抗滑桩在加固边坡稳定性中的应用及影响分析  

Analysis on application of slide-resistant pile to reinforcement of slope stability and its effect

作　　者：代凌辉[1,2] 张胤 李建[1,2] 

机构地区：[1]黄河水利职业技术学院,河南开封475004 [2]小流域水利河南省高校工程技术研究中心,河南开封475004 [3]南京市水利规划设计院有限责任公司,江苏南京210006

出　　处：《水利水电技术》2016年第12期52-55,65,共5页Water Resources and Hydropower Engineering

基　　金：河南省高等学校青年骨干教师资助项目(2013GGJS-197);河南省基础与前沿技术研究项目(162300410053)

摘　　要：为保证河道边坡稳定及行洪能力,减少城市用地,研究挡墙与抗滑桩相结合的边坡复式断面作为河道断面设计的重点。采用有限元计算软件,建立挡墙与抗滑桩相结合的复式断面数值模型,分析不同桩长、桩径的抗滑桩设计与安全系数之间的变化规律。结果表明,此类边坡的潜在滑弧位置会随着抗滑桩的桩长增加而上移,计算所得安全系数随着抗滑桩桩长的增长,出现先增大后减少的现象,故抗滑桩桩径的设计应结合实际需要综合确定。本研究为类似边坡抗滑桩设计提供参考依据。In order to ensure the slope stability and flood carrying capacity of river channel and reduce urban land use, a com- pound slope section in combination with retaining-wall and slide-resistant pile is studied to be taken as the key point for the design of the river channel section. With the software of finite element, a numerical model for the compound section combined with both retaining-wall and slide-resistant pile is established, and then the changing law between the designs of the slide-resistant piles with various length and diameters and their safety coefficients is analyzed. The result shows that the potential location of the slid- ing surface of this kind of slope is to move upward along with the increase of the length of the pile, while the calculated safety co- efficient is to be increased along with the pile length with a phenomenon of increasing at first and then decreasing, thus the de- sign of slide-resistant pile is to be comprehensively determined in combination with the actual demand. This study provides a ref- erence for the design of the similar slide-resistant pile for slope.

关 键 词：安全系数 有限元模型 抗滑桩 边坡 优化设计 

分 类 号：P642[天文地球—工程地质学]