滑坡抗滑桩设计中桩前抗力的计算探讨  

Discussion on Calculation of Front Resistance in Landslide Anti-slide Pile Design

作　　者：邓巧遇 DENG Qiaoyu(The 11th Geological Team of Sichuan,Dazhou,Sichuan 635000)

机构地区：[1]四川省地质局第十一地质大队,四川达州635000

出　　处：《四川地质学报》2024年第3期542-546,共5页Acta Geologica Sichuan

摘　　要：针对目前工程技术人员在滑坡治理工程中进行抗滑桩设计时,对桩前抗力的考虑不一致的问题,以重庆市开州区某滑坡为例,就考虑桩前抗力的条件、桩前抗力的计算方法、不同稳定状态下的桩前抗力对抗滑桩受力的影响等问题进行研究。通过对比分析,认为在桩前滑体稳定(即稳定系数Fs≥安全系数Fst)的情况下需考虑桩前抗力,并且按最小稳定系数等于安全系数计算出的桩前滑体抗力更符合“适当考虑桩前抗力”的设计原则;据此设计抗滑桩,经济的同时又具有一定的安全储备。When engineers and technicians design anti-slide pile in landslide control project,they should consider the problem of inconsistent of front resistance of pile.Taking a landslide in Kaizhou District of Chongqing as an example,the conditions of considering the pile front resistance,the calculation method,and the influence on the force of the anti-slide pile under different stable states are studied.Comparative analysis shows that the pile front resistance should be considered when the sliding body in front of the pile is stable(i.e.stability coefficient Fs≥safety coefficient Fst).According to the minimum stability factor equal to the safety factor,the resistance of sliding body in front of pile is more conformed to the design principle of"taking proper consideration of the resistance in front of pile".The design of anti-slide pile is economical and has a certain safety reserve.

关 键 词：滑坡 抗滑桩 桩前抗力 滑坡推力 桩前滑体抗力 

分 类 号：P642.3[天文地球—工程地质学]