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作者:

Zhang, Chao (Zhang, Chao.) | Lu, Jian-bing (Lu, Jian-bing.) | Jia, Hong-yu (Jia, Hong-yu.) | Lai, Zhi-chao (Lai, Zhi-chao.) | Li, Xu (Li, Xu.) | Wang, Pi-guang (Wang, Pi-guang.) (学者:王丕光)

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摘要:

Observations from several earthquakes indicate that near-fault (NF) ground motions have a significant influence on the seismic response of structures. However, existing studies have only discussed the influence of a certain NF characteristic on the seismic response, rather than systematically discussing and comparing the influence of different NF characteristics. Furthermore, current research is only suitable for a specific structure while the influence of NF characteristics on structures with different dynamic characteristics has not been revealed. As an important lifeline project, the safety of a cable-stayed bridge (CSB) during earthquakes is of great concern. Therefore, this paper investigates the influence of NF ground motions on the seismic response of CSB. Firstly, three major characteristics (i.e., the hanging wall effect, rupture directivity effect and high velocity pulse) of NF ground motions are analyzed using NF records of the Chi-Chi earthquake. Secondly, a finite element (FEM) model for modeling a prototype CSB is developed and benchmarked. Then, the seismic responses of the prototype CSB subjected to NF ground motions with different characteristics are analyzed using the benchmarked FEM model. The analyses show that hanging wall effect, rupture directivity effect, and high velocity pulse affect the seismic demand of the CSB to varying degrees. Furthermore, the influences of NF characteristics on the displacement response of CSBs with different fundamental periods are investigated using SDOF systems. The analysis results show that different NF characteristics have various influences on the displacement response of CSBs with different fundamental periods.

关键词:

Rupture directivity effect Velocity pulse NF characteristics Cable-stayed bridge (CSB) Hanging wall effect

作者机构:

  • [ 1 ] [Zhang, Chao]Fuzhou Univ, Coll Civil Engn, Fuzhou 350116, Peoples R China
  • [ 2 ] [Lu, Jian-bing]Fuzhou Univ, Coll Civil Engn, Fuzhou 350116, Peoples R China
  • [ 3 ] [Lai, Zhi-chao]Fuzhou Univ, Coll Civil Engn, Fuzhou 350116, Peoples R China
  • [ 4 ] [Li, Xu]Fuzhou Univ, Coll Civil Engn, Fuzhou 350116, Peoples R China
  • [ 5 ] [Jia, Hong-yu]Southwest Jiaotong Univ, Sch Civil Engn, Chengdu 610031, Peoples R China
  • [ 6 ] [Zhang, Chao]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn MOE, Beijing 100124, Peoples R China
  • [ 7 ] [Wang, Pi-guang]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn MOE, Beijing 100124, Peoples R China

通讯作者信息:

  • [Jia, Hong-yu]Southwest Jiaotong Univ, Sch Civil Engn, Chengdu 610031, Peoples R China

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来源 :

BULLETIN OF EARTHQUAKE ENGINEERING

ISSN: 1570-761X

年份: 2020

期: 14

卷: 18

页码: 6375-6403

4 . 6 0 0

JCR@2022

ESI学科: GEOSCIENCES;

ESI高被引阀值:99

被引次数:

WoS核心集被引频次: 21

SCOPUS被引频次: 24

ESI高被引论文在榜: 0 展开所有

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