反应位移法在圆形隧道抗震分析中的适用性评价  

Adaptability Evaluation of Response Displacement Method in Seismic Analysis of Circular Tunnel

作　　者：禹海涛[1] 张正伟 段科萍 朱春成 张帆[5] YU Haitao;ZHANG Zhengwei;DUAN Keping;ZHU Chuncheng;ZHANG Fan(Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University,Shanghai 200092,China;Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China;Liyang Municipal Bureau of Water Resources,Changzhou 213300,China;Jiangsu Boyuan Land Planning and Design Consulting Co.Ltd.,Nanjing 210004,China;Banqiao Reservoir Administration Bureau,Zhumadian 463715,China)

机构地区：[1]同济大学岩土及地下工程教育部重点实验室,上海200092 [2]同济大学地下建筑与工程系,上海200092 [3]溧阳市水利局,常州213300 [4]江苏博源土地规划设计咨询有限公司,南京210004 [5]驻马店市板桥水库管理局,驻马店463715

出　　处：《结构工程师》2018年第A01期138-145,共8页Structural Engineers

基　　金：国家自然科学基金项目(51678438);上海市科学技术委员会(16DZ1200302&16DZ1201904);上海市青年科技启明星计划(17QC1400500)

摘　　要：反应位移法是目前国家和行业规范均推荐采用的地下结构抗震设计方法。但目前对反应位移法的参数选取及其适用性的认识尚不深刻,从而制约了反应位移法在隧道抗震分析与设计中的应用。本文以动力时程分析法为基准,对比分析圆形隧道两种不同的地层剪力计算方法对反应位移法计算精度的影响;同时评价了不同场地条件、不同埋深下反应位移法的适用性。结果表明,反应位移法在圆形隧道抗震分析中适用性较好,且计算精度随埋深增大略有提高;但轴力计算结果明显偏小,且随地层剪切波速的增加,轴力计算误差略有增大。Response displacement method is a seismic design method of underground structures recommended by national and local codes.However,the parameter selection and adaptability of response displacement method is not studied thoroughly,which restricts the application of response displacement method in seismic analysis and design of tunnels.In this paper,dynamic time history analysis method was used to analyze the seismic response of the tunnel,comparing and analyzing the influence of two different ground shear calculating methods in circular tunnels on response displacement method’s analysis accuracy.And this paper also evaluated the adaptability of response displacement method when the tunnel with different ground parameters or different overburden depth.The results show that response displacement method has good applicability in seismic analysis of circular tunnels and its accuracy is improved with the increase of overburden depth.However,the result of axial forces is obviously smaller than those from dynamic time history analysis method,and its axial force error becomes larger with the increase of soil shear velocity.

关 键 词：圆形隧道 抗震设计 反应位移法 动力时程法 

分 类 号：U452.28[建筑科学—桥梁与隧道工程]