摘要
利用动态时程分析法,研究了紧临建筑物的地下结构的动力响应.分析时选用三条强波,作用在紧临建筑物的地下结构上,考虑2个传播方向进行对比,以确保地下结构的安全可靠.运用空间有限元分析软件建立了三维的地下结构、地下结构基础以及周边土层模型,考虑桩土接触的摩擦作用进行地震波的时程分析.同时,特别研究了地震波在竖直方向的传播对地下结构的影响,并且将桩土摩擦接触效应列入对地震响应的影响因素,得出在地震波竖直方向传播中,桩土摩擦对结构抗震有较大影响,为今后类似工程的抗震分析提供参考.
Dynamic time history analysis method is widely regarded as the most accurate calculation of the theoretical seis- mic analysis of structures. The paper analyzes the response of underground construction close to the building with the three strong waves focused on it, and the two propagation directions are compared during the process in order to ensure the un- derground structures safe, reliable. Besides, a three-dimensional underground garage, underground garage foundation and surrounding soil model are established with limited use of common space element analysis software, meanwhile, the friction of pile-soil contact time-history analysis of seismic waves is taken into consideration. The paper, especially studies the im- pact of seismic wave propagation in the vertical direction of underground structures, and verifies the effects of pile-soil seismic response. All of the studies will provide a further reference for the similar projects.
出处
《天津城建大学学报》
2015年第1期40-45,共6页
Journal of Tianjin Chengjian University
关键词
时程分析
地震响应
地下结构
dynamic time history analysis
seismic response
underground structure
