土层锚杆和挡土桩共同作用的非线性分析及其优化设计 English Version
Nonlinear analysis of combined actions of anchor rod and earth-retaining pile wall and its optimum design
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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。Abstract: 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.
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