论文部分内容阅读
针对刚性挡土墙的墙后被动土压力采用非线性破坏准则,提出利用多切线法引入瞬时变量C t和?t,在塑性极限上限定理的基础上,建立了被动土压力问题的多三角形破坏机构,推导了基本计算公式,并根据序列二次规划法对三角形单元划分方式进行优化,从而得到最小的上限解。通过与已有研究成果进行对比分析,表明计算结果合理,是一种严格的上限解。
Aiming at the failure criterion of passive earth pressure behind the wall of rigid retaining wall, the multi-tangential method is introduced to introduce the instantaneous variables Ct and? T. On the basis of the upper limit theorem of plasticity, the multi-triangle damage of passive earth pressure is established Institutions, derived the basic calculation formula, and according to the sequence quadratic programming method to optimize the triangular unit division, resulting in the minimum upper solution. By comparing with the existing research results, it shows that the calculation result is reasonable and is a strict upper limit solution.