钻孔桩桩底压力灌浆在工程中的应用  

Bored pile at the end of the pressure grouting in engineering

作　　者：王旭亮 楼元仓 焦凯 杨德才 

机构地区：[1]温州市勘察测绘研究院

出　　处：《工程勘察》2009年第S2期405-413,共9页Geotechnical Investigation & Surveying

摘　　要：在钻孔灌注桩桩基施工中,遇桩底虚土厚度大,影响桩的承载力,而采用桩端压力灌浆的施工工艺解决了这一难题,实践证明,该工艺在工程中使用效果良好,是混凝土灌注桩桩端加固的有效方法。本文介绍了桩底压力灌浆工艺,结合工程实例,分析了后压浆技术提高桩摩擦力和端承力的机理。试桩结果和分析表明,压力灌浆法是提高钻孔灌泣桩承载力的有效方法,值得大力推广。Bored pile foundation construction,the case of virtual pile at the end of the thickness of soil,the impact of the pile bearing capacity,and the use of pressure grouting pile of construction technology to solve this problem,practice has proved that the technique works in the use of effective To deal with piles of concrete piles at the end of empty land in an effective manner.This article describes the side of the pile,piling pressure on the grouting process and the end results of the analysis of post-grouting technology to improve friction pile and load-side mechanism.

关 键 词：钻孔灌注桩 压力灌浆 静载荷试验 承载力 

分 类 号：TU753.3[建筑科学—建筑技术科学]