潮汐环境下箱套安拆及封底施工总结pdf

潮汐环境下箱套安拆及封底施工总结三门湾蛇蟠水道大桥起于六敖镇、跨蛇蟠水道后止于蛇蟠岛景区全长 3119m其中 9-49#墩位于蛇蟠水道内根据承台设计高程及潮汐标高该部分墩位承台常年处于水中因而采用围堰法施工另根据承台底到海床面的净空高度分钢板桩围堰及套箱围堰两种类型。施工期间主要影响因素为每日两涨两落的高低潮及每年 7-9 月份的台风期+汛期【注：根据设计图纸说明桥位百年一遇设计基准风速为 40m/s相当于 13 级风但图纸同时说明桥位处为天然避风锚地无台风正面登陆记录另根据 2015 年、2016 年两年在浙江沿海登陆的台风（两年约 6 次）来看仅在 15 年时有一次使桥位处于 7 级风圈范围内其余几次均未受到强烈影响】。······一、施工参数简介.....................................................................................................................3二、潮汐环境下的套箱安拆.....................................................................................................42.1 潮汐环境下带提吊系统套箱安装施工......................................................................52.1.1 施工流程...........................................................................................................52.1.2 工序总结...........................................................................................................52.2 潮汐环境下无提吊系统套箱安装施工......................................................................82.3 潮汐环境下套箱拆除施工..........................................................................................9三、潮汐环境下的套箱封底.....................................................................................................93.1 封底施工概述..............................................................................................................93.2 封底施工总结............................................................................................................10四、潮汐环境下防止封底混凝土漏水的措施.......................................................................124.1 施工前的预防措施....................................................................................................124.2 施工过程中的控制措施............................................................................................134.3 施工后的补救措施....................................................................................................14五、结语...................................................................................................................................14······img title=潮汐环境下箱套安拆及封底施工总结_1 class=lazy