CAJ | 학술논문

对于浅层岩土热物性参数测试中常用的实验室和现场热响应试验方法，结合上海某工程的实际情况，提出一种基于室内试验的岩土综合热物性参数确定方法。首先，根据室内、外试验测试结果的差异，选取地层厚度、含水率、密度及渗透系数作为影响二者热物性参数测试差异的主要因素，使用层次分析法确定各影响因素的权值，并按权值大小修正室内热物性参数测试结果。然后，分别模拟室外现场热响应试验和修正后的室内热物性参数以及实际地层的传热过程，得出三者在热量传导能力之间的差距分别为1．2％、1．1％及2．3％。最后，提出埋管深度和导热系数的乘积可代表岩土层的换热能力，且计算出修正后的室内热物性参数对应的均一导热系数与现场热响应试验测出的综合导热系数分别为1．832 W/（m ·℃）和1．778 W/（m ·℃）。
대우천층암토열물성삼수측시중상용적실험실화현장열향응시험방법，결합상해모공정적실제정황，제출일충기우실내시험적암토종합열물성삼수학정방법。수선，근거실내、외시험측시결과적차이，선취지층후도、함수솔、밀도급삼투계수작위영향이자열물성삼수측시차이적주요인소，사용층차분석법학정각영향인소적권치，병안권치대소수정실내열물성삼수측시결과。연후，분별모의실외현장열향응시험화수정후적실내열물성삼수이급실제지층적전열과정，득출삼자재열량전도능력지간적차거분별위1．2％、1．1％급2．3％。최후，제출매관심도화도열계수적승적가대표암토층적환열능력，차계산출수정후적실내열물성삼수대응적균일도열계수여현장열향응시험측출적종합도열계수분별위1．832 W/（m ·℃）화1．778 W/（m ·℃）。
T he authors propose a method to determine synthetically geotechnical thermal physical parameters according to laboratory experiments for a certain project in Shanghai .Based on discrepancy of testing results between laboratory and field test ,formation thickness ,water ratio ,density and osmotic coefficient are chosen as primary factors that affect difference of thermal physical parameters between laboratory testing and field testing . And the weighted values of every factor are determined using analytic hierarchy process (AHP ) ,which are used to modify testing results of thermal physical parameters in laboratory . Furthermore the authors simulate field and modified laboratory thermal physical parameters simulates and practically heat transferring ,respectively .It shows that the discrepancy of heat conduction capacity are 1 .2% ,1 .1% and 2 .3% for three conditions . T he heat transfer capacity can be reoresented by the value of product of pipe depth multiplied by thermal conductivity .Uniform thermal conductivity computed by modified parameters of laboratory is basically equal to comprehensive thermal conductivity tested by field thermal response test ,w hich are 1 .832 W/(m · ℃) and 1 .778 W/(m · ℃) respectively .