Study On Strengthening Theory And Method Of Existing Reinforced Concrete Double Curved Arch Bridge

Double Curved Arch Bridge is built in Wuxi, Jiangsu Province, which is China's 20th century up to the 1960s and 1970s an arch type of construction, this type of bridge-type structure with a new, lightweight, material saving, ease of construction and other features. With the continuous development of China's national economy, the increasing traffic load and the load increases, both the hyperbolic arch overload is severe, combined with the original bridge design conditions so inadequate, many hyperbolic arch bridge in use for some time later, there were varying degrees of damage. Capacity required for the ability of the hyperbolic arch bridge assessment, does not meet the access requirements for the maintenance and reinforcement of structural transformation.This thesis focused on existing reinforced concrete curved arch bridge reinforcement theory and Reinforcement Study initiated. Firstly, according to the characteristics and structure of curved arch bridge reinforcement of existing theoretical methods, and the curved arch bridge arch axis of the design method of measurement used to establish the arch axis model, the finite element method calculation of its internal forces. Again, according to disease type and curved arch bridge reinforcement method to analyze the type of hyperbolic Arch Bridge, with practical examples, analysis of common diseases curved arch bridge design principles and the reinforcement. Finally, the background of a bridge in Liangshan Prefecture, in the access to large number of documents on the basis, according to engineering design using finite element method for example, on the force analysis of a hollow double curvature arch bridge to solve its internal forces, and the corresponding reinforcement program.This paper combines the finite element method and plane hyperbolic arch of the actual method of testing, hyperbolic Arch Bridge on the finite element model, and thus hyperbolic arch bridge structural analysis. This method of repair and reinforcement of curved arch bridge has a certain reference value.