[1]吴晔,许紫刚,杜修力.软弱夹层对地下结构地震响应的影响分析[J].郑州大学学报(工学版),2021,42(04):91-97.[doi:10.13705/j.issn.1671-6833.2021.04.014]
　Wu Yan,Xu Zigang,Du Xiuli,et al.Analysis of Effects of Weak Interlayer on Seismic Responses of Underground Structures[J].Journal of Zhengzhou University (Engineering Science),2021,42(04):91-97.[doi:10.13705/j.issn.1671-6833.2021.04.014]

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软弱夹层对地下结构地震响应的影响分析()

分享到：

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

42

期数:

2021年04期

页码:

91-97

栏目:

出版日期:

2021-07-30

文章信息/Info

Title:

Analysis of Effects of Weak Interlayer on Seismic Responses of Underground Structures

作者:

吴晔; 许紫刚; 杜修力

北京工业大学城市与工程安全减灾教育部重点实验室;华东交通大学江西省岩土工程基础设施安全与控制重点实验室;

Author(s):

Wu Yan; Xu Zigang; Du Xiuli;

Key Laboratory of the Ministry of Education of the Ministry of Education of City and Engineering Safety and Engineering of Beijing University of Technology; Key Laboratory of Safety and Control of Geotechnical Engineering Infrastructure Infrastructure of East China Jiaotong University;

关键词:

软弱夹层; 地下结构; 动力响应分析; 整体动力时程

Keywords:

weak interlayer; underground structure; seismic analysis; time history analysis

DOI:

10.13705/j.issn.1671-6833.2021.04.014

文献标志码:

A

摘要:

地下结构震害调查表明，处于非均匀场地中的地下结构更易发生破坏。基于大型通用有限元分析软件ABAQUS，针对某单层双跨地铁车站结构建立二维土-结相互作用整体分析模型，采用基于等效线性化的动力时程分析方法，研究软弱夹层位置、厚度等因素对地下结构地震反应的影响。对比了三条不同频谱特性地震记录垂直入射情况下，地下结构顶底相对位移及关键支撑构件中柱的内力变化情况。分析结果表明，软弱夹层的存在对地下结构地震响应有较大影响，尤其是当软弱夹层位于结构中部并且具有一定厚度时，地下结构的地震反应较常规均匀场地条件中的反应有大幅提高。因此，在实际工程设计中应对软弱夹层的存在予以足够的重视。

Abstract:

Underground structures seismic damage investigation indicated underground structures damage occurred more often in the non-uniform field.In order to study the influence of the location and thickness of weak interlayer on the seismic response of underground structure,a 2D soil-structure interaction model for a single-layer double span metro station structure was established based on the large-scale general finite element analysis software ABAQUS.The dynamic time history analysis method based on equivalent linearization was used to compare the seismic response of three seismic records with different spectral characteristics under normal incidence.The relative displacement of the top and bottom of the lower structure and the change of the internal force of the column in the key supporting components were analyzed.Analysis results showed that the existence of weak interlayers had a great influence on the seismic responses of the underground structures,especially when the weak interlayer was located in the middle of the structure and had a certain thickness,the seismic response of underground structures greatly increased than that of the conventional uniform site condition.As a result,in the practical engineering design，it should be seriously considered to cope with the existence of weak interlayer.

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