摘要
本文通过静载荷试验和桩身轴力测试，对比分析了普通灌注桩及桩底后注浆灌注桩的承载性状，发现软土地区桩底后注浆技术能改善灌注桩桩端和桩侧土层特性，增加桩侧摩阻力和桩端阻力，使单桩承载能力得到明显提高，其主要表现为桩侧摩阻力的提高。
Through static load test and pile axial force testing, this article compares and analyses the bearing prop. erties of ordinary grouting pile and post - grouting pile on the bottom. It is found that the post - grouting technique on the bottom can improve the soil layer property of the pile tip and pile - side in soft soil area, so as to increase the carrying capacity of single pile, which is mainly to improve the pile - side resistance.
关键词
软土
桩底后注浆
静载荷试验
桩身轴力测试
桩侧摩阻力
soft soil
post - grouting on pile bottom
static load test
pile axial force testing
pile - side resistance
