摘要
依托山西某电厂项目地基处理工程实例,进行了灰土挤密桩桩周土挤密效果的试验,根据实测桩周土体径向位移、土压力、干密度、单桩复合地基承载力静载荷等试验数据,分析表明:DDC桩法桩周土体(距桩中心)有效挤密范围约为0.7D(D为成桩直径),挤密影响范围约为1.5D,处理后单桩复合地基承载力有较大幅度提升,能够满足设计要求。
Based on a foundation treatment engineering project,the compaction effect tests of the soil surrounding piles for lime-soil compaction piles are carried out. According to the testing scheme combined with the measured data of the soil horizontal displacement,earth pressure,dry density and the bearing capacity of single pile from composite foundation static loads to analyze,the analysis results show that under the DDC creating pile method the effective compaction scope（ from the centre of pile） is about 0. 7D（ D is the diameter of pile） and the compaction scope of the soil surrounding pile is about 1. 5D. After the foundation treatment,the bearing capacity of the compound foundation has significant improvement and satisfies the requirement of design.
出处
《工程勘察》
2016年第10期6-9,共4页
Geotechnical Investigation & Surveying
关键词
DDC桩法
土体位移
土压力
挤密系数
DDC pile method
soil displacement
earth pressure
coefficient of compaction
