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对于多跨超静定桥梁结构来说,温度荷载的变化也是引起其内力变化的重要因素。通过建立不同坐标系下的导热微分方程,分析不同温度对混凝土水化热的影响。结合具体工程实践对桥梁薄壁桥墩的分析,通过建立有限元模型对比环境温度分别在30℃和10℃下的水化热温差,计算出其最高可达11.470℃,以此为基础探讨其在不同环境温度下的影响。
For multi-span statically indeterminate bridge structure, the change of temperature load is also an important factor that causes the change of its internal force. By establishing differential equations of thermal conductivity in different coordinate systems, the influence of different temperature on hydration heat of concrete is analyzed. Based on the analysis of concrete bridge piers, the finite element model was used to compare the temperature difference of hydration heat at 30 ℃ and 10 ℃ respectively, and the maximum temperature was 11.470 ℃. Based on this, Effects at different ambient temperatures.