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由混凝土桥面板与钢梁组成的结合梁的温度应力与静载或动载应力相比是值得注意的。AASHT0规范没有明确提出结合截面的垂直温度分布情况。安大略公路桥梁设计规程虽然提出了设计者必须考虑温差影响的要求,但仍存在很多不足之处。在综合实桥的理论和试验研究的基础上,本文提出了一个简单而实用的截面垂直温度分布图,同时给出了与现场观测一致的最大和最小温差值。所推荐的温度分布情况是,沿板截面为线性分布,沿梁截面为均匀分布。该分布为计算简支和连续结合梁桥的温度应力提供了简单的计算方法。
The temperature stress of the composite beam composed of concrete bridge deck and steel beam is worth noting compared with the static load or dynamic load. AASHT0 specification does not explicitly put forward the cross-section of the vertical temperature distribution. Ontario Highway Bridge Design Code Although the designer must consider the impact of temperature requirements, but there are still many shortcomings. Based on the theoretical and experimental study of the actual bridge, a simple and practical cross-sectional vertical temperature profile is proposed, and the maximum and minimum temperature differences consistent with the field observations are given. The recommended temperature profile is that the cross-section along the plate is linear and the cross-section along the beam is uniform. This distribution provides a simple calculation method for calculating the temperature stress of simply supported and continuously bonded beam bridges.