摘要
采用比较符合实际的双曲线模型来描述土体与水泥土挡墙之间的非线性相互作用,并假定墙体为刚体,且考虑墙体重量与墙底土的抗剪和抗倾覆作用,得到了表示平衡的非线性方程组.求解时,将其转化为求极值问题的极值点.结果表明:双曲线模型和线性模型算得的水平位移随开挖深度变化的规律基本相似,但双曲线模型的结果较大,且随着基坑开挖深度的增大,两种模型算得的土压力分布的差异越来越大,即土体的非线性的影响也越来越显著.
By introducing the hyperbola model to characterize the nonlinear interaction between the soil and the soilcement retaining wall,assuming the wall as a rigid body and considering the effect of shearing and overturning resistance of its weight and the soil below the wall,a set of nonlinear equations to express its balance are presented,and solved by converting them into a corresponding extremum problemThe results illustrate that:the horizontal displacement vscutting depth curve by the hyperbola model is basically similar to that by linearity model, but the horizontal displacement solved by the former is greater,and the difference between the distributions of soil pressure solved by the models becomes greater with the cutting depth, that is, the effect of soil nonlinearity is obvious
出处
《郑州大学学报（工学版）》
CAS
2003年第1期20-23,31,共5页
Journal of Zhengzhou University（Engineering Science）
基金
河南省科技攻关项目(981130411)
河南省自然科学基金资助项目(984043200)
