以单箱单室混凝土箱梁桥为例,考虑温度场随竖向和横向位置的变化,重点分析温度平面分布及其所产生的二次应力。采用ANSYS有限元软件建立空间有限元模型进行计算,与现场实测数据对比表明温度梯度将引起横向竖向极大的二次应力。因此,在实际计算和施工中,温度分布及相应产生的温度应力需要引起高度的重视。 Taking single box single chamber concrete box girder bridge as an example, the change of temperature field with vertical and horizontal positions is taken into account. The temperature distribution and the secondary stress generated are mainly analyzed. ANSYS finite element software was used to establish the space finite element model to calculate. Compared with the field measured data, it shows that the temperature gradient will cause great vertical and horizontal secondary stress. Therefore, in the actual calculation and construction, the temperature distribution and the corresponding temperature stress needs to be given high priority.