土层锚杆和挡土桩共同作用的非线性分析及其优化设计  

Nonlinear analysis of combined actions of anchor rod and earth-retaining pile wall and its optimum design

作　　者：刘岸军[1] 钱国桢[2] 龚晓南[1] 

机构地区：[1]浙江大学土木工程系,浙江杭州310027 [2]杭州天元建筑设计研究院,浙江杭州311201

出　　处：《岩土工程学报》2006年第10期1288-1291,共4页Chinese Journal of Geotechnical Engineering

摘　　要：对锚杆抗拔力试验p-s曲线用最小二乘法作多项式拟合,并根据土层锚杆与挡土桩交点变形协调关系建立非线性方程组,联立求解可以得到挡土桩的水平位移。本文进一步以挡土桩最大水平位移为约束条件,以锚杆布置间距等作为变量,以挡土桩的最小刚度为目标函数进行优化。最后给出了优化实例。Multinomial fitting equations of experimental p - s curve of soil anchors were obtained with the method of the least squares, then according to the compatibility of deformation of the crossing point of soil anchors and earth-retaining pile wall, the nonlinear equations were proposed. Solving the above simultaneous equations, the horizontal displacement of the earth-retaining pile wall could be obtained. The optimum design of above problem was discussed where the maximum horizontal displacement of the earth-retaining pile wall was taken as the constraint condition, the interval of the soil anchors as variables and the minimum stiffness of the earth-retaining pile wall as the target function. In the end, an optimizing example was given.

关 键 词：土层锚杆 共同作用 非线性回归函数 约束条件 优化解 

分 类 号：TU411[建筑科学—岩土工程]