岩土工程学报Issue(8)：1400-1406,7.DOI:10.11779/CJGE201408004
SV波斜入射对岩体隧道洞身段地震响应影响研究
Effect of oblique incidence of SV waves on seismic response of portal sections of rock tunnels
摘要
Abstract
By coupling the explicit finite element method with the viscous-spring artificial boundary condition, the formulae for calculating the equivalent nodal force under the oblique incidence of plane seismic SV waves are deduced. Then, the input of SV waves is realized in the FEM program. A half-space example with simple motion proves that the proposed approach has satisfactory precision. Subsequently, the proposed method is employed to investigate the rock tunnels with two oblique incidence conditions of cross section and vertical section. The numerical results indicate that under the action of obliquely incident seismic waves, the dynamic responses of rock tunnel are clearly different from those under the action of vertically incident seismic waves. In addition, the dynamic responses of the rock tunnels vary greatly with the incidence of SV waves in cross section and vertical section.关键词
地震波斜入射/岩体隧道地震响应/黏弹性人工边界/等效节点力Key words
oblique incidence of seismic wave/seismic response of rock tunnel/viscous-spring artificial boundary condition/equivalent nodal force分类
建筑与水利引用本文复制引用
杜修力,黄景琦,赵密,金浏..SV波斜入射对岩体隧道洞身段地震响应影响研究[J].岩土工程学报,2014,(8):1400-1406,7.基金项目
国家重点基础研究发展计划（973计划项目）（2011CB013600）；国家自然科学基金项目（51008170）；北京市科技新星计划项目 （）
