In recent years, precast segmental concrete bridge columns became prevalent because of the benefits of accelerated construction, low environmental impact, high quality and low life cycle costs. The lack of a detailed ...In recent years, precast segmental concrete bridge columns became prevalent because of the benefits of accelerated construction, low environmental impact, high quality and low life cycle costs. The lack of a detailed configuration and appropriate design procedure to ensure a comparable performance with monolithic construction has impeded this structural system from being widely used in areas of high seismicity. In this study, precast segmental bridge column cyclic loading tests were conducted to investigate the performance of unbonded post-tensioned segmental bridge columns. One monolithic and two precast segmental columns were tested. The preeast segmental column exhibited minor damage and small residual displacement after the maximum 7% cyclic drift; energy dissipation （ED） can be enhanced byadding ED bars. The experimental results were modeled by a simplified pushover method （SPOM）, as well as a fiber model （FIBM） finite element method. Forty-five cases of columns with different aspect ratios, axial load ratios and ED bar ratios were analyzed with the SPOM and FIBM, respectively. Using these parametric results, a simplified design method was suggested by regressive analysis. Satisfactory correlation was found between the experimental results and the simplified design method for preeast segmental columns with different design parameters.展开更多
This paper studies the dynamic responses of SDOF system under pulse-dominant excitations.The purpose of the study is to prepare for scrutiny of some near-field pulse-dominantground motions and their potential to cause...This paper studies the dynamic responses of SDOF system under pulse-dominant excitations.The purpose of the study is to prepare for scrutiny of some near-field pulse-dominantground motions and their potential to cause structural damage.Extending the single pulse dynamics,we consider the effect of pulse sequences.This kind of excitation was particularly obvious in some of previous earthquakes such as Northridge (1994) and Chi-Chi (1995).Based on the duration, peak and rise and decay era of the main pulse as well as its relationship with the predecessor and successor pulses,we propose a classification for the pulse sequences.Consequent studies have been canied out for acceleration,velocity and displacement response spectra of the main pulse with either a predecessor or a successor pulse.The analysis also includes general response behaviors in different fundamental period segments and special aspects of response at certain points (e.g.,the corresponding peak points).展开更多
The current AASHTO load and resistance factor design （LRFD） guidelines are formulated based on bridge reliability, which interprets traditional design safety factors into more rigorously deduced factors based on the...The current AASHTO load and resistance factor design （LRFD） guidelines are formulated based on bridge reliability, which interprets traditional design safety factors into more rigorously deduced factors based on the theory of probability. This is a major advancement in bridge design specifications. However, LRFD is only calibrated for dead and live loads. In cases when extreme loads are significant, they need to be individually assessed. Combining regular loads with extreme loads has been a major challenge, mainly because the extreme loads are time variables and cannot be directly combined with time invariant loads to formulate the probability of structural failure. To overcome these difficulties, this paper suggests a methodology of comprehensive reliability, by introducing the concept of partial failure probability to separate the loads so that each individual load combination under a certain condition can be approximated as time invariant. Based on these conditions, the extreme loads （also referred to as multiple hazard or MH loads） can be broken down into single effects. In Part II of this paper, a further breakdown of these conditional occurrence probabilities into pure conditions is discussed by using a live truck and earthquake loads on a bridge as an example. There are three major steps in establishing load factors from MH load distributions： （1） formulate the failure probabilities; （2） normalize various load distributions; and （3） establish design limit state equations. This paper describes the formulation of the failure probabilities of single and combined loads.展开更多
