Research On The Strengthening Technology Of Truss Combination Arch Bridges

As truss arch bridges compared to other type bridges with the same span has many advantages, such as light weight of structure, low cost of project, strong the ability of across, simple equipment of construction and convenient construction, so this type bridges since them birth has been vigorously promoting in the past 20 years,Nationwide, particularly in the Guizhou Province this type bridges has developed rapidly. but after 20 years of development and used many problems about this kind of bridges have arisen in recent years. Truss arch bridge block in severe disease has seriously affected the normal use of these bridges , therefore an urgent need to reinforce this type of bridge.First,According to disease causes, The author raised four methods of reinforce,which are increasing Cross-section method,Release energy method,Prestressed method and Pasted method . Second, Separate expounded the theories of the four reinforce methods. Finally, take Fade bridge reinforcing project as an example, To prove such composite reinforcement method is effective and reasonable.This article describes methods and the ideas of the reinforcement method of Truss Arch Bridge that have a certain reference value to Truss arch bridge and other types of reinforcement.