以预应力混凝土连续箱梁桥为例,利用MidastCivil,采用梁格法建立空间有限元模型,分析了在加载不同的温度荷载工况时,桥梁的温度应力及挠度。在计算不同地区的桥梁温度应力时,应根据桥梁所处的气候环境条件,建立适合不同地区的温度梯度模式。 Taking the prestressed concrete continuous box girder bridge as an example, a spatial finite element model was established by using the method of Midas tCivil using the beam grid method. The temperature stress and deflection of the bridge under different temperature loading conditions were analyzed. In calculating the temperature stress in different regions of the bridge, the temperature gradient mode suitable for different regions should be established according to the climatic and environmental conditions of the bridge.