In the U.S., the current Load and Resistance Factor Design （LRFD） Specifications for highway bridges is a reliability-based formulation that considers failure probabilities of bridge components due to the actions of...In the U.S., the current Load and Resistance Factor Design （LRFD） Specifications for highway bridges is a reliability-based formulation that considers failure probabilities of bridge components due to the actions of typical dead load and frequent vehicular loads. Various extreme load effects, such as earthquake and vessel collision, are on the same reliability-based platform. Since these extreme loads are time variables, combining them with not considered frequent. non- extreme loads is a significant challenge. The number of design limit state equations based on these failure probabilities can be unrealistically large and unnecessary from the view point of practical applications. Based on the opinion of AASHTO State Bridge Engineers, many load combinations are insignificant in their states. This paper describes the formulation of a criterion to include only the necessary load combinations to establish the design limit states. This criterion is established by examining the total failure probabilities for all possible time-invariant and time varying load combinations and breaking them down into partial terms. Then, important load combinations can be readily determined quantitatively,展开更多
The Federal Highway Administration (FHWA) sponsored a large,multi-year project conducted by the Multidisciplinary Center for Earthquake Engineering Research (MCEER) titled'Seismic Vulnerability of New Highway Cons...The Federal Highway Administration (FHWA) sponsored a large,multi-year project conducted by the Multidisciplinary Center for Earthquake Engineering Research (MCEER) titled'Seismic Vulnerability of New Highway Construction'(MCEER Project 112),which was completed in 1998.MCEER coordinated the work of many researchers,who performed studies on the seismic design and vulnerability analysis of highway bridges,tunnels,and retaining structures. Extensive research was conducted to provide revisions and improvements to current design and detailing approaches and national design specifications for highway bridges.The program included both analytical and experimental studies,and addressed seismic hazard exposure and ground motion input for the U.S.highway system;foundation design and soil behavior: structural importance,analysis,and response:structural design issues and details;and structural design criteria.展开更多
This paper is the first in a two-part series that discusses the principal axes of M-DOF structures subjected to static and dynamic loads. The primary purpose of this series is to understand the magnitude of the dynami...This paper is the first in a two-part series that discusses the principal axes of M-DOF structures subjected to static and dynamic loads. The primary purpose of this series is to understand the magnitude of the dynamic response of structures to enable better design of structures and control modification devices/systems. Under idealized design conditions, the structural responses are obtained by using single direction input ground motions in the direction of the intended control devices/systems, and by assuming that the responses of the structure is decoupleable in three mutually perpendicular directions. This standard practice has been applied to both new and retrofitted structures using various seismic protective systems. Very limited information is available on the effects of neglecting the impact of directional couplings (cross effects - of which torsion is a component) of the dynamic response of structures. In order to quantify such effects, it is necessary to examine the principal axes of structures under both static and dynamic loading. This first paper deals with quantitative definitions of principal axes and “cross effects” of three-dimensional structures under static load by using linear algebra. It shows theoretically that, for three-dimensional structures, such principal axes rarely exist. Under static loading conditions, the cross effect is typically small and negligible from the viewpoint of engineering applications. However, it provides the theoretical base for subsequent quantification of the response couplings under dynamic loads, which is reported in part II of this series.展开更多
As the Journal of Earthquake Engineering and Engineering Vibration enters its fourth year of publication, we believethe first six issues are on the right track toward promoting scientific exchange between China, the U...As the Journal of Earthquake Engineering and Engineering Vibration enters its fourth year of publication, we believethe first six issues are on the right track toward promoting scientific exchange between China, the United States and theinternational community. Our contributors have hailed from many countries throughout the world including Canada,China, Greece, Italy, India, Japan, Korea, New Zealand, Turkey and the United States.展开更多
