典型文献
Vertical temperature gradients of concrete box girder caused by solar radiation in Sichuan-Tibet railway
文献摘要：
Spatial and temporal temperature variations are critical for concrete box girders, and non-uniform temperature distributions induced by solar radiation depend on the structural shapes and shadows cast on them. There have been many studies of temperature distributions and temperature gradients of concrete box girders, but few have considered a high altitude plateau climatic environment. In this study, the nonlinear temperature distributions of concrete box girders in the Sichuan-Tibet railway caused by solar radiation were investigated based on experimental analysis, real-time shadow-selection algorithm, and finite element method. Furthermore, a vertical temperature gradient model of the concrete box girders was obtained. The vertical temperature gradient values first rise, then decrease, and finally rise again from Chengdu to Lhasa, with samples forming a normal distribution. The recommended vertical temperature gradient value was 25℃with a confidence interval of 95％. This provides a reference for the design and maintenance of concrete box girders on the Sichuan-Tibet railway.
文献关键词：
中图分类号：
作者姓名：
Tao SHI;Xing-wang SHENG;Wei-qi ZHENG;Ping LOU
作者机构：
School of Civil Engineering,Central South University,Changsha 410075,China;National Engineering Research Center of High-Speed Railway Construction Technology,Changsha 410075,China;MOE Key Laboratory of Engineering Structures of Heavy Haul Railway,Central South University,Changsha 410075,China
文献出处：
引用格式：
[1]Tao SHI;Xing-wang SHENG;Wei-qi ZHENG;Ping LOU-.Vertical temperature gradients of concrete box girder caused by solar radiation in Sichuan-Tibet railway)[J].浙江大学学报（英文版）（A辑：应用物理和工程）,2022(05):375-387,中插1-中插15
A类：
girders
B类：
Vertical,temperature,gradients,concrete,box,caused,by,solar,radiation,Sichuan,Tibet,railway,Spatial,temporal,variations,are,critical,uniform,distributions,induced,depend,structural,shapes,shadows,cast,them,There,have,been,many,studies,few,considered,high,altitude,plateau,climatic,environment,In,this,study,nonlinear,were,investigated,experimental,analysis,real,selection,algorithm,finite,element,method,Furthermore,vertical,model,was,obtained,values,first,rise,then,decrease,finally,again,from,Chengdu,Lhasa,samples,forming,normal,recommended,confidence,interval,This,provides,reference,design,maintenance
AB值：
0.502472
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