组合梁混凝土桥面板维修更换影响及预案研究

从桥梁全寿命经济性设计观点出发,提出组合梁混凝土桥面板可更换方案,基于该方案,对桥面板更换过程中桥梁结构的受力以及不同的更换顺序对钢结构的影响进行了研究,从施工操作简单、结构安全性能佳的角度提出了桥面板更换的最优策略,确保大桥在维护特别是桥面板更换时的结构安全,同时保证大桥的百年寿命要求。

Study on Influence and Plan of Maintenance and Replacement of Composite Beam Concrete Bridge Deck

From the full-life economic design viewpoint of bridge,the replaceable scheme of composite beam concrete deck is proposed.Based on this scheme,the stress of bridge structure during the replacement process of deck and the influence of the different replacement sequences on the steel structure are studied.The optimal strategy of deck replacement is proposed from the viewpoints of simple construction operation and good structural safety so as to ensure the structural safety of bridge during the maintenance,especially the replacement of deck,and also guarantee the centenary service life requirement of the bridge.