考虑日照影响的环境温度作用谱修正方法  

Revised Method of Temperature Action Spectrum in Natural Climate Environment with Consideration of Sunlight Exposure

作　　者：蒋建华[1] 袁迎曙[2] 

机构地区：[1]河海大学土木与交通学院,江苏南京210098 [2]中国矿业大学力学与建筑工程学院,江苏徐州221116

出　　处：《建筑材料学报》2014年第1期78-83,共6页Journal of Building Materials

基　　金：国家自然科学基金资助项目(50878207);河海大学中央高校基本科研业务费专项资金资助项目(2012B02614);中国博士后科学基金面上项目(2013M531265)

摘　　要：为了建立自然气候环境温度作用的定量模式,首先探讨了自然气候环境温度变化规律、混凝土内部微环境温度响应滞后特征以及自然气候环境温度作用谱构筑方法,然后研究了日照对混凝土表面温度的影响,最后提出了无遮挡条件下自然气候环境温度作用谱的修正方法,并通过对自然气候环境无遮挡条件下混凝土内部微环境温度响应的预测来验证该修正方法的可行性.结果表明:日照作用下混凝土表面温度基本高于大气温度;可以采用气温日较差R_m指标来衡量日照作用大小;随着R_m的增大,混凝土表面温度增量呈线性增加;以修正环境温度作用谱预测自然气候环境无遮挡条件下混凝土内部微环境温度响应时,预测精度得到提高,因此该修正方法具有可行性.In order to establish the quantitative model of temperature action in natural climate environment, the law of temperature change in natural climate environment, the lag characteristics of temperature re- sponse of micro-environment inside concrete and the method to establish the temperature action spectrum in natural climate environment were explored first. Then the influence of sunlight exposure on the temper- ature of concrete surface was studied. Finally, the revised method to obtain temperature action spectrum in natural climate environment under unsheltered condition was put forward, and its feasibility was verified through an example of the prediction of temperature response of micro-environment inside concrete in natu ral climate environment under unsheltered condition. The results show that the temperature of concrete surface is basically higher than air temperature under the action of sunlight. The diurnal temperature range （Rm） can be used as an indicator of sunlight intensity, and the temperature increase of concrete surface in- creases linearly with the increase of Rm. The prediction accuracy of temperature response of micro-environ- ment inside concrete in natural climate environment under unsheltered condition is improved when the re- vised action spectrum of environmental temperature is used, so the revised method is feasible.

关 键 词：自然气候 混凝土 温度 作用谱 日照 

分 类 号：TU528.0[建筑科学—建筑技术科学]