Based on Buckingham＇s π-Theorem, dimensional analysis has achieved considerable success over the past near-century. Model testing has long been a powerful tool in both scientific studies and engineering applications...Based on Buckingham＇s π-Theorem, dimensional analysis has achieved considerable success over the past near-century. Model testing has long been a powerful tool in both scientific studies and engineering applications. However, the prototype objects are becoming more and more complicated nowadays, and many of the prototype systems can contain several sub-systems. The conventional theories on model-prototype similarity and dimensional analysis have only limited application since the π-Theorem itself does not distinguish between the original system and subsystems. This is particularly true in the field of structural dynamics, where the structure is often modeled as a multi-degree-of-freedom system. In this paper, we attempt to show that, if a system can be decoupled into several nontrivial subsystems, then, in each subsystem, the number of π-terms will be reduced and therefore simplify the model testing. On the other hand, if a system cannot be decoupled into subsystems, then using model testing with reduced π-term analysis, both experimentally and theoretically, may introduce severe errors.展开更多
Dear Members of the Editorial Board,Contributors and Friends of the journal,This issue of Earthquake Engineering and Engineering Vibration(Vol.22,No.1)includes five papers in a special section entitled“Computer Visio...Dear Members of the Editorial Board,Contributors and Friends of the journal,This issue of Earthquake Engineering and Engineering Vibration(Vol.22,No.1)includes five papers in a special section entitled“Computer Vision Empowering Earthquake Engineering and Engineering Vibration”.The special section aims to promote recent advances and generate discussions in computer vision as applied to earthquake engineering and engineering vibration.We thank vip editors,Prof.Jian Li of The University of Kansas,USA,Prof.Vedhus Hoskere of University of Houston,USA and Prof.Yasutaka Narazaki,Zhejiang University/University of Illinois at Urbana-Champaign Institute,Zhejiang University,China,for their hard work and dedication.We also want to thank the managing executive editor,Prof.Billie F.Spencer of University of Illinois at Urbana-Champaign,for his invaluable guidance.展开更多
Dear Members of the Editorial Board, Contributors and Friends of the journal,This issue of Earthquake Engineering and Engineering Vibration(Vol. 23, No. 2) includes five papers in a special section entitled “Wave-Bas...Dear Members of the Editorial Board, Contributors and Friends of the journal,This issue of Earthquake Engineering and Engineering Vibration(Vol. 23, No. 2) includes five papers in a special section entitled “Wave-Based Nondestructive Testing and Evaluation Methods in Civil Engineering”. The special section aims to present recent developments and applications of wave-based nondestructive testing and evaluation research. We thank the vip editors, Prof. Nenad Gucunski of Rutgers University, USA, Prof. Lin Shibin of Jianghan University, China and Prof. Chen Hongbing, University of Science and Technology Beijing, China, for their hard work and dedication.展开更多
Dear Members of the Editorial Board,Contributors and Friends of the journal,This issue of Earthquake Engineering and Engineering Vibration(Vol.22,No.2)includes seven papers in a special section entitled“Computer Visi...Dear Members of the Editorial Board,Contributors and Friends of the journal,This issue of Earthquake Engineering and Engineering Vibration(Vol.22,No.2)includes seven papers in a special section entitled“Computer Vision Empowering Earthquake Engineering and Engineering Vibration”.The special section aims to promote recent advances and generate discussions in computer vision as applied to earthquake engineering and engineering vibration.We thank vip editors,Prof.Jian Li of The University of Kansas,USA,Prof.Vedhus Hoskere of University of Houston,USA and Prof.Yasutaka Narazaki,Zhejiang University/University of Illinois at UrbanaChampaign Institute,Zhejiang University,China,for their hard work and dedication.展开更多
Dear Members of the Editorial Board,Contributors and Friends of the journal,This issue of Earthquake Engineering and Engineering Vibration(Vol.20,No.1)includes two papers in a special section“Recent progress in evalu...Dear Members of the Editorial Board,Contributors and Friends of the journal,This issue of Earthquake Engineering and Engineering Vibration(Vol.20,No.1)includes two papers in a special section“Recent progress in evaluation and improvement on seismic resilience of engineering structures”.The special section aims to collect state-of-the-art and state-of-the-practice research findings on the latest developments and challenges in seismic resilience evaluation.We thank vip editors Professor Wang Tao of the Institute of Engineering Mechanics,China Earthquake Administration and Professor Gian Paolo Cimellaro of the Politecnico di Torino,Italy,for their invaluable guidance.展开更多
Dear Members of the Editorial Board, Contributors and Friends of the journal,This issue of Earthquake Engineering and Engineering Vibration(Vol. 19, No. 3) includes two papers in a special section "Recent progres...Dear Members of the Editorial Board, Contributors and Friends of the journal,This issue of Earthquake Engineering and Engineering Vibration(Vol. 19, No. 3) includes two papers in a special section "Recent progress in evaluation and improvement on seismic resilience of engineering structures".展开更多
