Extraneous Prestress Technology In Continuous Rigid-frame Bridge Reinforcement Optimal Design And Its Construction Mornitoring Technology

Bridge in service in recent years appear to face a variety of diseases in, find effective ways to improve the bridge reinforcement defects, raise the bearing capacity of the bridge is particularly important. Continuous rigid-frame bridge beams and T-continuous rigid frame bridge the mechanical characteristics of the main beam and the thin continuous beam bridge pier consolidation made, reasonable force, was widely used. But also inevitably resulted in lower cross-beam deflection and cracks and other defects seriously affect the operation of the bridge.Prestressing reinforcement technology as an effective means to greatly improve and adjust the original structure of the force, the strength and commitment to improve crack resistance. In the Old Bridge Strengthening the older more attention. Especially in the continuous rigid frame bridge reinforcement, the results are obvious.In this paper, the theory of prestressing reinforcement and construction of a knowledge-based, through practical projects - La Mountain River Bridge Reinforcement is based on strengthening external beam technology research, mainly on the reinforcement of the structure was optimized through the construction monitoring, evaluation of the reinforcement effect.