后注浆桩技术(3)——干作业钻孔灌注桩桩端压力注浆工艺

TECHNOLOGY OF POST-GROUTING PILES(3) ——THE CONSTRUCTION TECHNIQUE OF GROUTING AT TIP OF AUGER-DRILLED PILES IN A DRY CONDITIONS

分析降低干作业钻孔灌注桩承载力的施工因素 ,介绍干作业钻孔桩的桩端压力注浆工艺 ,该桩型的施工程序与质量验收 ,以及桩端压力注浆桩的施工特点。

In this paper the construction factors reducing the load\|bearing capacity of auger\|drilled piles in a dry conditions are analysed.The technology of grouting at tip of piles,the construction sequences and the check upon construction qualities of its piles are introduced.The construction characteristics of the piles by tip grouting are also introduced.