Dear Members of the Editorial Board, Contributors and Friends,2018 is the tenth anniversary of the Wenchuan earthquake disaster. To commemorate the Wenchuan earthquake disaster, the journal of Earthquake Engineering a...Dear Members of the Editorial Board, Contributors and Friends,2018 is the tenth anniversary of the Wenchuan earthquake disaster. To commemorate the Wenchuan earthquake disaster, the journal of Earthquake Engineering and Engineering Vibration （EEEV） will publish special sections with invited papers in the issues of 2018. We sincerely appreciate the contributions from the following experts： Professor Masayoshi NAKASHIMA, Professor Hongnan LI, and Professor Ying ZHOU.展开更多
Dear JEEEV Contributors, Readers and Friends,This current issue includes a special section of six papers on the subject of ＂State-of-the-art of hybrid testing method＂. We thank the vip editors Prof. Gilberto Mosqu...Dear JEEEV Contributors, Readers and Friends,This current issue includes a special section of six papers on the subject of ＂State-of-the-art of hybrid testing method＂. We thank the vip editors Prof. Gilberto Mosqueda of the University of California, San Diego and Prof. Wang Tao of the Institute of Engineering Mechanics, China Earthquake Administration, and the managing executive editor Prof. Billie F. Spencer for their invaluable guidance.展开更多
Dear Members of Editorial Board.Contributors and Friends of the journal of EEHV,This special issue on the"State-of-the-art and Future Challenges of Earthquake Engineering"is dedicated to today’s young earth...Dear Members of Editorial Board.Contributors and Friends of the journal of EEHV,This special issue on the"State-of-the-art and Future Challenges of Earthquake Engineering"is dedicated to today’s young earthquake engineering researchers by describing certain insight of research opportunities in earthquake engineering.We express our sincere appreciation to the following individuals:Professor Gian Michele CALVI,Professor Kuo-Chun展开更多
Dear Editorial Board Members, Contributors and Friends of EEEV, As co-editors of Earthquake Engineering and Engineering Vibration, we regularly consider ideas and approaches to better serve the earthquake engineering ...Dear Editorial Board Members, Contributors and Friends of EEEV, As co-editors of Earthquake Engineering and Engineering Vibration, we regularly consider ideas and approaches to better serve the earthquake engineering community. This message is to seek your comments and suggestions on some new ideas that we would like to implement. These are as follows：展开更多
Dear Contributors, Readers and Friends：This issue includes six papers on post-Wenchuan earthquake studies, representing just a small sample of the vast number of lessons learned from that devastating event in Sichuan...Dear Contributors, Readers and Friends：This issue includes six papers on post-Wenchuan earthquake studies, representing just a small sample of the vast number of lessons learned from that devastating event in Sichuan, China. Since 2008, the world has experienced several destructive earthquakes such as those occurred in New Zealand, Haiti, Chile, and Japan. Reconnaissance reports on these events have indicated observations on ground motion characteristics that deserve special consideration by researchers.展开更多
基金National Natural Science Foundation of China under Grants Nos.51208268 and 51178429K.C.Wong Magna Fund in Ningbo University+1 种基金Transportation Science and Technology Project of Ningbo City under Grant No.201507Natural Science Foundation of Ningbo City under Grant No.2015A610293
文摘In recent years, precast segmental concrete bridge columns became prevalent because of the benefits of accelerated construction, low environmental impact, high quality and low life cycle costs. The lack of a detailed configuration and appropriate design procedure to ensure a comparable performance with monolithic construction has impeded this structural system from being widely used in areas of high seismicity. In this study, precast segmental bridge column cyclic loading tests were conducted to investigate the performance of unbonded post-tensioned segmental bridge columns. One monolithic and two precast segmental columns were tested. The preeast segmental column exhibited minor damage and small residual displacement after the maximum 7% cyclic drift; energy dissipation （ED） can be enhanced byadding ED bars. The experimental results were modeled by a simplified pushover method （SPOM）, as well as a fiber model （FIBM） finite element method. Forty-five cases of columns with different aspect ratios, axial load ratios and ED bar ratios were analyzed with the SPOM and FIBM, respectively. Using these parametric results, a simplified design method was suggested by regressive analysis. Satisfactory correlation was found between the experimental results and the simplified design method for preeast segmental columns with different design parameters.
