圆砾持力层桩端注浆优化效果分析

通过对桐庐望江花园工程的静载试验对比,分析了钻孔灌注桩在持力层桩底注浆或不注浆的承载力和沉降规律,从定量的角度分析了圆砾持力层中注浆对控制基础沉降的优化效果,得出了桩端后注浆技术经济效益和社会效益显著的结论。

Analysis of optimization effect for grouting in pile tip of round pebble bearing stratum

According to the comparison of the static load test in Tongluwangjiang garden project,the paper analyzes the loading stress and settlement of the bored pile in the grouting at pile bottom of bearing beam or without grouting,and indicates the grouting s optimization effect on the control foundation settlement from the aspect of the quantitative,and concludes that the pile-end post-grouting technology has obvious economic and social benefits.