日照引起的钢筋混凝土箱梁中温度分布试验研究

The Research for Temperature Field of the Reinforced Concrete Box Girder Bridge Caused by the Solar Radiation

日照温差荷载引起的桥梁结构的温差应力是造成桥梁结构损坏的重要原因之一,本文在实桥日照温度场实测资料基础上,研究了日照引起的钢筋混凝土箱梁内温度分布及其变化情况,分析了其规律性,得到了沿箱梁高度方向的温差梯度模式。

Numerous domestic and international research indicates that the temperature differential stress caused by solar radiation is a main reason to the bridge damage.Based on the observation data about the temperature field of the reinforced concrete box girder bridge,the temperature distribution form caused by the solar radiation is studied and the formula of temperature differential form along the vertical direction of the box section is obtained.