pounding, and field testing a 1:22 scale bridge segment subjected to spatially varying ground motions to determine the minimum total gap of a modulus expansion joint required to avoid pounding. A total of 8660 tests were performed. Research found that spatial variation of ground motions can increase the relative displacement of adjacent bridge girders and pounding forces. Based on the experimental results, the New Zealand Transport Agency (NZTA) Bridge manual was reviewed. It was found that the current NZTA Bridge manual is unable to suggest sufficient minimum seating length to accommodate the measured relative opening displacements. A set of empirical equations is therefore proposed to calculate adequate minimum support seating lengths to prevent girder unseating.
Author : Mehdi Saiidi
Publisher :
ISBN 13 :
Total Pages : 118 pages
Book Rating : 4.:/5 (318 download)
Download or read book Inelastic Static and Dynamic Analysis of Short R/c Bridges Subjected to Lateral Loads written by Mehdi Saiidi and published by . This book was released on 1984 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Elham Maghsoudi Nia
Publisher : Springer Nature
ISBN 13 : 981970751X
Total Pages : 1074 pages
Book Rating : 4.8/5 (197 download)
Download or read book Advances in Civil Engineering Materials written by Elham Maghsoudi Nia and published by Springer Nature. This book was released on with total page 1074 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fang Yin Cheng
Publisher : Trans Tech Publications Ltd
ISBN 13 : 3038139211
Total Pages : 1400 pages
Book Rating : 4.0/5 (381 download)
Download or read book Computer-Aided Design, Manufacturing, Modeling and Simulation II written by Fang Yin Cheng and published by Trans Tech Publications Ltd. This book was released on 2012-12-13 with total page 1400 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings of the 2nd International Conference on Computer-Aided Design, Manufacturing, Modeling and Simulation (CDMMS 2012), held during the 21st to 23rd September 2012 in Chongqing, China, present original ideas and exciting new findings in disciplines such as CAD, CAM, Manufacturing, Mechanical Engineering, Modeling and Simulation.
Author : Y.K. Lin
Publisher : Springer Science & Business Media
ISBN 13 : 3642832520
Total Pages : 472 pages
Book Rating : 4.6/5 (428 download)
Download or read book Stochastic Approaches in Earthquake Engineering written by Y.K. Lin and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the preface: This volume is a collection of papers presented at the U.S. - Japan Joint Seminar on Stochastic Approaches in Earthquake Engineering held on May 6 and 7, 1987. The general theme of the two-day program was the application of probability and statistics to engineering problems related to strong ground motion. Within this general theme a great variety of subject matters were covered, including earthquake cataloging, ground motion modeling, system identification, failure mechanisms, response and reliability analyses, numerical techniques, and active control. The engineering systems considered included buildings, bridges and life-line networks.
Author : Holm Altenbach
Publisher : Springer
ISBN 13 : 3030212513
Total Pages : 263 pages
Book Rating : 4.0/5 (32 download)
Download or read book Contributions to Advanced Dynamics and Continuum Mechanics written by Holm Altenbach and published by Springer. This book was released on 2019-05-31 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book celebrates the 65th birthday of Prof. Alexander K. Belyaev—a well-known expert in the field of Dynamics of Mechanical Systems. In addition to reflecting Prof. Belyaev’s contributions, the papers gathered here address a range of current problems in Dynamics and Continuum Mechanics. All contributions were prepared by his friends and colleagues, and chiefly focus on theory and applications.
Author : Abbas Moustafa
Publisher : BoD – Books on Demand
ISBN 13 : 9535101234
Total Pages : 540 pages
Book Rating : 4.5/5 (351 download)
Download or read book Earthquake-Resistant Structures written by Abbas Moustafa and published by BoD – Books on Demand. This book was released on 2012-02-29 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with earthquake-resistant structures, such as, buildings, bridges and liquid storage tanks. It contains twenty chapters covering several interesting research topics written by researchers and experts in the field of earthquake engineering. The book covers seismic-resistance design of masonry and reinforced concrete structures to be constructed as well as safety assessment, strengthening and rehabilitation of existing structures against earthquake loads. It also includes three chapters on electromagnetic sensing techniques for health assessment of structures, post earthquake assessment of steel buildings in fire environment and response of underground pipes to blast loads. The book provides the state-of-the-art on recent progress in earthquake-resistant structures. It should be useful to graduate students, researchers and practicing structural engineers.
