多维地震对非对称地下空间结构反应影响分析

Analysis of the effects of multidimensional earthquakes on the structural response of asymmetric underground structures

以一典型上层五跨和下层三跨的非对称地下空间结构为实际工程背景,同时考虑到土-结构相互作用效应,设计了水平向输入地震动、水平向及竖向联合输入地震动两类工况,采用通用有限元软件ABAQUS对该复杂地下空间结构的抗震性能与损伤情况开展了研究,研究成果揭示了非对称地下空间结构在地震作用下的薄弱部位和损伤水准,为此类结构的抗震设计与分析提供合理的参考。

Taking an asymmetric underground structure with five spans on the upper floor and three spans on the lower floor as the engineering background and considering the soil-structure interaction,this paper uses the finite element software ABAQUS to study the seismic performance and damage of the underground structure under the horizontal and combined action of horizontal and vertical ground motions.The research results reveal the weak parts of the asymmetric underground structure under the earthquakes,which can provide reasonable references to the earthquake-resistant design of these kind of structures.