【摘要】 通过试验与理论分析研究了日照下弧形底宽箱梁节段的温度梯度和温度位移。结果表明 ,当顶板顶与底板底的温差不大时 ,温差主要集中在距桥面 0 .5m范围内且呈线性分布 ;节段横桥向两端会发生下挠变形 ,日照强烈时下挠可达 2mm左右 ;提出的简化方法对于日照下节段的温度位移计算是可行的更多还原

【Abstract】 The tests and theoretic analysis on temperature gradient and temperature displacement due to sunshine on broad box girder sections with curved bottom show that when temperature difference between the top of top plate and the bottom of bottom plate is not so large, it would mainly concentrate in the 0.5m range from bridge deck distributing linearly. And both the transverse ends of the girder section will have downwards flexure even up to about 2mm in strong sunshine light. A simple calculation method for temperature displacement under the sunshine on girder section is proved to be feasible.更多还原