摘要
土体静止侧压力系数K0作为岩土工程设计的一个基本参数,其测定是土工试验的重要内容之一,但长期以来,由于没有试验标准,各试验单位按经验采用不同的加荷稳定时间进行试验,无法提供统一的K0值,设计单位只好靠查表进行K0取值。这很难反映土体的真实应力状况,也不满足优质设计的要求。因此,确定土体K0值的测定试验标准越来越具有必要性,本文简要地介绍了测定K0值的室内试验方法,并进行了测定K0值加荷稳定时间的试验研究,得出了测定上海地区浅层地基土体K0值的试验加荷稳定时间,为确定静止侧压力系数试验标准提供参照。
The determination of the coefficient of lateral earth pressure at rest,K0,which is a basic parameter of geotechnical engineering design,is an important component of the soil technical test.However,because of the lack of test standard,tests are made with different loading stability time according to experiences,and the unified K0 value cannot be supplied for the calculation and design,so K0 value is taken by looking up the table,which neither reflects the true stress condition,nor satisfies the need of high quality design.Consequently,to ascertain the standard of determination test on soil K0 value is becoming more and more essential.This paper briefly introduces the laboratory experiment method for K0 value determination,the loading stability time of K0 value is studied by tests,and test stability time of loading of K0 value of shallow foundation soil in Shanghai area is obtained,from which the reference is provided for the standard of determination test on K0 value.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2010年第6期66-70,共5页
Hydrogeology & Engineering Geology
基金
上海市规划和国土资源管理局资助课题
关键词
静止侧压力系数
加荷稳定时间
试验
coefficient of lateral earth pressure at rest
stability time of loading
experiment
