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在考虑埋管分缝基础上,利用有限元软件ABAQUS对坝下埋管施工过程进行三维有限元模拟,以研究材料参数对埋管垂直土压力与沉降的影响规律。结果表明,埋管分缝对埋管受力有利,土压力系数随弹性模量的增加而减小、随填土摩擦角增大而增大、随地基刚度的增加而增大;埋管沉降随弹性模量的增大而减小、随地基刚度的增加而减小,填土摩擦角值对沉降影响不大。
Based on the consideration of pipe grouting, the finite element software ABAQUS was used to simulate the pipe construction process under dam to study the effect of material parameters on the vertical earth pressure and settlement of buried pipe. The results show that the grouting of buried pipe is beneficial to the tube embedment, and the earth pressure coefficient decreases with the increase of elastic modulus, increases with the increase of the friction angle and increases with the increase of the foundation stiffness. It decreases with the increase of elastic modulus and decreases with the increase of foundation stiffness, and the frictional angle of filling soil has little effect on settlement.