软土地质大直径超长钻孔灌注桩施工关键技术研究  

Research on Key Technology of Construction of Large-diameter Extra-long Bored Piles in Soft Soil Geology

作　　者：蔡鹏 CAI Peng(Shanghai Foundation Engineering Group Co.,Ltd.,Shanghai 200002,China)

机构地区：[1]上海市基础工程集团有限公司,上海200002

出　　处：《建筑施工》2022年第3期435-437,共3页Building Construction

基　　金：软土地基自适应锚碇悬索桥施工关键技术研究(21DZ1202905)。

摘　　要：嘉松公路越江新建工程位于上海市黄浦江上游,主桥为一座跨径336 m的自锚式悬索桥,桩基采用钻孔灌注桩形式。工程所处位置为典型的软土地质,包含淤泥、粉细砂等各类不利于桩基施工的土层形式。以嘉松公路主桥桩基首根试桩施工过程为例,对软土地质下大直径钻孔施工的各项关键控制要点进行了研究,可为类似工程的开展提供参考。The new cross river Jiasong Highway project is located in the upper reaches of Huangpu River in Shanghai.The main bridge is a self-anchored suspension bridge with a span of 336 m,and the pile foundation is in the form of bored piles.The location of the project is typical of soft soil geology,including silt,fine sand and other types of unfavorable soil formations for pile foundation construction.The construction of the first test pile for the pile foundation of the main bridge on the Jiasong Highway is used as an example to study the key control points for the construction of large diameter bored piles in soft soil geology,which can provide reference for similar projects.

关 键 词：自锚式悬索桥 软土地质 大直径 钻孔灌注桩 

分 类 号：TU753[建筑科学—建筑技术科学]