摘要
本文在明确应力释放率和位移释放率的基础上,重点分析开挖面空间效应区的位移释放,并建立了应力释放与位移释放间的关系。文中分析了开挖问题采用平面模型计算时,应对开挖初应力进行修正,并给出了算法。最后与北京地铁的实测资料进行对比。
This paper gives an analysis of the deformation release in the spacial influential district excavation face and also establish the realationship between the stress release and the deformation release. In the paper it points out that when the plane model is used to compute the excavation problem, the initial stress of excavation must be modified, and the algorithmic model is shown in the paper. Finally, the computational results are compared with the field data of the subway in Beijing.
出处
《上海力学》
CSCD
1997年第1期91-98,共8页
Chinese Quarterly Mechanics
基金
国家自然科学基金
关键词
开挖
空间效应
应力释放率
岩土
excavation, spacial, release ratio of deformation, release ratio of stress.
