武汉地区三级阶地粘性土热物理性质试验研究  

Experimental Study on Thermal Property of Clayey Soil in Three-Stage Terrace of Wuhan District

作　　者：朱帆济 袁灿勤[2] 舒武堂 王想勤[4] 代昂 

机构地区：[1]武汉市政工程设计研究院有限责任公司,武汉430015 [2]南京工业大学土木工程学院,南京210009 [3]武汉市建设工程设计审查办公室,武汉430015 [4]广州市城市规划勘测设计研究院,广州510060

出　　处：《建筑科学》2011年第5期46-49,53,共5页Building Science

摘　　要：研究粘性土热物理性质与温度、密度、含水量及孔隙比等参数间的关系。在武汉地铁详勘阶段,采取三级阶地粘性土原状土样26组,在不同室温下进行热物理性质试验,同时测试土样的含水量及密度。结果表明:测试温度对原状土样导热系数及比热容的影响较小;粘性土导热系数随原状土样密度的增加而增加,随孔隙比的增加而降低;比热容随原状土样含水量的增加而增加。并给出便于工程使用的导热系数及比热容计算公式。It is very important to make research on the relationship of thermal property with temperature,density,moisture content and void ratio of clayey soil.During the detailed explored phase of Wuhan metro engineering,experiment of thermal property and soil test were conducted under different temperatures by taking undisturbed 26 samples of clayey soil in three-stage terrace.Experimental studies prove that temperature during testing influences results slightly;thermal conductivity increases with increases of density and decreases with increases of void ratio specific heat increases with increase of moisture content increasing.Empirical formulas are given to calculate the thermal conductivity and specific heat,which is easy to operate in engineering design.

关 键 词：热物理性质 粘性土 含水量 密度 温度 孔隙比 

分 类 号：TU443.1[建筑科学—岩土工程]