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作者:

Li, Jinqiang (Li, Jinqiang.) | Zhong, Zilan (Zhong, Zilan.) | Bi, Kaiming (Bi, Kaiming.) | Hao, Hong (Hao, Hong.)

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摘要:

Seismic intensity measures (IMs), which are closely related to both earthquake hazards and structural responses, play a critical role in the performance-based earthquake engineering (PBEE) framework. This paper aims to investigate and define the most representative IMs for probabilistic seismic demand model (PSDM) for the longitudinal utility tunnel and internal pipeline system. Similar to the requirements by the Chinese Code for seismic design of urban rail transit structures, the utility tunnel in this study is assumed being buried in four typical engineering site classes for the analyses. Soil-tunnel-pipeline interactions are simulated using a doublebeam system resting on a nonlinear foundation. Soil-tunnel interaction, tunnel-pipeline interaction and joint connections are modeled as nonlinear springs with different mechanical properties. A series of 17 pairs of outcrop ground-motion records and 27 commonly used IMs are selected in the analyses. Engineering demand parameter ( EDP ) is defined based on the maximum joint opening and the maximum strain of the utility tunnel and internal pipeline, respectively. The selected IMs for predicting the seismic responses of tunnel-pipeline systems are tested using different criteria, i.e., correction, efficiency, practicality, and proficiency. The final decision-making procedure employs a fuzzy multi-criteria decision method. The numerical results indicate that: (1) The velocity-related IMs are the most representative IMs based on the four criteria for structures buried in four sites of different conditions; (2) The optimal seismic IMs vary with different criteria, site classes and structure types. According to the fuzzy multi-criteria decision approach, optimal IMs for the tunnel-pipeline system are PGV , PGV , EPV and HI for site classes I - IV, respectively. The proposed optimal IMs can be utilized to construct seismic fragility curves of utility tunnel, internal pipeline and tunnel-pipeline systems in four different site classes.

关键词:

Probabilistic seismic demand model Intensity measure Internal pipeline Burial sites Utility tunnel

作者机构:

  • [ 1 ] [Li, Jinqiang]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 2 ] [Zhong, Zilan]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 3 ] [Bi, Kaiming]Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon, Hong Kong 100872, Peoples R China
  • [ 4 ] [Hao, Hong]Guangzhou Univ, Earthquake Engn Res & Test Ctr, Guangdong Prov Key Lab Earthquake Engn & Appl Tech, Guangzhou 510006, Peoples R China
  • [ 5 ] [Hao, Hong]Curtin Univ, Ctr Infrastruct Monitoring & Protect, Sch Civil & Mech Engn, Kent St, Bentley, WA 6102, Australia

通讯作者信息:

  • [Zhong, Zilan]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, 100 Pingleyuan, Beijing 100124, Peoples R China;;

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来源 :

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY

ISSN: 0886-7798

年份: 2024

卷: 148

6 . 9 0 0

JCR@2022

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SCOPUS被引频次: 4

ESI高被引论文在榜: 0 展开所有

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