钻孔挤压承压型囊式分支桩施工技术研究

摘要

钻孔挤压承压型囊式分支桩施工技术是在原钻孔或沉管成孔灌注桩基础上,充分利用各土层的抗力沿桩身设置多个分支,增加桩侧摩阻力从而提高混凝土桩的承载力.本文介绍了钻孔挤压承压型囊式分支桩施工技术原理、技术特点、施工工艺要点等,为类似的工程提供一定的技术指导.%The construction technology of drilling and compression-type bladder-type branch piles is based on the original drilling or sinking of the hole into the pile foundation,make full use of the resistance of the soil along the pile set a number of branches to increase thepile side friction to improve the bearing capacity of concrete piles.This paper introduces the construction principle,technical characteristics and main points of the construction technology of the drilling and compression type compression pile,and provides some technical guidance for similar projects.