摘要
研究不同地区日照辐射强度差异对T梁桥温度梯度和力学行为的影响,针对四个典型辐射区分析了辐射强度变化规律,建立了考虑辐射强度和环境条件的T梁日照模型,研究了温度梯度及应力的变化规律,并与现行规范进行了对比,提出了强辐射区温度梯度取值建议。
In order to study the influence of the different solar radiation intensity on the temperature gradient and mechanical behavior of T-beam bridges,this paper analysis the law of solar radiation intensity in the four typical regions with different radiation levels.Furthermore,the solar radiation model of T beam considering radiation intensity and environmental conditions is established.In addition,the temperature gradient and stress change law of T beam in four regions are studied,and the temperature gradient is compared with the current regulations.Finally,the temperature gradient values in areas with strong sun radiation are proposed.
作者
杨敏
李正义
高燕梅
范亮
YANG Min;LI Zhengyi;GAO Yanmei;FAN Liang(Yunnan Jiantou Boxin Engineering Construction Center Test Co.,Ltd.,Kunming 650599,China;School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China)
出处
《低温建筑技术》
2020年第11期33-37,共5页
Low Temperature Architecture Technology
基金
国家自然科学基金(51778094)
云南省交通运输厅科技项目(云交科教〔2018〕28号)。
关键词
T梁桥
高辐射地区
日照辐射强度
温度梯度
力学行为
T-beam bridge
high radiation area
solar radiation intensity
temperature gradient
mechanical behavior
