The Highway Bridge Maintenance And Reinforcement Strategy And Economical Evaluation Of Technology

With the rapid development of China’s traffic cause, the highway traffic flowincreased sharply, heavy loaded vehicles also increased. Meanwhile, the originallylow construction standard, poor construction quality and lack of effectivemaintenance resulted in plenty of dangerous and aging bridges. To ensure the normaloperation of the traffic, these bridges need to be handled. Because of limited funds, itis unrealistic and uneconomical to demolish and rebuilt these bridges. Therefore, ithas the important significance to propose effective method to handle dilapidatedbridges, meeting the current operation demand as well as achieving economicrationality.On the basis of integrating bridge maintenance and reinforcement methods andevaluating economically research status at home and abroad, the contents of thispaper are mainly as follows:1.It summarizes current common ways and respective application of bridgeinspection, maintenance and reinforcement.2.On the basis of the theory of economics and the premise of life cycle cost, thispaper use annual cost method to set the economic analysis model of bridgereinforcement and rebuilt plan. This paper, taking reinforced concrete truss bridge asengineering example, carry out on-site inspection and loading test. It sets upthree-dimensional model with Midas-Civil to carry out theoretic analysis, andintegrates the experimental and theoretic data of the bridge to choose an alternativereinforcement plan of the bridge.3.The mentioned reinforcement method will be optimized on the basis ofconsidering meeting the demand of carrying capacity and economic rationality. Itcalculates with economic analysis model, comparing the economical efficiency ofalternative reinforcement plan with rebuilt plan.