软岩嵌岩桩后注浆技术对单桩竖向极限承载力的影响

Effect of Post Grouting Technology on Vertical Ultimate Bearing Capacity of Single Pile in Soft Rock-Socketed Pile

通过具体工程案例,对采用后注浆施工技术的软岩嵌岩灌注桩与常规的软岩嵌岩灌注桩(非后注浆技术的软岩嵌岩灌注桩)进行单桩竖向抗压静载试验,来分析比较它们的单桩竖向极限承载力和沉降量的区别。得到的结论是,采用后注浆施工的软岩嵌岩灌注桩比常规的软岩嵌岩灌注桩单桩竖向极限承载力高,桩的沉降量小,可为同类工程提供参考。

In this paper,the vertical compressive static test of single pile was carried out by using post grou-ting technique in soft rock-socketed cast-in-place pile and conventional soft rock-socketed cast-in-place pile(non-post grouting technology soft rock rock-socketed cast-in-place pile)with the concrete project case.Thevertical ultimate bearing capacity of single pile and the difference of settlement were analyzed and compared.The conclusion was that the soft rock embedded pile with the post grouting construction improved the verticalultimate bearing capacity of the single pile and reduced the sinking of the pile compared with the conventionalsoft rock-socketed cast-in-place pile.It provides reference for similar projects.