浅析独塔斜拉桥深水中超大型承台的施工控制  

Brief analysis on construction control of super large pile caps in deep water of single pylon cable-stayed bridge

作　　者：舒昌信 SHU Changxin(Hunan Hetian Engineering Project Management Co.,Ltd.,changsha410082,Hunan,China)

机构地区：[1]湖南和天工程项目管理有限公司,湖南长沙410082

出　　处：《工程建设》2021年第12期50-56,共7页Engineering Construction

摘　　要：根据主跨桥墩所处水文地质情况及施工成本控制的特点,某独塔斜拉桥主跨主墩水中超大型承台采用钢板桩围堰进行施工。为确保钢板围堰的施工质量与安全,本文以钢板桩围护结构逐层整体下放及钢板桩支撑逐层拆除体系转移受力验算作为该桥深水中超大型承台的关键控制工序,并得以成功应用。本文成果可为类似深水中桥梁承台施工方法提供一定的借鉴及参考。According to the hydrogeological situation of the main span bridge pier and the characteristics of construction cost control, steel sheet pile cofferdam is used to construct the super large pile cap in the water of the main pier of a single pylon cable-stayed bridge.In order to ensure the construction quality and safety of steel plate cofferdam, in this paper, the key control procedures of super large pile caps in deep water are as follows: the steel sheet pile retaining structure is put down one by one and the steel sheet pile support is removed one by one, and the procedures are used successfully.The results can provide references for similar construction methods of bridge caps in deep water.

关 键 词：独塔斜拉桥 钢板桩围堰 逐层整体下放 转移受力验算 施工控制 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]