裸岩斜坡面组合围堰设计与施工技术研究  

Design and Construction Technology of Composite Cofferdam on Slope Surface of Bare Rock

作　　者：杨圣峰 刘大成 任初君 张志鸿 YANG Shengfeng;LIU Dacheng;REN Chujun;ZHANG Zhihong(China First Highway Engineering Co.,Ltd.,Beijing100024,China;The Eighth Engineering Co.,Ltd.of China First Highway Engineering Co.,Ltd.,Tianjin300170,China)

机构地区：[1]中交一公局集团有限公司,北京100024 [2]中交一公局第八工程有限公司,天津300170

出　　处：《施工技术(中英文)》2025年第6期116-120,共5页Construction Technology

基　　金：国家重点研发计划专项(2023YFA1008904);中交一公局集团有限公司科技研发项目(KJYF⁃2022⁃A⁃01)。

摘　　要：为保证观音峡嘉陵江特大桥右幅14号墩桩基与承台施工安全,并在5个月工期内完成桩基与承台施工,且墩柱施工出水的要求,对14号墩围堰进行专项设计,最终采用筑岛+咬合桩+单壁套箱组合围堰结构形式。借助有限元分析软件MIDAS Civil,对14号墩组合围堰整体建模分析,得出了各施工工况下围堰整体结构的应力及变形结果。计算结果及实践经验表明,筑岛+咬合桩+单壁套箱组合围堰整体结构安全可靠,且施工速度快,满足了工期要求,证明了所选围堰结构形式合理性。In order to ensure the safety of pile foundation and bearing platform construction of right No.14 pier of Guanyinxia Jialingjiang Super Large Bridge,and meet the requirements of pile foundation and bearing platform construction completed within five months,the cofferdam of No.14 pier is specially designed,and finally the combined weir structure of island building,secant pile and single wall casing is adopted.With the help of finite element analysis software MIDAS Civil,the integral modeling analysis of No.14 pier composite cofferdam is carried out,and the stress and deformation results of the whole cofferdam structure under various construction conditions are obtained.The calculation results and practical experience show that the overall structure of the composite cofferdam is safe and reliable,and the construction speed is fast,which meets the requirements of the construction period,and confirms the rationality of the selected cofferdam structure.

关 键 词：桥梁 裸岩 斜坡面 咬合桩 组合围堰 有限元分析 设计 施工技术 

分 类 号：U445[建筑科学—桥梁与隧道工程]