|本期目录/Table of Contents|

[1]庄海洋,朱超,吴滨,等.场地类别对地铁地下车站结构地震反应的影响规律[J].南京工业大学学报(自然科学版),2015,37(04):70-76.[doi:10.3969/j.issn.1671-7627.2015.04.013]
 ZHUANG Haiyang,ZHU Chao,WU Bin,et al.Seismic responses of underground subway station built in different sites[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2015,37(04):70-76.[doi:10.3969/j.issn.1671-7627.2015.04.013]
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场地类别对地铁地下车站结构地震反应的影响规律()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
37
期数:
2015年04期
页码:
70-76
栏目:
出版日期:
2015-07-09

文章信息/Info

Title:
Seismic responses of underground subway station built in different sites
文章编号:
1671-7627(2015)04-0070-07
作者:
庄海洋12朱超1吴滨1陈国兴12
1.南京工业大学 岩土工程研究所,江苏 南京 210009; 2.江苏省土木工程防震技术研究中心,江苏 南京 210009
Author(s):
ZHUANG Haiyang12ZHU Chao1WU Bin1CHEN Guoxing12
1.Institute of Geotechnical Engineering,Nanjing Tech University,Nanjing 210009,China; 2.Civil Engineering & Earthquake Disaster Prevention Center of Jiangsu Province,Nanjing 210009,China
关键词:
地铁车站 场地类别 地震反应 数值模拟
Keywords:
subway station site classification seismic response numerical simulation
分类号:
P315.95
DOI:
10.3969/j.issn.1671-7627.2015.04.013
文献标志码:
A
摘要:
以南京地铁建设为工程背景,根据《建筑抗震设计规范》(GB 50011—2010)中场地类别的分类方法,保持场地覆盖层厚度不变,通过改变场地等效剪切波速,设计出典型的Ⅱ、Ⅲ、Ⅳ类工程场地类别。采用大型有限元分析软件ABAQUS,考虑土体与混凝土的非线性以及土与结构接触非线性,研究地铁车站在规范规定的不同场地类别条件下地下结构的层间位移和位移角反应特征以及结构关键部位的应力反应特征。结果表明:不同场地类别对地铁地下车站结构地震反应的影响规律和影响程度有所不同。总体来看,在较差场地类别条件下,基岩输入峰值加速度峰值对层间位移角幅值的影响程度较大,且对车站结构下层层间位移角幅值的影响更大。在本文所有的输入地震动强度条件下,Ⅱ类场地下地铁车站结构基本处于弹性工作状态,而Ⅳ类场地下地铁车站结构在中小地震发生时层间位移角很容易进入整体弹塑性工作状态。同时,场地类别越差,车站结构整体残余变形越容易发生,造成结构的残动内力也迅速增加。
Abstract:
Based on the construction background of underground subway station built in Nanjing,three kinds of sites with same thickness of covering soil were designed according to Code for Seismic Design of Buildings(GB 50011—2010).Then,the nonlinear seismic responses of a large underground subway station in different sites were analyzed by using finite-element method in detail.The dynamic horizontal interlayer relative displacement and stress responses at the key positions of subway station were studied,respectively.As results,the different sites had main effects on the seismic responses of a large underground structure.With the site changing from No.Ⅱ to No.Ⅳ,the effects of inputted PGA on the interlayer displacement angle became also stronger,especially effect on the under layer of subway station,the underground structure were more apt to work in elastic-plastic state.In addition,in soft site No.Ⅲ and No. Ⅳ,the residual deformation of structure at the end of earthquake was also very larger,thus inducing large seismic residual loads in the components of underground structure after the earthquakes.

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备注/Memo

备注/Memo:
收稿日期:2014-06-18
基金项目:国家自然科学基金(51278246)
作者简介:庄海洋(1978—),男,江苏宿迁人,副教授,博士,主要研究方向为轨道交通防震减灾,E-mail: zhuang7802@163.com.
引用本文:庄海洋,朱超,吴滨,等.场地类别对地铁地下车站结构地震反应的影响规律[J].南京工业大学学报:自然科学版,2015,37(4):70-76..
更新日期/Last Update: 2015-07-08