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作者:

Tang, Baizan (Tang, Baizan.) | Li, Xiaojun (Li, Xiaojun.) (学者:李小军) | Chen, Su (Chen, Su.) | Zhuang, Haiyang (Zhuang, Haiyang.) | Chen, Hua-Peng (Chen, Hua-Peng.)

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摘要:

In this study, shaking table tests were performed to investigate the dynamic interaction of a silty-clay soil with an irregular-section subway station. During the tests, a shape acceleration array (SAA) was used to measure the lateral deformation of the model soil, and a non-contact dynamic displacement testing method was applied to visualize and digitalize the seismic damage process of the station structure. Typical test results, including the dynamic earth pressure, seismic settlement, deformation, and acceleration of different levels of the structure, were interpreted. The results indicated that the movement of the subway station was more controlled by the surrounding silty-clay soil in terms of phase and amplitude. SAA can effectively measure the soil deformation, and the relationship between the relative lateral displacement and soil depth can be well fitted in a cosine function, especially when subjected to strong earthquakes. Seismic settlement is significantly linked to Arias intensity, and the subway station experienced significant uneven settlement, resulting in soil-structure separation in the vertical direction. The multi-story irregular-section subway station deforms in a shear mode. The maximum inter-story drift ratio was approximately 1/171. The components in the lower layers of the shallow-buried subway station structure, particularly in the central columns, underwent cumulative damage. Hence, more robust forms of structural members and the ductility of central columns should be carefully considered in the seismic design of subway station structures.

关键词:

Seismic damage Shaking table test Irregular-section subway station Silty clay Deformation characteristics

作者机构:

  • [ 1 ] [Tang, Baizan]East China Jiaotong Univ, Engn Res Ctr Railway Environm Vibrat & Noise, Minist Educ, Nanchang 330013, Jiangxi, Peoples R China
  • [ 2 ] [Zhuang, Haiyang]East China Jiaotong Univ, Engn Res Ctr Railway Environm Vibrat & Noise, Minist Educ, Nanchang 330013, Jiangxi, Peoples R China
  • [ 3 ] [Chen, Hua-Peng]East China Jiaotong Univ, Engn Res Ctr Railway Environm Vibrat & Noise, Minist Educ, Nanchang 330013, Jiangxi, Peoples R China
  • [ 4 ] [Li, Xiaojun]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 5 ] [Li, Xiaojun]China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China
  • [ 6 ] [Chen, Su]China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China

通讯作者信息:

  • [Chen, Su]China Earthquake Adm, Inst Geophys, Beijing 100081, Peoples R China

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来源 :

ENGINEERING STRUCTURES

ISSN: 0141-0296

年份: 2020

卷: 217

5 . 5 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:115

被引次数:

WoS核心集被引频次: 32

SCOPUS被引频次: 37

ESI高被引论文在榜: 0 展开所有

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