桥梁钻孔灌注桩桩端后压浆承载特性分析

Analysis of bearing characteristics of post-grouting at the end of bored pile of bridge

为检验钻孔灌注桩后压浆加固效果,结合施工现场工程地质情况,布置试桩开展静载试验分析单桩承载力、桩侧阻力、桩端阻力的变化规律。通过分析试验数据,得出采用桩顶后压浆处理的桩体在承载力、桩侧阻力、桩基沉降等方面都得到了明显的改善,加固效果明显。

In order to test the reinforcement effect of grouting after bored pile,combined with the construction site engineering geological conditions,test piles were arranged to carry out static load test to analyze the variation rules of bearing capacity of single pile,pile side resistance and pile tip resistance.Through the analysis of the test data,it is concluded that the pile after grouting is improved obviously in bearing capacity,pile side resistance,pile foundation settlement and other aspects,and the reinforcement effect is obvious.