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以现有半无限土体中球孔扩张挤土位移的解答为基础,分别对水平地表和非轴对称斜边两个位移边界进行应力修正,运用坐标转换法和叠加法的原理,改进现有的分析方法,得到较为简化的非轴对称位移边界下扩孔问题的解答,并对非轴对称斜边倾角以及球孔离斜边距离等因素对挤土位移的影响进行了分析。结果表明:倾斜边界条件的存在对球孔两侧的挤土位移有明显影响,且随着非轴对称边界倾角的增大,靠近倾斜边界侧的挤土位移也随之增大;球孔距自由边界的距离越大,自由边界对挤土位移的影响也越小。该解答对非轴对称边界条件下的静压沉桩以及相关扩孔问题的设计和施工具有一定的指导意义和实用价值。
Based on the solution of the displacement of squeezed soils in existing semi-infinite soils, the stress displacements of horizontal displacements and nonsymmetrical beveled edges are respectively corrected. By using the principles of coordinate transformation and superposition, , The simplified solution to the problem of reaming in the non-axisymmetric displacement boundary is obtained. The influence of non-axisymmetric dip and the distance from the hypotenuse to the displacement of the soil is analyzed. The results show that the existence of inclined boundary conditions has a significant influence on the displacement of soil on both sides of the ball hole. With the increase of the non-axisymmetric boundary inclination, the displacement of soil-squeezing near the inclined boundary also increases. The larger the distance of free boundary, the less influence the free boundary has on the displacement of soil. This solution has certain guiding significance and practical value for the design and construction of static pressure pile sinking and related reaming in non-axisymmetric boundary conditions.