摘要
假设桩锚支护下基坑土体塑性变形破坏机构以及满足边界条件的合理机动场,而不是传统方法中那样将土体离散为许多相对运动的刚性块．运用土塑性力学中极限分析法的上限定理从能量功率角度探讨了超载下桩锚支护基坑竖直边坡安全系数的计算方法．并以一工程为例,用FLAC数值分析软件的模拟结果对该方法进行了验证．
The plastic failure pattern of soil and the reasonable kinematic pattern satisfying the boundary conditions are assumed for the pile anchorage system in the foundation pit in this paper, unlike the conventional method, where soil is divided into several rigid pieces. The safety factor for the vertical slope of the pile anchorage system in the foundation pit under attached load is calculated based on the upper bound method of limit analysis of soil plasticity. An engineering example is given to validate the method with software FLAC.
出处
《力学与实践》
CSCD
北大核心
2007年第2期40-42,53,共4页
Mechanics in Engineering
关键词
上限定理
超载
桩锚支护
安全系数
FLAC
upper bound method, attached load, pile anchorage system, safety factor, FLAC
