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.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2006年第10期1288-1291,共4页
Chinese Journal of Geotechnical Engineering
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
soil anchor
combined actions
nonlinear regression function
constraint condition
optimum design
