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Author:

Zhuang, Haiyang (Zhuang, Haiyang.) | Xu, Zigang (Xu, Zigang.) | Yang, Jing (Yang, Jing.) | Chen, Su (Chen, Su.) (Scholars:陈苏) | Zhang, Ji (Zhang, Ji.) | Chen, Guoxing (Chen, Guoxing.)

Indexed by:

EI Scopus SCIE

Abstract:

The model test method is crucial for studying the seismic performance of underground structures. Presently, model tests for the seismic response of underground structures are primarily performed with 1-g and N-g centrifuge shaking table. The 1-g shaking table model test is limited by the stress similarity in the soil-structure interaction system and cannot reproduce the seismic damage process and extent of the underground structure. The small table size of the N-g centrifuge model test makes it difficult to reflect the spatial effects of the seismic response of large underground structures. Seeking a large-scale model test method that can directly simulate the seismic damage process is essential for investigating the seismic performance of underground structures. Herein, based on the seismic response characteristics of underground structures, a quasi-static pushover test device applicable to underground structures was designed, and the corresponding tests and numerical model calculations were executed using the Daikai subway station as a prototype. Based on the macroscopic phenomena of structural damage development of the subway station in the test, the damage mechanism of the station structure was analyzed and compared with the numerical model. The strain amplitudes, displacements, and digital scatter strain color maps were analyzed to verify the reliability of the cyclic pushover loading test simulating the seismic performance level and damage process of the underground structure. Simultaneously, the rationality of the proposed quantification system for classifying the seismic performance level of single-story underground structures was verified.

Keyword:

Cyclic pushover testing Underground structures Quasi-static testing Numerical modeling Seismic excitation

Author Community:

  • [ 1 ] [Zhuang, Haiyang]East China Jiaotong Univ, Sch Civil Engn & Architecture, Nanchang 330013, Peoples R China
  • [ 2 ] [Xu, Zigang]East China Jiaotong Univ, Sch Civil Engn & Architecture, Nanchang 330013, Peoples R China
  • [ 3 ] [Zhang, Ji]East China Jiaotong Univ, Sch Civil Engn & Architecture, Nanchang 330013, Peoples R China
  • [ 4 ] [Yang, Jing]Nanjing Tech Univ, Inst Geotech Engn, Nanjing 210009, Peoples R China
  • [ 5 ] [Chen, Guoxing]Nanjing Tech Univ, Inst Geotech Engn, Nanjing 210009, Peoples R China
  • [ 6 ] [Chen, Su]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China

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Source :

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING

ISSN: 0267-7261

Year: 2023

Volume: 173

4 . 0 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:19

Cited Count:

WoS CC Cited Count: 3

SCOPUS Cited Count: 7

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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