桩基承台挡土墙在高填路堤工程中的设计与应用  

Design and Application of Pile Cap Retaining Wall in High-filled Embankment Engineering

作　　者：胡溢 周小军[2] Hu Yi;Zhou Xiaojun(Chongqing Banan Economic Park Development&Construction Co.,Ltd.,Chongqing 401346,China;China Merchants Chongqing Communications Research&Design Institute Co.,Ltd.,Chongqing 400067,China)

机构地区：[1]重庆巴南经济园区建设实业有限公司,重庆401346 [2]招商局重庆交通科研设计院有限公司,重庆400067

出　　处：《市政技术》2022年第5期25-28,188,共5页Journal of Municipal Technology

基　　金：综合科考专项项目(2019QZKK0902)。

摘　　要：桩基承台挡土墙是由钢筋混凝土承台、挡土墙和桩基组成的新型支挡结构。以某城市主干道K0+540.0—K0+742.8段高陡路堤为例,分析了路基处治过程中的关键控制性因素,并基于安全、可实施性和经济合理性原则,对桩基承台和明挖扩大基础重力式挡土墙2个方案进行了比选,最终确定该工程支挡结构采用桩基承台挡土墙方式施工。该处治措施有利于解决地基承载力低和明挖基础面积过大等问题,为临河和存在既有弃方等条件复杂的工程建设提供了参考和借鉴。Pile cap retaining wall is a new type of structure composed by reinforced concrete cap,retaining wall and pile foundation.Taking the high steep embankment of K0+540.0—K0+742.8 section of urban main road as an example,the key controlling factors during subgrade treatment are analyzed.Based on principles of safety,feasibility and economical rationality,retaining wall schemes of pile cap and open-cut foundation are compared.Finally,pile cap retaining wall is determined.It solves the problems of low foundation bearing capacity and large open-cut foundation area and provides references for complex engineering construction of riverside and existing abandonment.

关 键 词：高填路堤 支挡结构 桩基承台 明挖基础 设计 应用 

分 类 号：U416.1[交通运输工程—道路与铁道工程]