考虑桩体变形的最小势能边坡稳定性分析方法  

STABILITY ANALYSIS OF SLOPE WITH MINIMUM POTENTIAL ENERGY CONSIDERING PILE DEFORMATION

作　　者：温树杰[1,2] 宋亮亮[1] 梁超[1] 

机构地区：[1]江西理工大学建筑与测绘工程学院,江西赣州341000 [2]江西省环境岩土与工程灾害控制重点实验室,江西赣州341000

出　　处：《工业建筑》2017年第6期90-94,共5页Industrial Construction

基　　金：国家自然科学基金项目(51304084);江西省自然科学基金项目(2015BAB206026);江西省交通厅科技项目(2016C0006)

摘　　要：最小势能法是基于系统平衡时势能最小的边坡稳定性分析方法,因而势能的准确求解对计算结果的可靠性至关重要。针对抗滑桩三维加固边坡,考虑了由于桩土相互作用下桩体沿着边坡潜在滑动方向产生的转角变形,进而求得桩土相互作用下桩体以及桩土接触处的势能,然后基于最小势能原理建立抗滑桩加固边坡稳定性分析模型,并得到了与传统分析方法较为一致的结果;同时分析研究了抗滑桩在不同力学参数和边坡类型条件下对边坡安全系数的影响。研究结果表明:抗滑桩弹性模量对安全系数影响不明显;边坡横向相对半径大于4时,抗滑桩对边坡的安全系数影响较小。The minimum potential energy method is based on the stability analysis of slope with minimum potential energy when the system is in balance,so the accurate solution of potential energy to relability of calculating results is rucial. For the 3D reinforced slope with slide-resistant piles,considering the rotational deformation caused by the pile along the potential sliding direction of the slope based on pile-soil interaction,the potential energy of the pile and the pile-soil interface under pile-soil interaction was obtained,and the stability analysis model of reinforced slope with slide-resistant piles was established based on the principle of minimum potential energy. Compared with the traditional method of calculating slope stability method,the results were relatively consistent with other analysis methods. The effect of different mechnical parameters and slope types on the safety factor of slope were also studied.The results showed that the elasticity modulus had little influence on the safety factor; when the transverse relative radius of slope was greater than 4,the effect of slide-resistant piles on the safety factor of slope was not significant.

关 键 词：最小势能 抗滑桩 三维加固边坡 桩土相互作用 安全系数 

分 类 号：TU753[建筑科学—建筑技术科学]