基金US NSF Under Grant No.CMS-0202846National Natural Science Foundation of China Under Grant No.50278092
文摘This paper studies the dynamic responses of SDOF system under pulse-dominant excitations.The purpose of the study is to prepare for scrutiny of some near-field pulse-dominantground motions and their potential to cause structural damage.Extending the single pulse dynamics,we consider the effect of pulse sequences.This kind of excitation was particularly obvious in some of previous earthquakes such as Northridge (1994) and Chi-Chi (1995).Based on the duration, peak and rise and decay era of the main pulse as well as its relationship with the predecessor and successor pulses,we propose a classification for the pulse sequences.Consequent studies have been canied out for acceleration,velocity and displacement response spectra of the main pulse with either a predecessor or a successor pulse.The analysis also includes general response behaviors in different fundamental period segments and special aspects of response at certain points (e.g.,the corresponding peak points).
基金Federal Highway Administration at the University at Buffalo Under Contract Number DTFH61-08-C-00012
文摘The current AASHTO load and resistance factor design （LRFD） guidelines are formulated based on bridge reliability, which interprets traditional design safety factors into more rigorously deduced factors based on the theory of probability. This is a major advancement in bridge design specifications. However, LRFD is only calibrated for dead and live loads. In cases when extreme loads are significant, they need to be individually assessed. Combining regular loads with extreme loads has been a major challenge, mainly because the extreme loads are time variables and cannot be directly combined with time invariant loads to formulate the probability of structural failure. To overcome these difficulties, this paper suggests a methodology of comprehensive reliability, by introducing the concept of partial failure probability to separate the loads so that each individual load combination under a certain condition can be approximated as time invariant. Based on these conditions, the extreme loads （also referred to as multiple hazard or MH loads） can be broken down into single effects. In Part II of this paper, a further breakdown of these conditional occurrence probabilities into pure conditions is discussed by using a live truck and earthquake loads on a bridge as an example. There are three major steps in establishing load factors from MH load distributions： （1） formulate the failure probabilities; （2） normalize various load distributions; and （3） establish design limit state equations. This paper describes the formulation of the failure probabilities of single and combined loads.
基金Federal Highway Administration at the University at Buffalo under Contract No.DTFH61-08-C-00012
文摘In the U.S., the current Load and Resistance Factor Design （LRFD） Specifications for highway bridges is a reliability-based formulation that considers failure probabilities of bridge components due to the actions of typical dead load and frequent vehicular loads. Various extreme load effects, such as earthquake and vessel collision, are on the same reliability-based platform. Since these extreme loads are time variables, combining them with not considered frequent. non- extreme loads is a significant challenge. The number of design limit state equations based on these failure probabilities can be unrealistically large and unnecessary from the view point of practical applications. Based on the opinion of AASHTO State Bridge Engineers, many load combinations are insignificant in their states. This paper describes the formulation of a criterion to include only the necessary load combinations to establish the design limit states. This criterion is established by examining the total failure probabilities for all possible time-invariant and time varying load combinations and breaking them down into partial terms. Then, important load combinations can be readily determined quantitatively,
基金the Federal Highway Administration under contract number DTFH61-92-C-00112.
