钻孔灌注桩桩端桩侧后压浆技术与应用

The post-pressure grouting to the pile tip and pile lateral technology of cast-in-place bored pile and its application

结合典型工程实例,介绍了钢筋混凝土钻孔灌注桩桩端桩侧后压浆技术的原理、方法及应用,在桩身质量达到一定强度的前提下,加入桩端桩侧后压浆工艺,提高单桩及群桩的承载力,对桩的静载试验得出的数据,证明提高承载力30%以上。

With the typical project example, this paper introduces the principle, methodology and application of post-pressure grouting technique to the pile tip and pile lateral of reinforced concrete cast-in-place bored pile. The technology is applied by post-pressure grouting to the pile tip and pile lateral on condition that the pile has certain intensity, so as to increase the bearing capacity of single pile and pile group. Static loading test has proven that the bearing capacity has been increased by more that 30 %.