连续箱梁桥温度应力分析

The analysis of thermal stress on continuous box-girder bridge

以(40+55×6+40)m的等高多跨混凝土连续箱梁桥为例,采用大型有限元计算工具,分别考虑了JTG D60-2004中的温度梯度作用下和推荐的正温度梯度作用下的温度应力,对于详细分析桥梁内部的温度应力和设计施工有一定的指导意义。

Take （40 ＋ 55 × 6 ＋ 40）m equal-high multi-span continuous concrete box-girder bridge as an example, with the help of large-scale finite element analysis tools, the temperature gradient in the JTG D60-2004 and the recommended one were taken into account for the thermal stress, for a detailed analysis of the thermal stress within the bridge and structural design have a certain significance.