摘要
针对武隆隧道出口处穿越楼房基础的工程实例,通过合理的简化和假设建立三维仿真模型。采用大型有限元程序,通过荷载增量步和单元生死技术,分两种模拟工况对浅埋暗挖隧道的动态开挖全过程进行数值模拟分析,研究了加强支护的刚度控制施工方法对地表和拱顶沉降的影响,为类似的工程实践提供指导。
On the study of the engineering practice of excavation of Wulong tunnel under building foundation, the three dimension numerical modeling was established by reasonable simplification and hypothesis. Using FEM programs, the two simulation working condition of the dynamic excavation process for the shallow burying tunnel under building foundation was numerically simulated by the FEM techniques of loading increment step and element live/death. The influence of stiffness controlling method by reinforce the timbering on the settlement of ground and tunnel top were considered. This study can provide guide for the similar engineering practices.
出处
《地下空间与工程学报》
CSCD
2005年第1期78-82,90,共6页
Chinese Journal of Underground Space and Engineering
