松浦大桥钢板桩围堰法封底混凝土冬期施工关键技术  

Winter Construction Techniques for Bottom Sealing Concrete of Steel Sheet Pile Cofferdam Cofferdams of Songpu Bridge

作　　者：姚天宇 万利军[2] 

机构地区：[1]哈尔滨市市政工程设计院,哈尔滨市150000 [2]东北林业大学工程咨询设计研究院,哈尔滨市150040

出　　处：《北方交通》2015年第10期11-15,共5页Northern Communications

摘　　要：结合哈尔滨松浦大桥主墩基础冬季施工,综合考虑桥位实际地质状况,运用多因素比较法探究了钢板桩围堰法在浅水作业区的优势,通过五个实际工况确定了钢板桩围堰合理的入土深度与结构形式;将封底混凝土在江水中的同条件试验指标对施工的相关影响进行了分析,通过详尽的测点布设方案与一系列寒区冬施保证措施积极指导施工展开;针对围堰抽水后的渗水点,提出一种先平衡水压后压浆的堵漏技术,部分方案与施工措施可为同类工程提供有益借鉴。By means of the winter footing construction of Harbin Songpu Bridge, research into the advantage of steel sheet pile cofferdam working into the shallow water area,fix a reasonable steel sheet pile cofferdam structure, analyze the impact on construction about relevant indicators of bottoming concrete test, layout the sensors in a reasonable mode, guide winter construction in the more cost - effective way o Measure of water pressure should be balanced first before grouting is suggested to avoid the seepage on cofferdam~ Some of the results in this article are of value to similar projects.

关 键 词：桥梁工程 基础 冬季施工 钢板桩围堰 封底 压浆堵漏 

分 类 号：U455[建筑科学—桥梁与隧道工程]