摘要
在设计人工挖孔桩时,设计人员往往忽视桩孔稳定性分析,而在施工人工挖孔桩时,又存在许多不安全的施工方法,致使人身事故经常发生,桩孔不能顺利施工。本文先分析了桩孔周围的土压力计算和护壁的设计问题,然后根据人工挖孔桩扩大头以上土体的自重与土体表面摩擦力的平衡,推导出了能够判断桩孔整体稳定性的临界深度公式,本文的分析对指导桩孔设计和施工具有一定的作用。
Designers often ignore stability analysis of pile holes during designing hand-excavation piles and there are a lot of unsafe means of construction, personal injury is often caused by an accident, pile holes can’t smoothly constructed. At first, this paper analyses calculation of earth pressure around piles and design of the shaft wall, then obtains critical depth formula that can judge the whole stabilization of pile holes according to self-weight of earth mass on the belled pier equal to skin friction forces of the earth mass. There is a certain guidance action for design and construction of pile holes by the analysis.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2002年第2期177-179,共3页
Journal of Liaoning Technical University (Natural Science)
