Results 11 to 20 of about 5,310 (260)
NGA-West2地震动预测模型对速度脉冲型地震动各分量的适用性
Dizhen xuebao, 2023 鉴于传统的地震动预测模型未考虑速度脉冲的影响，可能会低估近断层区域的地震风险，而新一代NGA-West2地震动预测模型对速度脉冲型地震动的适用性有待研究。首先，收集了2013年以来的近断层地震动记录，在充分考虑脉冲方向的不确定性条件下，基于小波方法定量地识别出速度脉冲记录，形成了最新的速度脉冲记录数据库；然后，利用小波提取出速度脉冲记录中的长周期脉冲信号，基于偏差参数分析方法，定量地研究NGA-West2地震动预测模型分别对速度脉冲原始记录和提取长周期脉冲后的残余记录的适用性。研究结果显示，NGA ...
Xiaofen Zhao +3 more
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Seismic Energy Response of SDOF Systems Subjected to Long-Period Ground Motion Records
Advances in Civil Engineering, 2021 To provide an important reference for the energy-based seismic design of long-period structures, the elastoplastic dynamic analysis program is employed to study the seismic energy response of single-degree-of-freedom (SDOF) systems under two types of ...
Yu Cheng +4 more
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Applied Sciences, 2023 The objective of this study is to present a novel fragility analysis method that combines principal component analysis (PCA) and the K-means clustering algorithm for a probability assessment of seismic damage in high-pier bridges undergoing pulse-like ...
Jingang Zhao +3 more
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Seismic performance of frame‐bent structures subjected to near‐fault ground motions
The Journal of Engineering, 2021 Reinforced concrete frame‐bent structures are one of the structural forms commonly used in industrial factory buildings. In order to study the seismic behaviour of frame‐bent structures located near fault areas, eight pulse‐like, eight non‐pulse near ...
Shuyun Zhang +3 more
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Determining the Optimal Scalar Intensity Measure of Floor Communication Towers
Shock and Vibration, 2022 Various structural types and ground motion characteristics lead to distinct intensity measures of structural seismic performance. For the lattice high-rise steel structure of communication towers, determining the intensity measures to adjust ground ...
Bo Li +4 more
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Inelastic displacement ratio for rocking buildings subjected to far-field and near-field pulse-like ground motions [PDF]
Journal of Structural and Construction Engineering, 2019 Self centering rocking buildings are capable of reducing permanent damage and concentrating damage to replaceable energy dissipation devices. This paper aims to calculate inelastic displacement ratio for self centering rocking buildings under far field ...
Navid Rahgozar +1 more
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DESIGN RESPONSE SPECTRA FOR PULSE-LIKE GROUND MOTIONS
Journal of Structural and Construction Engineering (Transactions of AIJ), 2010 In recent inland shallow earthquakes, pulse-like ground motions have been observed which subsequently caused severe damage to buildings. However, the response of buildings to pulse-like ground motions has not been sufficiently characterized yet. In this study, we investigate the effect of pulse-like ground motions on the design of structures and define
SUZUKI, Kyohei +3 more
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Seismic Fragility Assessment of Steel SMRF Structures under Various Types of Near and Far Fault Ground Motions [PDF]
Journal of Rehabilitation in Civil Engineering, 2019 In this paper, the seismic collapse probability of special steel moment-resisting frame (SSMRF) structures, designed to 4th edition of Iranian seismic design code, under near fault pulse-like and far fault ordinary ground motions is evaluated through ...
Morteza Razi +3 more
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Shaking Table Test of a Base-Isolated Frame Structure under Near-Fault Ground Motions
Buildings, 2022 A five-story moment frame structural model with a base isolation system was tested on a shaking table. The isolation system comprised both linear natural rubber bearing (LNR) and nonlinear viscous dampers (NLVDs).
Qing Lyu +7 more
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Frontiers in Built Environment, 2023 The response of structures under pulse-like ground motions is characterized by the large amount of energy input in a few cycles. Consequently, structures with insufficient strength may suffer severe damage owing to excessive deformation.
Kenji Fujii
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