CAJ | 학술논문

研究了有/无遮挡条件对自然环境中一维混凝土内微环境温度响应的影响规律。基于傅立叶传热原理和第三类边界条件，推导出2种工况下的一维混凝土内微环境温度响应模型，并利用现场试验结果论证了所建模型的合理性；此外，还提出了利用实测结果求解混凝土的热扩散系数和表面换热系数等参数的方法。试验结果表明：所构筑的不同工况条件下的混凝土内微环境温度响应模型可表征混凝土内微环境温度响应变化规律，其理论拟合曲线与实测结果基本吻合；有/无遮挡条件对混凝土内微环境温度响应影响较大，主要体现在温度响应波幅、极值和出现时间等方面，这是因为主导混凝土与环境间的换热方式不同；基于理论推导和实测结果所解出的混凝土热扩散系数和表面换热系数等参数的精度较高。
연구료유/무차당조건대자연배경중일유혼응토내미배경온도향응적영향규률。기우부립협전열원리화제삼류변계조건，추도출2충공황하적일유혼응토내미배경온도향응모형，병이용현장시험결과론증료소건모형적합이성；차외，환제출료이용실측결과구해혼응토적열확산계수화표면환열계수등삼수적방법。시험결과표명：소구축적불동공황조건하적혼응토내미배경온도향응모형가표정혼응토내미배경온도향응변화규률，기이론의합곡선여실측결과기본문합；유/무차당조건대혼응토내미배경온도향응영향교대，주요체현재온도향응파폭、겁치화출현시간등방면，저시인위주도혼응토여배경간적환열방식불동；기우이론추도화실측결과소해출적혼응토열확산계수화표면환열계수등삼수적정도교고。
The response law of micro environmental temperature in one dimensional concrete under the natural environment with/without shelter was studied.Based on the Fourier heat conduction equation and third boundary condition,the response mode of micro environmental temperature in one dimensional con-crete under the natural environment was inferred,and the test was carried out to testify the rationality of the mode.In addition,a new method was summarized to solve the parameters,such as thermal diffusion coefficient and surface heat transfer coefficient.The results show that the modes of micro environmental temperature in one dimensional concrete under different conditions were fitted to describe the temperature response law in concrete.The response laws were observably affected by the condition of with/without shelter,and the differences were manifested in the amplitude,extremum and occurrence time,which was caused by the difference of the heat exchange pattern.The parameters,such as the thermal diffusion coef-ficient and surface thermal conductance,which was inferred from the test,are high precision.