黄土地区墓坑处理及复合地基变形分析

The treatment on grave pit soil in loess foundation and analysis on bearing weight capacity and deformability of single pile composite foundation

通过西安地区黄土地基某工程实例 ,介绍了墓坑地基的处理 ,对处理过的墓坑应注意验收 ;整片钻孔夯扩碎石桩二次加固地基后 ,通过在墓坑和天然土上做单桩复合地基静载试验 ,并在沉降曲线和复合地基变形模量两个方面进行对比分析 ,指出了它们的承载变形性状差异 ,建议对未处理墓坑位置第三次加固并验收 ;

Combined the actual loess foundation engineering example in xi an area, the author states two key points: 1. the treatment method on grave pit soil, 2. acceptance treated grave pit foundation. By the dead load test on single pile composite foundation above grave pit and natural soil after the second consolidation foundation with full wafer boring gravel pile, the settlement curve and composite foundation deformation modulus are studied and compared. The difference of bearing weight capacity and deformability is obtained. Carrying the third consolidation and acceptance on untreated grave pit location is suggested. Finally aimed at the treatment effect some existent problems and feasible suggestions are given.