【摘要】 结合现场灌浆试验 ,介绍了桩侧、桩底压力灌浆工艺及效果 ,分析了后压浆技术提高桩摩擦力和端承力的机理。试验表明 ,桩底后压浆技术可作为提高钻孔桩承载力的有效措施。更多还原

【Abstract】 Based on the full scale pile tests of Xinxiang and Ligou bridges in situ.,this paper illustrates process and effects of base pressure grouting and pressure grouting along pile.The mechanism of improving the end bearing resistance and of frictional resistance of a bored pile by the post grouting is analyzed in this paper,the results of the tests show that the toe pressure post grouting may be used as a useful measure for raising the bearing capacity of the bored pile.更多还原