预应力钢筋混凝土管桩拔桩机研制  

Development of prestressed reinforced concrete pipe pulling machine

作　　者：吴林峰[1] 耿明全[2] 李成[3] 

机构地区：[1]华北水利水电学院,郑州450011 [2]河南黄河河务局,郑州450003 [3]黄河水利委员会黄河机械厂,郑州450006

出　　处：《中国水利》2009年第22期48-50,共3页China Water Resources

基　　金：水利部公益性行业科研专项资助"黄河下游移动式不抢险潜坝应用研究"(任务书编号:200701047)

摘　　要：拔桩机就是将打入黄河滩面下的垂直预应力钢筋混凝土管桩无损伤拔出而实现潜坝移动的专用机械,其工作原理是利用高压水射流冲击破坏土层,形成桩体周围水土混合液,将管壁与其周圈泥分离,最大限度地减小拔桩摩阻力和下吸力后,利用吊车将桩体自井孔内吊出。该设备适合砂地层和软土地层,根据管桩不同直径选用不同规格的拔桩机,桩距不限。Pile pulling machine is a kind of special machine for pulling the vertical prestressed reinforced concrete pipe piles without damaging, so as to move the submerged dam. The working principle is to form water-soil mixture around the pipe piles with high-pressure water jet flow, and to separate pipe wall and mud, and then pulling the pipe from the borehole by the hoist after friction, which pulling forces are minimized as much as possible. The machine is adaptable to sandy and soft land and pile spacing can be selected freely based on the diameter of pipe pile and speci-fications of the machine.

关 键 词：移动式不抢险潜坝 射流 拔桩机 管桩 原理 结构 

分 类 号：TV553[水利工程—水利水电工程]