【摘要】 依托岩质边坡坡顶建筑工程实例,通过FLAC^3D建立数值计算模型。分析了该工程中各穿过潜在破裂面的基桩所受推力的作用位置、各桩所受推力随潜在破裂面抗剪强度的变化以及不同岩体强度对各桩所受推力的影响。结果表明:在本工程中,穿过潜在破裂面的建筑基桩所承受的推力主要集中在潜在破裂面以上0～3m范围,临近潜在破裂面处桩基所受推力最大。潜在破裂面抗剪强度较大时,各桩所受推力随潜在破裂面强度的降低而迅速增加;各桩所受推力达到一定数值后,逐渐趋于稳定。潜在破裂面抗剪强度较高时,岩体强度较低的边坡,各桩所受到的推力大小更加均匀,受力也较小;潜在破裂面抗剪强度较低时,岩体强度较高的岩质边坡,各桩所受到的推力大小更加均匀。更多还原

【Abstract】 The numerical calculation model was established based on the rock slope engineering examples.Through the FLAC3D analysis of the project through each potential failure surface of the pile by the position changes of each pile thrust,the thrust with the potential failure surface of shear strength and different rock strength on each pile. The results show that the thrust in this project,through the potential failure surface of the building pile foundation under the thrust above the potential failure surface is mainly concentrated in the range of 0 ～ 3 m,approaching the potential failure surface of pile by maximum thrust. The potential failure surface of shear strength is large,and the lower pile by thrust with the potential failure surface strength increased rapidly; the pile pushing force reaches a certain value,gradually stabilized. The potential failure surface of high shear strength,slope rock strength is low,and the size of the pile by the thrust force is more uniform. The potential failure surface of shear strength is low,the rock slopes with higher strength,thrust each pile are more uniform.更多还原