直下型地震作用下地下结构的动力响应分析  

Dynamic Response Analysis of Underground Structures Subjected to Earthquakes Occurring Directly Beneath the Structure

作　　者：欧阳燕青[1] 马石城[1] 

机构地区：[1]湘潭大学土木工程与力学学院,湖南湘潭411105

出　　处：《土工基础》2009年第6期68-70,共3页Soil Engineering and Foundation

摘　　要：通过建立土与地下结构相互作用的模型,并利用有限元软件分析在直下型地震力作用下的地下结构的应力、位移以及土层的位移情况,探讨竖向地震力对地下结构的影响,研究表明竖向地震力的参与增加了结构的最大动力反应,对地下结构的破坏有显著的影响。Based on the reasonable model of soil-underground structure, the paper analyses the stress and displacement of underground structures and displacement of soil layers subjected to earthquakes occurring directly beneath the structure by the finite element method. In addition, the effect of seismic force to the underground structure is studied. The results show that the vertical seismic force improves the dynamic reaction of structure. Moreover, vertical earthquake force plays an important role in damage of underground structures.

关 键 词：竖向地震力 地下结构 动力分析 

分 类 号：TU312[建筑科学—结构工程]