自平衡法在客专站房工程基桩施工中的应用

Application of Self Balanced Method in Pile Construction of Passenger Special Railway Station

传统的基桩竖向承载力静载试验加载反力装置主要有锚桩横梁反力装置、压重平台反力装置和锚桩压重联合反力装置三种方式。三者均通过反力平台或装置提供反力,通过油压千斤顶在桩顶施加荷载。堆载法受场地和吨位等条件限制,要解决几百甚至上千吨的荷载来源,运输、堆载过程繁琐。锚桩法需设置多根锚桩和反力梁,试验时间长且费用高。基于此,通过结合工程实例,对自平衡法在站房基桩施工中的应用进行了研究。

The traditional vertical hearing capacity of pile static load test load reaction force device main anchor beam reaction force device weights platform reaction force device and anchor weights joint reaction force device three modes. Through all these three reaction force platform or device to provide reaction force through hydraulic jack load is applied at the top of the pile, pile load method subject to site conditions and tonnage, etc., to solve hundreds or even thousands of tons of load sources, transport, heap load process cumbersome, anchor pile to be set, and a plurality of anchor reaction forces beams, long test time and high cost. Based on this, combined with engineering examples on piles from balance methods are discussed.