一种有限空间钢管桩拔桩施工方法

Construction Method for Pile Pulling of Steel Pipe Pile in Limited Space

主要提供一种桥下有限空间水中钢管桩拔出设备及方法。能解决施工栈桥拆除后桥下有限空间所遗留的钢管桩问题,避免钢材浪费,减少项目资金投入,降低行船风险。设备可沿导轨水平移动的热轧滑轮下部配有带孔滑板,使得滑块能在需要的位置以规定扭矩紧固,具有结构简单,操作方便,通过滑轮改变拉力方向,能有效将桥下钢管桩拔出。

This paper mainly introduces a steel pipe pile extraction equipment and method in water in limited space under bridge.It can solve the problem of steel pipe piles left behind in the limited space under the bridge after the construction of the trestle,avoiding steel waste,reducing project capital investment and reducing the risk of shipbuilding.The lower part of the hot rolling pulley which can move horizontally along the guide rail is equipped with a perforated slide plate,so that the slider can be fastened with a predetermined torque at a required position,and it has a simple structure and convenient operation,and the direction of the pulling force is changed by the pulley,and the steel pipe pile under the bridge can be effectively pulled out.