文摘The Federal Highway Administration (FHWA) sponsored a large,multi-year project conducted by the Multidisciplinary Center for Earthquake Engineering Research (MCEER) titled'Seismic Vulnerability of New Highway Construction'(MCEER Project 112),which was completed in 1998.MCEER coordinated the work of many researchers,who performed studies on the seismic design and vulnerability analysis of highway bridges,tunnels,and retaining structures. Extensive research was conducted to provide revisions and improvements to current design and detailing approaches and national design specifications for highway bridges.The program included both analytical and experimental studies,and addressed seismic hazard exposure and ground motion input for the U.S.highway system;foundation design and soil behavior: structural importance,analysis,and response:structural design issues and details;and structural design criteria.
基金funded through a contract from the Federal Highway Administration (Contract No.ETFH61-98-C-00094)a grant from the Earthquake Education Research Centers Program of the National Science Foundation to the Multidisciplinary Center for Earthquake Engineering Research (Grant No.ECC-9701471).
文摘This paper is the first in a two-part series that discusses the principal axes of M-DOF structures subjected to static and dynamic loads. The primary purpose of this series is to understand the magnitude of the dynamic response of structures to enable better design of structures and control modification devices/systems. Under idealized design conditions, the structural responses are obtained by using single direction input ground motions in the direction of the intended control devices/systems, and by assuming that the responses of the structure is decoupleable in three mutually perpendicular directions. This standard practice has been applied to both new and retrofitted structures using various seismic protective systems. Very limited information is available on the effects of neglecting the impact of directional couplings (cross effects - of which torsion is a component) of the dynamic response of structures. In order to quantify such effects, it is necessary to examine the principal axes of structures under both static and dynamic loading. This first paper deals with quantitative definitions of principal axes and “cross effects” of three-dimensional structures under static load by using linear algebra. It shows theoretically that, for three-dimensional structures, such principal axes rarely exist. Under static loading conditions, the cross effect is typically small and negligible from the viewpoint of engineering applications. However, it provides the theoretical base for subsequent quantification of the response couplings under dynamic loads, which is reported in part II of this series.
文摘As the Journal of Earthquake Engineering and Engineering Vibration enters its fourth year of publication, we believethe first six issues are on the right track toward promoting scientific exchange between China, the United States and theinternational community. Our contributors have hailed from many countries throughout the world including Canada,China, Greece, Italy, India, Japan, Korea, New Zealand, Turkey and the United States.
文摘Based on Buckingham＇s π-Theorem, dimensional analysis has achieved considerable success over the past near-century. Model testing has long been a powerful tool in both scientific studies and engineering applications. However, the prototype objects are becoming more and more complicated nowadays, and many of the prototype systems can contain several sub-systems. The conventional theories on model-prototype similarity and dimensional analysis have only limited application since the π-Theorem itself does not distinguish between the original system and subsystems. This is particularly true in the field of structural dynamics, where the structure is often modeled as a multi-degree-of-freedom system. In this paper, we attempt to show that, if a system can be decoupled into several nontrivial subsystems, then, in each subsystem, the number of π-terms will be reduced and therefore simplify the model testing. On the other hand, if a system cannot be decoupled into subsystems, then using model testing with reduced π-term analysis, both experimentally and theoretically, may introduce severe errors.
文摘Dear Members of the Editorial Board,Contributors and Friends of the journal,This issue of Earthquake Engineering and Engineering Vibration(Vol.22,No.1)includes five papers in a special section entitled“Computer Vision Empowering Earthquake Engineering and Engineering Vibration”.The special section aims to promote recent advances and generate discussions in computer vision as applied to earthquake engineering and engineering vibration.We thank vip editors,Prof.Jian Li of The University of Kansas,USA,Prof.Vedhus Hoskere of University of Houston,USA and Prof.Yasutaka Narazaki,Zhejiang University/University of Illinois at Urbana-Champaign Institute,Zhejiang University,China,for their hard work and dedication.We also want to thank the managing executive editor,Prof.Billie F.Spencer of University of Illinois at Urbana-Champaign,for his invaluable guidance.
