摘要
本文借助有限元数值方法来模拟地道桥结构在顶进施工阶段与土的相互作用,为能真实地描述两者间相互作用,分别对结构和土体工作性态的影响,采用三维实体建模方法模拟地道桥结构与周围土体的位移、应力分布特征。数值模拟结果表明,箱体结构前端的位移和应力值受箱体结构长度的影响较大。模拟结果为地道桥结构设计提供了可靠的分析依据。
In this paper, the interaction between underpass and soil cross-below railway during jacking is simulated based on FEM numerical analysis. A 3-D solid modeling is applied to the simulation, which describes the interaction influencing on the structure and soil. The simulating results showed that maximum displacement and stress is affected by structure lengths.
出处
《地下空间与工程学报》
CSCD
2005年第6期829-831,836,共4页
Chinese Journal of Underground Space and Engineering
关键词
地道结构
有限元法
相互作用
应力场
位移场
underpass
finite dement method
interaction
stress field
displacement field
