考虑纵向帽梁作用的支护结构有限单元法

The Finite Element Method For Braced Framing Concerning Vertical Bracing Cap Frame

根据纵向帽梁与支护桩及支撑的约束和变形协调，提出了考虑纵向帽梁作用的支护结构的有限元解法，用于模拟基坑开挖各施工工况。采用能够替代空间结构分析的平面分析方法，既简化了计算，同时又较好地满足了工程需要。给出了计算模式，并讨论了土压力的计算、支撑弹簧系数的取值问题。

According to the inhibit and deformation adjustment of vertical cap frame and bracing pile, the paper put forward the Finite element method for the bracing framing of vertical cap frame, used to simulate the construction conditions of open foundation pit excavation. Starting from practice, the plain analysis is adopted in stead of spatial analysis, which not only simplified the calculation, but satisfied the requirement of construction. The paper proposes a calculation model, discuses the calculation of soil pressure and the value of spring coefficient.