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建立了桥梁三维瞬态温度场及整体辐射通量计算模型 ,较全面地考虑了太阳、大气、河流、车辆等因素对桥梁温度分布的影响 ,并以当前广泛采用的混凝土箱型梁桥为例 ,用有限差分的方法对桥梁进行了红外热像数值模拟。
The calculation model of three-dimensional transient temperature field and total radiative flux of bridges is established. The influences of the sun, atmosphere, river and vehicle on the bridge temperature distribution are comprehensively considered. Taking the widely used concrete box girder bridge as an example The finite difference method is used to simulate the infrared image of the bridge.