输电线路人工挖孔桩孔壁稳定性分析

摘要

根据输电线路人工挖孔桩的成桩过程,对孔壁应力进行了弹塑性分析,利用摩尔—库仑准则和极限平衡理论并结合工程经验,推导并提出了孔壁稳定性的判据公式,将结论应用于海南电网的具体工程中,取得了显著的经济效益,对输电工程有一定的指导作用。%According to the making process of transmission line artificial dig-hole pile,pore wall stress is analysed based on elastic-plastic theory.By the Moore-Coulomb criterion and limit equilibrium theory,combining engineering experience,criterion formula for hole wall stability is discussed and putted forward.The conclusion which is applicated in specific engineering of Hainan power grid,has gained notable economic benefits and has some instruction function to the transmission project.