CFG桩采用长螺旋钻管内泵压灌注成桩施工工艺

Construction Technique of CFG Pile of Pumping Concrete in Pipe to Form Pile with Long Auger

研究目的:为了提高路基地基的承载力,减少路基的工后沉降,武广客运专线无砟轨道铁路基底大量采用CFG桩进行加固处理,通过本文研究使CFG桩施工更加规范。研究结果:采用长螺旋钻成孔管内泵压混凝土成桩的施工工艺,取得明显的效果,并及时处理施工过程中出现的问题,为大面积CFG桩施工提供依据,编制了CFG桩采用长螺旋钻管内泵压灌注成桩的施工工艺。

Research purposes: Lots of CFG piles are adopted in construction of Wuchang-Guangzhou Passenger Dedicated Line to reinforce the foundation of Bllastless track for purposes of enhancing the bearing capacity of railway subgrade,reduce the post-construction subsidence of the subgrade and make CFG pile construction more normalized. Research results:The perfect achievements in solving the problems in construction have been obtained by adopting the construction technique of pumping concrete in pipe to form pile w...