综合应用桩和竖向土工材料路堤边坡稳定性的影响研究  

Impact of Comprehensive Application of Piles and Vertical Geotextile Materialson the Embankment Slope Stability

作　　者：许小杰[1] 王路博 宋健[3] XU xiao -jie WANG Lu - bo SONG Jian(Zhejiang institute of Hydraulics ＆ Estuary, Hangzhou 310020, Zhejiang, China Tianjin TEDA Construction Company, Tianjin 300457, China Geotechnical Research Institute, Hohai University, Nanjing 21098, Jiangsu, China)

机构地区：[1]浙江省水利河口研究院,浙江杭州310020 [2]天津泰达建设集团有限公司,天津300457 [3]河海大学岩土工程科学研究所,江苏南京210098

出　　处：《浙江水利科技》2017年第5期59-66,共8页Zhejiang Hydrotechnics

基　　金：浙江省院所专项项目(2016F50003)

摘　　要：利用桩进行软土地基加固时,能够在一定程度上提高路堤边坡的稳定性,但桩间地基土断面的安全系数仍比较低,在桩间植入竖向土工材料后竖向土工材料承受的侧向力和竖向拉力均能提供抗滑力矩,从而提高桩间路堤边坡的稳定性。应用理论方法对综合应用桩和竖向土工材料的路堤边坡安全系数进行了研究,并通过数值模拟发现边坡安全系数随着竖向土工材料的间距降低、植入深度增加和植入数量增加而增加,并且存在竖向土工材料植入的最佳位置。The use of piles can improve the stability of the embankment slope, but the safety factor of the soil between piles section is still relatively low. While after the implantation of vertical geotextile materials between the piles, the vertical geotextile materials＇ lateral and vertical tensile force can provide anti - sliding moment, thereby this can enhance the stability of the embankment slope between piles. When the foundation is processed by the method of comprehensive application of the piles and verticalgeotextile materials, the embankment slope safety factor is studied by the application of theoretical method. Through numerical simulation, the slope safety factor can be improved when the vertical geotextile materials＇ spacing is reduced, the depth is increased or the number is increased, and the best place to implant the vertical geotextile materials can be found.

关 键 词：地基侧向变形 竖向土工材料 桩 数值模拟 边坡稳定 

分 类 号：TV223.21[水利工程—水工结构工程]