[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.
 Analysis of effects of weak interla<x>yer on seismic responses of underground structures[J].Journal of Zhengzhou University (Engineering Science),2021,42(04):91-97.
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软弱夹层对地下结构地震响应的影响分析()
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《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 interla<x>yer on seismic responses of underground structures
作者:
吴晔许紫刚杜修力
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. ba<x>sed on the general finite element analysis software ABAQUS, specific to single double span metro station establish a global analysis model of 2-d soil-structure interaction, used the dynamic time history analysis method ba<x>sed on equivalent linearization, analyzed such factors as the position or thickness of the weak interla<x>yer on seismic response of the underground structure, compared under the condition of vertical incidence of three seismic records with different spectral characteristics the relative displacement of the top and bottom of the underground structure and the change of the internal force of the middle column. Analysis results show that the existence of weak interla<x>yers has a great influence on the seismic responses of the underground structures, especially when the weak interla<x>yer is located in the middle of the structure and has a certain thickness, the seismic response of underground structures has greatly increased then that of the conventional uniform site condition. As a result, in the practical engineering design shall be seriously enough to cope with the existence of weak interla<x>yer.
更新日期/Last Update: 2021-08-26