大型地下组合结构抗震计算方法的分析与选择

Analysis and Selection of Seismic Calculation Methods for Large Underground Composite Structures

大型综合地下结构由于具有空间集约、功能齐全等优势成为目前地下结构发展的趋势。这种明挖施工的大型空间结构,兼有地下隧道结构和地上空间框架结构的双重特点,所以这种结构的抗震计算颇有争议。本文对相关的抗震计算方法进行了深入研究和综合对比,并通过计算验证,证明计算方法的选择,主要取决于地下结构物与周围土体的变形协调情况,实际工程中需要根据边界条件选择适合的抗震计算方法。

Due to the advantages of intensive space and complete functions,large-scale comprehensive underground structure has become the development trend of underground structure at present.This kind of large space structure with open cut constructure has the double characteristics of underground tunnel structure and overground space frame structure,so the seismic calculation of this kind of structure is quite controversial.In this paper,the relevant seismic calculation methods were thoroughly studied and comprehensively compared.Through calculation and verification,it was proved that the choice of calculation method mainly depends on the deformation coordination between the underground structure and the surrounding soil,and it is necessary to choose the appropriate seismic calculation method according to the boundary conditions in actual engineering.