（启迪设计集团股份有限公司， 苏州 215021）

［摘要］采用MIDAS GTS及SAP2000等有限元软件，对某大型地下空间进行结构抗震分析与设计。采用基于平面的二维土层-结构时程分析法与考虑土层与结构相互作用的弹性连接空间模型的反应位移法、弹性时程分析法及反应谱法，对地下空间结构进行计算分析对比。通过对结构地震响应及主要受力部位内力进行比较表明，空间模型的反应谱法计算结果能够包络另外三种方法的计算结果，该方法可供类似大型地下空间的抗震设计参考。

［关键词］地下空间； 抗震分析； 土层-结构时程分析法； 反应谱法； 反应位移法； 弹性时程分析法

中图分类号：TU375, TU352文献标识码：A文章编号：1002-848X(2017)20-0066-07

Analysis on seismic design method of a large underground structure

Zhang Min, Yang Yukun, Xu Wenxi, Zhu Yi, Zhang Qin, Ye Jia, Wu Wenchun

(Tus-Design Group Co., Ltd., Suzhou 215021， China)

Abstract:The finite element softwares of MIDAS GTS and SAP2000 were used to conduct structural seismic analysis and design on a large underground space structure. Several calculating and analysis methods were adopted on the structure and results were compared, including the plane-based two-dimensional soil-structure time-history analysis method, response displacement method, the elastic time-history analysis method and the response spectrum method based on the elastic connection space model considering the interaction between the soil layer and the structure. The structural seismic responses and the internal forces of the main loading parts were compared, and it indicates that the calculating results of the response spectrum method on the spatial model can envelop the calculation results of the other three methods, which can be used as reference for the seismic design of large underground space structure.

Keywords:underground space; seismic analysis; soil-structure time-history analysis method; response spectrum method; response displacement method; elastic time-history analysis method

作者简介：张敏，学士，教授级高级工程师，一级注册结构工程师，总工程师，Email:zhang@siad-c.com。