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随着城市轨道交通的快速发展,混凝土U型以其结构美观、建筑高度低等因素而获得较大的应用空间。相比较传统的箱梁结构,桥梁规范中针对混凝土U型梁还没有相应的温度分布曲线可以用来指导工程设计。本文将采用有限元法模拟在太阳辐射作用下的混凝土U型梁的三维瞬态温度场分布,并着重分析在太阳辐射作用下U型梁跨中截面的温度场并对结构设计提出相应的建议。
With the rapid development of urban rail transit, concrete U-shaped structure has obtained a large application space due to its beautiful structure and low building height. Compared with the traditional box girder structure, there is no corresponding temperature distribution curve for the concrete U-beam in the bridge code to guide the engineering design. In this paper, the finite element method is used to simulate the three-dimensional transient temperature distribution of U-shaped beams under the action of solar radiation. The temperature field in the mid-section of the U-shaped beam under solar radiation is analyzed emphatically and the corresponding suggestions are put forward .