Research On Disease Causes And Maintenance Measures Of High Speed Bridges In Liaoning Province

With the rapid development of China’s economy,the improving of the comprehensive national strength,the car has walked into the homes of ordinary people,the construction of roads and bridges in the round the clock for a high grade highway mileage China is constantly refresh a new world record.As the number of vehicles continues to increase,the loads on roads and bridges are also increasing.As a key node of the bridge,its capacity and carrying capacity become more and more important.Under the long-term load and physical and chemical action,the disease caused by it becomes more and more common and serious.So how can the premise of optimal economic benefits,professionals can rapid detection,comprehensive assessment,focusing on measures to ensure the reliability and safety of the bridge life cycle,road maintenance personnel become the goal of continuous exploration.The future for early detection of bridge diseases,in order to make the bridge maintenance work more comprehensive,scientific and accurate,the highway bridge in Liaoning Province Based on the detection,mainly analyze and research from the following aspects:(1)In view of the highway bridge in Liaoning province detection and data collection,the upper beam and plate hinge joint mortar efflorescence seepage,seepage loss,is the main type of efflorescence of disease,there are still a small amount of concrete pier cap beam reinforcement spalling damage,disease,and analysis of the distribution of the upper beam and plate,hinge joints and bent beam diseases and the reason of the.(2)Summary of domestic bridge performance assessment method,and the various evaluation methods are introduced,provide theoretical basis for evaluation of the bridge detection,finally through a concrete engineering example,introduces the more commonly used methods of load test,you can reference for bridge maintenance workers.(3)combined with the concrete bridge maintenance project in liaoning province,on the basis of maintenance decision analysis method,the three kinds of curing scheme from aspects of the maintenance cost and maintenance effect carries on the analysis comparison,the final choice of the most valuable solutions for the final maintenance.