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土-地下连续墙-复杂异跨地铁车站结构动力相互作用分析

王建宁, 窦远明, 庄海洋, 付继赛, 马国伟

王建宁, 窦远明, 庄海洋, 付继赛, 马国伟. 土-地下连续墙-复杂异跨地铁车站结构动力相互作用分析[J]. 岩土工程学报, 2019, 41(7): 1235-1243. DOI: 10.11779/CJGE201907007
引用本文: 王建宁, 窦远明, 庄海洋, 付继赛, 马国伟. 土-地下连续墙-复杂异跨地铁车站结构动力相互作用分析[J]. 岩土工程学报, 2019, 41(7): 1235-1243. DOI: 10.11779/CJGE201907007
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WANG Jian-ning, DOU Yuan-ming, ZHUANG Hai-yang, FU Ji-sai, MA Guo-wei. Seismic responses of dynamic interaction system of soil-diaphragm wall-complicated unequal-span subway station[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(7): 1235-1243. DOI: 10.11779/CJGE201907007
Citation: WANG Jian-ning, DOU Yuan-ming, ZHUANG Hai-yang, FU Ji-sai, MA Guo-wei. Seismic responses of dynamic interaction system of soil-diaphragm wall-complicated unequal-span subway station[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(7): 1235-1243. DOI: 10.11779/CJGE201907007
shu

土-地下连续墙-复杂异跨地铁车站结构动力相互作用分析  English Version

  • 1. 河北工业大学土木与交通学院,天津 300401;
    2. 南京工业大学岩土工程研究所,江苏 南京 210009

基金项目: 国家自然科学基金面上项目（51778290,51778282）; 江苏省高校自然科学基金重大项目（16KJA560001）; 河北省研究生创新资助项目（CXZZBS2018038）
详细信息
    作者简介:

    王建宁(1992— ),男,博士研究生,从事地铁地下结构抗震研究工作。E-mail：wangjianninghebut@163.com。

    通讯作者:

    庄海洋，E-mail：zhuang7802@163.com

  • 中图分类号: TU43

Seismic responses of dynamic interaction system of soil-diaphragm wall-complicated unequal-span subway station

  • 1. School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China;
    2. Institute of Geotechnical Engineering, Nanjing Tech University, Nanjing 210009, China

摘要

    摘要
  • 摘要: 针对目前地铁地下车站结构抗震性能研究中不考虑地下连续墙存在的现实问题,通过建立土-地下连续墙-复杂异跨地铁车站结构静动耦合非线性相互作用的有限元数值模型,对比分析了无地下连续墙、含单层地下连续墙及含双层地下连续墙等不同情况下异跨地铁地下车站结构的地震动力反应特征。结果表明：地下连续墙的存在仅在地震强度较小时能够显著提高车站主体结构的抗水平侧移能力,当地震强度较大时结构的水平位移增大明显;从结构层间位移的角度看,结构下层的层间位移涨幅最大,不考虑地下连续墙存在的计算结果将偏于危险;地下连续墙加强了地铁车站结构的抗侧移刚度,致使车站结构整体变形性态和内力分布发生重大变化,其中结构侧墙端部应力水平明显减小,各楼板端部的应力水平明显增大;本文计算工况中,异跨车站结构的下层中柱是抗震设计时的薄弱位置,其中以双层地下连续墙工况时的结构下层最为危险。
    Abstract: In view of the current practical problems of neglecting the existence of underground diaphragm walls in the study of seismic performance for underground subway structures, a static and dynamic coupling finite-element model for the interaction system of soil-diaphragm wall-complicated unequal-span subway station is established, and the earthquake responses among the unequal-span subway station without diaphragm wall as wells as structures with single- and double-layer diaphragm walls are compared and analyzed. The results show that the existence of diaphragm walls can significantly improve the resistance of the station to horizontal lateral displacement in small earthquakes, while the horizontal displacement of the subway structures increases obviously when the seismic intensity increases. Moreover, the interlayer displacement of the lower structures increases the most, which implies that the calculated results of ignoring the existence of underground diaphragm walls will be skewed to danger. The diaphragm walls strengthen the anti-lateral stiffness of the subway station, which leads to a significant change in the overall deformation state and internal force distribution of the underground structures, among which the stress level at the end of the side wall of the structures is dramatically reduced and the stress level at the end of each floor is increased significantly. The lower columns of unequal-span subway station act as the weak position in the structural seismic design under strong earthquakes, especially for the case of double-layer diaphragm walls.
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    • 参考文献(17)
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  • 收稿日期:  2018-08-28
  • 发布日期:  2019-07-24

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