Author : Ahmad Radi Hawwari
Publisher :
ISBN 13 :
Total Pages : 304 pages
Book Rating : 4.3/5 (129 download)
Download or read book Suspension Bridge Response to Spatially Varying Ground Motion written by Ahmad Radi Hawwari and published by . This book was released on 1992 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James L. Martin
Publisher : CRC Press
ISBN 13 : 1138000868
Total Pages : 5742 pages
Book Rating : 4.1/5 (38 download)
Download or read book Hydro-Environmental Analysis written by James L. Martin and published by CRC Press. This book was released on 2013-12-04 with total page 5742 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on fundamental principles, Hydro-Environmental Analysis: Freshwater Environments presents in-depth information about freshwater environments and how they are influenced by regulation. It provides a holistic approach, exploring the factors that impact water quality and quantity, and the regulations, policy and management methods that are necessary to maintain this vital resource. It offers a historical viewpoint as well as an overview and foundation of the physical, chemical, and biological characteristics affecting the management of freshwater environments. The book concentrates on broad and general concepts, providing an interdisciplinary foundation. The author covers the methods of measurement and classification; chemical, physical, and biological characteristics; indicators of ecological health; and management and restoration. He also considers common indicators of environmental health; characteristics and operations of regulatory control structures; applicable laws and regulations; and restoration methods. The text delves into rivers and streams in the first half and lakes and reservoirs in the second half. Each section centers on the characteristics of those systems and methods of classification, and then moves on to discuss the physical, chemical, and biological characteristics of each. In the section on lakes and reservoirs, it examines the characteristics and operations of regulatory structures, and presents the methods commonly used to assess the environmental health or integrity of these water bodies. It also introduces considerations for restoration, and presents two unique aquatic environments: wetlands and reservoir tailwaters. Written from an engineering perspective, the book is an ideal introduction to the aquatic and limnological sciences for students of environmental science, as well as students of environmental engineering. It also serves as a reference for engineers and scientists involved in the management, regulation, or restoration of freshwater environments.
Author : Hong Hao
Publisher : CRC Press
ISBN 13 : 1351850202
Total Pages : 1935 pages
Book Rating : 4.3/5 (518 download)
Download or read book Mechanics of Structures and Materials XXIV written by Hong Hao and published by CRC Press. This book was released on 2019-08-08 with total page 1935 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanics of Structures and Materials: Advancements and Challenges is a collection of peer-reviewed papers presented at the 24th Australasian Conference on the Mechanics of Structures and Materials (ACMSM24, Curtin University, Perth, Western Australia, 6-9 December 2016). The contributions from academics, researchers and practising engineers from Australasian, Asia-pacific region and around the world, cover a wide range of topics, including: • Structural mechanics • Computational mechanics • Reinforced and prestressed concrete structures • Steel structures • Composite structures • Civil engineering materials • Fire engineering • Coastal and offshore structures • Dynamic analysis of structures • Structural health monitoring and damage identification • Structural reliability analysis and design • Structural optimization • Fracture and damage mechanics • Soil mechanics and foundation engineering • Pavement materials and technology • Shock and impact loading • Earthquake loading • Traffic and other man-made loadings • Wave and wind loading • Thermal effects • Design codes Mechanics of Structures and Materials: Advancements and Challenges will be of interest to academics and professionals involved in Structural Engineering and Materials Science.
Author : P.D. Spanos
Publisher : Springer Science & Business Media
ISBN 13 : 9401136920
Total Pages : 886 pages
Book Rating : 4.4/5 (11 download)
Download or read book Computational Stochastic Mechanics written by P.D. Spanos and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over a period of several years the field of probabilistic mechanics and com putational mechanics have progressed vigorously, but independently. With the advent of powerful computational hardware and the development of novel mechanical techniques, the field of stochastic mechanics has progressed in such a manner that the inherent uncertainty of quite complicated systems can be addressed. The first International Conference on Computational Stochastic Mechanics was convened in Corfu in September 1991 in an ef fort to provide a forum for the exchanging of ideas on the current status of computational methods as applied to stochastic mechanics and for identi fying needs for further research. The Conference covered both theoretical techniques and practical applications. The Conference also celebrated the 60th anniversary of the birthday of Dr. Masanobu Shinozuka, the Sollenberger Professor of Civil Engineering at Princeton University, whose work has contributed in such a great measure to the development of Computational Stochastic Mechanics. A brief sum mary of his career and achievements are given in the Dedication. This book comprises some of the papers presented at the meeting and cov ers sections on Theoretical Reliability Analysis; Damage Analysis; Applied Reliability Analysis; Theoretical Random Vibrations; Stochastic Finite Ele ment Concept; Fatigue and Fracture; Monte Carlo Simulations; Earthquake Engineering Applications; Materials; Applied Random Vibrations; Applied Stochastic Finite Element Analysis, and Flow Related Applications and Chaotic Dynamics. The Editors hope that the book will be a valuable contribution to the grow ing literature covering the field of Computational Stochastic Mechanics.
