h型抗滑桩的分析方法及在滑坡治理工程中的应用  

Analysis Method and Application of h-type Anti-slide Piles in Landslide Treatment Engineering

作　　者：王晨涛[1] 刘欣 张尧禹[1] 沈宇鹏[2] WANG Chentao;LIU Xin;ZHANG Yaoyu;SHEN Yupeng(CCCC Highway Consultants Co.,Ltd.,Beijing 100088,China;School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]中交公路规划设计院有限公司,北京100088 [2]北京交通大学土木工程学院,北京100044

出　　处：《路基工程》2020年第5期132-136,共5页Subgrade Engineering

基　　金：国家重点研发计划资助(2017YFC0805305);中国铁路总公司科技研究开发计划(P2018G004);中央高校基本科研业务费专项资金资助(2020YJS131)。

摘　　要：以滑面为界将h型桩分为阻滑段和锚固段两部分,分别采用受横向推力作用的平面刚架模型和弹性地基梁理论计算抗滑桩结构内力。依托广东某滑坡治理工程,采用桩体内力监测和深孔位移监测研究h型抗滑桩的内力分布特征和坡体变形规律。结果表明:h型抗滑桩内力计算理论值和实测值较吻合,说明该内力分析方法是合理的;施工扰动和强降雨会加剧坡体变形,h型桩抗滑体系构建完成后,坡体位移逐渐趋于稳定。With the sliding surface as the boundary,the h-type pile is divided into the anti-slide section and the anchoring section,and the plane rigid frame model and the elastic foundation beam theory are used to calculate the structural internal force of the anti-slide pile.Based on a landslide treatment project of expressway in Guangdong Province,the distribution characteristics of internal force and slope deformation law of h-type anti-slide pile in the actual engineering are investigated by means of internal force monitoring and deep hole displacement monitoring.The results show that the theoretical value of the internal force of h-type anti-slide pile is consistent with the measured value,which proves that the internal force analysis method is reasonable.The construction disturbance and heavy rainfall will obviously aggravate the slope deformation.After the completion of the h-type pile anti-slide system,the slope displacement gradually tends to be stable.

关 键 词：滑坡治理 h型抗滑桩 阻滑段 锚固段 现场监测 

分 类 号：U417.1[交通运输工程—道路与铁道工程]