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随着我国桥梁设计施工技术的快速发展,国内已建成大量的钢结构曲线梁桥,但由于钢结构桥梁自重较轻,在自重和车辆等荷载的作用下,容易发生支座脱空现象,因此,有必要进行钢结构曲线桥梁的受力特性研究,以避免支座脱空等结构病害的发生,确保桥梁结构的安全。本文以某已建工程实例桥为背景,分析了该桥在其它控制因素不变的条件下,不同曲率半径对主梁应力及支反力等结构受力特性的影响,给出了该类桥梁在不同曲率半径条件下,主梁应力及支反力的变化情况,以供同类桥梁参考。
With the rapid development of bridge design and construction technology in our country, a large number of steel structure curved beam bridges have been built in our country. However, due to the light weight of steel bridge bridges, under the action of dead weight and vehicle loads, , It is necessary to study the stress characteristics of the bridge with steel structure curve in order to avoid the occurrence of structure diseases such as the bearing vacancy and ensure the safety of the bridge structure. Based on the bridge of an existing project, this paper analyzes the influence of different radii of curvature on the stress characteristics of the main girder such as the stress and the supporting force under the condition of other control factors being constant. Under different radius of curvature conditions, the main beam stress and the change of the reaction force, for similar bridge reference.