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钢-混凝土组合结构桥面系近几年开始在拱桥结构中使用,拱桥中组合桥面系受力复杂,其力学性能受钢与混凝土是否连接、是否张拉系杆以及混凝土的浇注顺序等影响。该文采用空间有限元模型,开展了钢主梁拱桥组合桥面系的力学性能研究。研究表明:在钢主梁拱桥结构中混凝土桥面板与钢主梁是否结合对桥面系的整体受力影响甚微,只对桥面系局部位置的混凝土桥面板应力分布有所影响;拱桥中是否安装系杆对桥面系的受力影响较大,而且桥面系的受力与系杆张拉力有密切关系;对于组合桥面系的拱桥采用一次浇筑混凝土桥面板施工方法的桥面系受力要明显优于采用分段浇筑混凝土桥面板的方法。
The steel-concrete composite bridge deck system has been used in arch bridge structures in recent years. The combined bridge deck system in the arch bridge is subject to complicated forces. Its mechanical properties are influenced by whether the steel is connected with the concrete, whether the tensioning tie rods and the pouring sequence of the concrete are involved . In this paper, the finite element model of the space is used to study the mechanical properties of the composite deck system of steel main beam arch bridge. The research shows that whether the combination of the concrete bridge deck and the steel girder has little effect on the overall stress of the bridge deck in the structure of steel main beam arch bridge and only affects the stress distribution of the concrete bridge deck in the bridge deck; Whether to install the tie rod has a great influence on the force of the deck system, and the force of the deck system is closely related to the tension of the tie rod; for the arch bridge of the combined deck system, the deck system of one concrete pouring construction method is adopted Force is significantly better than the method of using segmented concrete bridge deck.