文摘Dear Members of the Editorial Board, Contributors and Friends of the journal,This issue of Earthquake Engineering and Engineering Vibration(Vol. 23, No. 2) includes five papers in a special section entitled “Wave-Based Nondestructive Testing and Evaluation Methods in Civil Engineering”. The special section aims to present recent developments and applications of wave-based nondestructive testing and evaluation research. We thank the vip editors, Prof. Nenad Gucunski of Rutgers University, USA, Prof. Lin Shibin of Jianghan University, China and Prof. Chen Hongbing, University of Science and Technology Beijing, China, for their hard work and dedication.
文摘Dear Members of the Editorial Board,Contributors and Friends of the journal,This issue of Earthquake Engineering and Engineering Vibration(Vol.22,No.2)includes seven papers in a special section entitled“Computer Vision Empowering Earthquake Engineering and Engineering Vibration”.The special section aims to promote recent advances and generate discussions in computer vision as applied to earthquake engineering and engineering vibration.We thank vip editors,Prof.Jian Li of The University of Kansas,USA,Prof.Vedhus Hoskere of University of Houston,USA and Prof.Yasutaka Narazaki,Zhejiang University/University of Illinois at UrbanaChampaign Institute,Zhejiang University,China,for their hard work and dedication.
文摘Dear Members of the Editorial Board,Contributors and Friends of the journal,This issue of Earthquake Engineering and Engineering Vibration(Vol.20,No.1)includes two papers in a special section“Recent progress in evaluation and improvement on seismic resilience of engineering structures”.The special section aims to collect state-of-the-art and state-of-the-practice research findings on the latest developments and challenges in seismic resilience evaluation.We thank vip editors Professor Wang Tao of the Institute of Engineering Mechanics,China Earthquake Administration and Professor Gian Paolo Cimellaro of the Politecnico di Torino,Italy,for their invaluable guidance.
文摘Dear Members of the Editorial Board, Contributors and Friends of the journal,This issue of Earthquake Engineering and Engineering Vibration(Vol. 19, No. 3) includes two papers in a special section "Recent progress in evaluation and improvement on seismic resilience of engineering structures".
文摘Dear Members of the Editorial Board, Contributors and Friends,2018 is the tenth anniversary of the Wenchuan earthquake disaster. To commemorate the Wenchuan earthquake disaster, the journal of Earthquake Engineering and Engineering Vibration （EEEV） will publish special sections with invited papers in the issues of 2018. We sincerely appreciate the contributions from the following experts： Professor Masayoshi NAKASHIMA, Professor Hongnan LI, and Professor Ying ZHOU.
文摘Dear JEEEV Contributors, Readers and Friends,This current issue includes a special section of six papers on the subject of ＂State-of-the-art of hybrid testing method＂. We thank the vip editors Prof. Gilberto Mosqueda of the University of California, San Diego and Prof. Wang Tao of the Institute of Engineering Mechanics, China Earthquake Administration, and the managing executive editor Prof. Billie F. Spencer for their invaluable guidance.
文摘Dear Members of Editorial Board.Contributors and Friends of the journal of EEHV,This special issue on the"State-of-the-art and Future Challenges of Earthquake Engineering"is dedicated to today’s young earthquake engineering researchers by describing certain insight of research opportunities in earthquake engineering.We express our sincere appreciation to the following individuals:Professor Gian Michele CALVI,Professor Kuo-Chun
文摘Dear Editorial Board Members, Contributors and Friends of EEEV, As co-editors of Earthquake Engineering and Engineering Vibration, we regularly consider ideas and approaches to better serve the earthquake engineering community. This message is to seek your comments and suggestions on some new ideas that we would like to implement. These are as follows：
文摘Dear Contributors, Readers and Friends：This issue includes six papers on post-Wenchuan earthquake studies, representing just a small sample of the vast number of lessons learned from that devastating event in Sichuan, China. Since 2008, the world has experienced several destructive earthquakes such as those occurred in New Zealand, Haiti, Chile, and Japan. Reconnaissance reports on these events have indicated observations on ground motion characteristics that deserve special consideration by researchers.
