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针对斜边非轴对称位移边界条件下的沉桩球孔扩张,将桩体贯入模拟为球孔扩张过程,在线弹性土体模型的基础上,通过对地表边界以及倾斜边界上应力修正的镜像法,改进现有直边非轴对称球孔扩张理论,得到了斜边非轴对称位移边界下的球孔扩张挤土位移解答,并分析边界倾角及球孔边界距离等因素的挤土位移规律。研究结果表明,边界倾角越小,倾斜边界对球孔挤土位移的影响也越小;球孔边界距离越大,其对挤土位移的影响反而越小。文中解答可为类似斜边工程挤土位移的控制及参数设置提供参考。
Aimed at the ball-hole expansion process under the non-axisymmetrical displacement boundary of hypotenuse, the pile penetration is modeled as the ball-hole expansion process. Based on the elastic soil model, the image of the stress correction on the surface boundary and the inclined boundary Method to improve the existing non-axisymmetric ball-hole expansion theory of straight sides, the solution of the ball-hole expansion and squeezing displacements under the non-axisymmetric displacement boundary of oblique side is obtained, and the displacement and displacement rules of boundary conditions such as the boundary dip angle and the ball hole boundary distance are analyzed . The results show that the smaller the inclination of the boundary, the smaller the influence of the inclined boundary on the displacements of the ball hole. The larger the distance of the ball hole boundary, the smaller its influence on the displacements of the squeezed soil. This paper can provide a reference for the control and parameter setting of soil displacement similar to the beveling project.