孔压静探模型槽试验和室内固结试验求取土的固结系数的对比  

Comparative Study of Consolidation Coefficients Determined by CPTU in Chamber and Laboratory Tests

作　　者：何风雨[1] 陈建明 

机构地区：[1]中国地质大学工程学院,武汉430074 [2]湖南煤田地质局第二勘探队,湖南涟源417100

出　　处：《安全与环境工程》2004年第4期87-91,共5页Safety and Environmental Engineering

基　　金：国家自然科学基金项目 (4 0 172 0 90 )

摘　　要：土的固结系数是软土地基计算与处理设计中的关键参数 ,本文将孔压静探模型槽试验求出的固结系数和室内固结试验所求固结系数 ,进行了对比分析 ,发现前者比后者所得结果相差一到两个数量级 ,并详细论述了孔压静探求取固结系数的原理及步骤。The consolidation coefficient of soil is the key parameter for soft soil improvement calculation and design. It can be determined by both piezocone penetration test (CPTU) and laboratory consolidation test. So the comparative research with the two tests is carried out. The results have shown that the coefficient determined by CPTU in the chamber is higher than that in the lab consolidation test by 10 to 100 times. The principle and the methods to determine the coefficient by CPTU are also presented.

关 键 词：固结系数 孔压静探 模型试验 

分 类 号：X833[环境科学与工程—环境工程]