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Study on seismic failure mechanism of shallow buried underground frame structures based on dynamic centrifuge tests

机译：基于动态离心机测试的浅埋地下框架结构抗震故障机理研究

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摘要

During the Kobe earthquake in 1995, Daikai subway station suffered the severe collapse, which aroused people's more attention to the earthquake damage response of underground structures. In order to investigate the seismic failure mechanism of underground frame structures, a series of 1/50-scaled dynamic centrifuge tests were conducted. To make the underground structures produce a reasonable seismic failure mode in tests, an experi-mental scheme was designed in detail based on the author's previous numerical studies. With the purpose of simulating the vertical inertial effect of the overburden soil in the dynamic centrifuge tests, a certain proportion of steel grits were mixed into the overlying soil. A model structure finally occurred the overall collapse mode, which was similar to that of Daikai subway station. Based dynamic centrifuge tests, the seismic failure mecha-nism of shallow buried underground frame structure was analyzed and summarized in the paper. It could offer a reference for the cause of collapse of Daikai subway station. The series of tests provided valuable experimental data for further studies of the earthquake damage response of underground frame structures, and also enriched the testing technique for destructive model tests.
机译：在1995年的神户地震期间，大海地铁站遭遇严重崩溃，引起了人们更加关注地下结构的地震损伤反应。为了研究地下框架结构的地震故障机理，进行了一系列1/50缩放的动态离心机试验。为了使地下结构在测试中产生合理的地震失效模式，基于作者之前的数值研究，详细设计了一种实验计划。目的是模拟覆盖覆盖土壤的垂直惯性效果在动态离心机测试中，将一定比例的钢筋混合到上覆土壤中。模型结构终于发生了整体崩溃模式，类似于大白地铁站。基于动态离心机测试，分析浅埋地下框架结构的地震衰竭机电机械结构，并综述了论文。它可以为大海地铁站崩溃的原因提供参考。该系列测试提供了有价值的实验数据，以进一步研究地下框架结构的地震损伤响应，并富集了破坏性模型试验的测试技术。

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  • 来源
    《Soil Dynamics and Earthquake Engineering》 |2021年第11期|106938.1-106938.14|共14页
  • 作者

    Zhang Zihong; Li Yang; Xu Chengshun; Du Xiuli; Dou Pengfei; Yan Guanyu;

  • 作者单位

    Beijing Univ Technol Key Lab Urban Secur & Disaster Engn Minist Educ Beijing 100124 Peoples R China;

    Beijing Univ Technol Key Lab Urban Secur & Disaster Engn Minist Educ Beijing 100124 Peoples R China|China Acad Railway Sci Corp Ltd Urban Rail Transit Ctr CARS Beijing 100081 Peoples R China;

    Beijing Univ Technol Key Lab Urban Secur & Disaster Engn Minist Educ Beijing 100124 Peoples R China;

    Beijing Univ Technol Key Lab Urban Secur & Disaster Engn Minist Educ Beijing 100124 Peoples R China;

    Beijing Univ Technol Key Lab Urban Secur & Disaster Engn Minist Educ Beijing 100124 Peoples R China;

    Beijing Univ Technol Key Lab Urban Secur & Disaster Engn Minist Educ Beijing 100124 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Shallow buried underground frame structures; Seismic failure mechanism; Dynamic centrifuge test; Vertical earthquake action;

    机译：浅埋在地下框架结构;地震失效机制;动态离心机试验;垂直地震作用;

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