抗滑桩支护边坡稳定性分析的改进Bishop法研究  

Stability Analysis of Bored Pile Stabilized Slope Using the Improved Bishop Method

作　　者：董娉婷 卜伟斐[1] DONG Pingting;BU Weifei(School of Energy Engineering,Jiangxi Vocation College of Industry&Engineering,Pingxiang 337055)

机构地区：[1]江西工业工程职业技术学院能源工程学院,江西萍乡337055

出　　处：《土工基础》2023年第3期406-409,共4页Soil Engineering and Foundation

基　　金：江西省教育厅科学技术研究项目资助(GJJ207301)。

摘　　要：为评价抗滑桩加固边坡的稳定性,基于Bishop法,假定条间力、抗滑力的方向以及作用点,建立抗滑桩支护边坡的力学分析模型,确定抗滑桩的下滑力和安全系数表达式,探讨了安全系数与桩位、抗滑力的关系。分析表明:Bishop法边坡稳定性分析的改进模型得到的结果与其余算法较为接近,表明改进方法具有可行性和适用性;计算的下滑力与其余方法得到的结果误差在3%以内,表明所建立的抗滑桩支护边坡分析模型计算精度较好且合理;抗滑桩设置在坡面中部区域时,桩体的抗滑稳定作用得到充分发挥,且安全系数随着抗力的增大而线性增大。In order to evaluate the use of bored pile for the landslide remediation,the stability of the slope is evaluated by using the Bishop method and considering all the force effects on the factor of safety.In the evaluation,it is assumed that the force among the slides,the direction and the location of the anti slide force are determined so that the analytical model of landslide with the bored piles can be established and then sliding driving force and the factor of safety can therefore be presented.The relationship of factor of safety among the location of the bored piles and magnitude of the sliding driving forces are also discussed in the paper.The numerical results show that the improved Bishop model analysis of the slope stability by the results with the rest of the algorithm is close to show that this method is feasible and applicable.The estimation of sliding driving force and the rest of the algorithm results within 3%error analysis shows that the model in this paper to establish the good accuracy and reasonable design of the bored pile in slope remediation.The central portion of the slope provides an ideal location for the bored pile the stability of the slope,and the factor of safety increases linearly with the resistance.

关 键 词：抗滑桩 边坡 稳定性 安全系数 

分 类 号：P642[天文地球—工程地质学]