Soil-High-rise Building Group Dynamic Interaction Considering Site Effect
This article reports a sub-domain method to analyze the dynamic interaction of soil—high-rise building group considering sit effect, which is the extension of the domain reduction method proposed by Bielak and his coworkers in the framework of the finite-element method, originally for building-soil-foundation interaction problems. The whole domain with high-rise building group is divided into two interrelated subdomains, the external domain and the internal one. And the method contains two steps. In addition, the effect of the external domain to the internal domain is expressed by the equivalent forces which are put on the nodes of the interface between the two subdomains in the second step. The formation of the equivalent force is attained according to the equation of motion. In the first step the free-field ground motion is calculated under the bedrock wave excitation, and all the nodal displacements are stored. Then the equivalent forces are calculated according the data in the first step, using the formulation of the equivalent force. In the second step a finite element analysis model of the subdomain containing the internal domain and the highrise building group is established, and the equivalent forces are put on the nodes of the interface. Later the seismic response of soil—highrise building group can be calculated.
sub-domain high-rise building group sit effect equivalent force
Qi Ge Feng Xiong
College of Architecture and Environment Sichuan University Chengdu, China
国际会议
三峡
英文
3476-3480
2012-05-18（万方平台首次上网日期，不代表论文的发表时间）