Durability Analysis And Study Of Reinforced Concrete Bridge

Reinforced concrete bridge with its superior performance to become the world's most widely used form of a bridge structure. In the past few decades our country and the world has built countless reinforced concrete bridge . However, in the past, the design of reinforced concrete bridges, as one-sided pursuit of strength, thereby ignoring the durability of the bridge, resulting in many there has been the durability of concrete bridge built of local failure and aging. Engineering surveys in recent years is that, in service because of the durability of reinforced concrete bridge damage situation occurs more and more, which need to be addressed because of the bridge steel corrosion is universal, and the resulting negative impact and economic losses Is immeasurable, and thus the durability of reinforced concrete bridge is currently an important research topic.In this paper, based on the study at home and abroad, on the durability of reinforced concrete bridge structure was further in-depth, systematic study, including the following aspects:①.Based on the depth study of domestic and foreign literature, given the implications for the durability of a more comprehensive, more scientific explanation.②.Based on the catastrophic chain theory, in-depth analysis the various factors that's effect the durability of the reinforced concrete bridge and made a foundation for the effect which the durability damage to the resistance of a bridge.③.Combined with the characteristics of concrete bridge and based on the evolution theory of the bridge carrying capacity analysised the dominant factor of the durability damage and its effect on the resistance of a bridge.④.Based on research and analysis to various assessment methods for the durability of the existing bridge structure, built the evaluation system and mode for it. And based on the catastrophic chain theory , the durability assessment of existing concrete bridges is proposed.⑤.Based on the evolution theory of the bridge carrying capacity proposed related measures to improve the durability of reinforced concrete bridge, and provide a reference for the future construction of the reinforced concrete bridges.