Comprehensive Measures Of Improving Double-curvature Arch Bridge Bearing Capacity

Double-curvature arch bridge is one of the characteristics bridge In our country,with the advantages,such as novel structure, lighter and province makings, facilitating construction, etc,once widely used nationwide in the 20th century in 1960s, for China to the development of the cause of the highway bridge made significant contributions. Because the remote, plus loads built low grade and steel consumption, mostly in congenital deficiency of civilian double-curvature arch bridge has appeared different degrees of diseases, cannot satisfy the heavy load, large volume of traffic of the modern traffic operation status. How to game double-curvature arch bridge in repair reinforcement, become many Bridges workers point of research.This paper summarizes various diseases of double-curvature arch bridge, and analyzes on the form of the comprehensive diseases occurring in summarizes common reasons,in the basis of advantages and disadvantages of strengthening methods to double-curvature arch bridge, combining with the Luobu old bridge reinforcing examples, from the change of the arch ring section form, and proposed a novel Angle of the reinforcement method. By using finite element software Madas/civil to calculation, the structure of reinforcement stress condition and analyzed, the results show that this method, although make structure internal gravity increased, can effectively enhance the hyperbolic arch bridge the bearing capacity.new technology, new method of exploration which provides a certain reference value...