External Prestressing Bridge Reinforcement Technology Review
1 Key Laboratory for Old Bridge Detection and Reinforcement Technology of Ministry of Transportation, Chang’an University, Xi’an, Shaanxi, China
2 Chang’an University, Xi’an, Shaanxi, China
Externally prestressed bridge can not only limit and reduce the cracks and deformation of the structure, improve the rigidity and bearing capacity of structure, improve the stress state of structure, but also have less interference for bridge operation when it is operating and have the good economic efficiency. This paper introduces the advantages and disadvantages of external prestressed strengthening technique, its calculation theory and construction technology described in detail, and finally the paper discusses the deficiency of existing research.
Key words: Externally prestressed / Old bridge reinforcement / theory of computation / construction process
© Owned by the authors, published by EDP Sciences, 2015
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