邵阳学院学报(自然科学版)
邵暘學院學報(自然科學版)
소양학원학보(자연과학판)
JOURNAL OF SHAOYANG UNIVERSITY(NATURAL SCIENCE)
2014年
3期
46-50
,共5页
日照温度场%混凝土箱梁%温度时程变化%温差分布
日照溫度場%混凝土箱樑%溫度時程變化%溫差分佈
일조온도장%혼응토상량%온도시정변화%온차분포
sunshine temperature field%concrete box girder%time course changes of temperature%temperature difference distribu-tion
混凝土箱梁的日照温度场可通过理论分析并进行仿真分析,建立箱梁的有限元分析模型,对箱梁的日照温度场进行仿真分析,分别对箱梁各结构面温度的时程变化和各结构面的温差分布情况进行分析.分析结果表明,顶板、底板、腹板外表面的最高温度均出现在14:00,各板内表面的出现最高温度相对于外表面存在滞后,出现时刻为20:00.箱梁各板在日照作用下会出现相应的横向温差,沿梁高方向的竖向温差在14:00达到15.69℃.
混凝土箱樑的日照溫度場可通過理論分析併進行倣真分析,建立箱樑的有限元分析模型,對箱樑的日照溫度場進行倣真分析,分彆對箱樑各結構麵溫度的時程變化和各結構麵的溫差分佈情況進行分析.分析結果錶明,頂闆、底闆、腹闆外錶麵的最高溫度均齣現在14:00,各闆內錶麵的齣現最高溫度相對于外錶麵存在滯後,齣現時刻為20:00.箱樑各闆在日照作用下會齣現相應的橫嚮溫差,沿樑高方嚮的豎嚮溫差在14:00達到15.69℃.
혼응토상량적일조온도장가통과이론분석병진행방진분석,건립상량적유한원분석모형,대상량적일조온도장진행방진분석,분별대상량각결구면온도적시정변화화각결구면적온차분포정황진행분석.분석결과표명,정판、저판、복판외표면적최고온도균출현재14:00,각판내표면적출현최고온도상대우외표면존재체후,출현시각위20:00.상량각판재일조작용하회출현상응적횡향온차,연량고방향적수향온차재14:00체도15.69℃.
The solar temperature field in concrete box girder can simulate through theoretical analysis. Build a finite analysis model carries on the simulated analysis of solar temperature field in concrete box girder,analysis the box girder structure surface temperature's time course changes and the structure surface's temperature distribution respectively. The results of the analysis indicate that the maximum temperature in roof bottom and web are occur in 14:00,the maximum temperature in internal surface of each plate are behind the external surface relatively,it occur in 20:00,under effect of sunshine,each plate will occur transverse temperature difference corre-spondingly,the vertical temperature differences in along depth direction of box girder reach 15. 69℃ at 14:00.