The Detection And Assessment Of Bearing Capacity Of Existing Concrete Bridges

With the rapid development of China transportation,the traffic volume increase quickly,and the grade of the road also got improves.In the operation of the bridge,many external factors make bridge structure appear damage disease.If these damages or diseases can’t be found and repaired in time,with the passage of time,most of these bridge’s bearing capacity will be reduced,and then it is difficult to meet the traffic demand.Therefore,it is necessary to determine whether the structure have enough capacity to meet the needs of traffic load,and get the correct structure treatment method to repair the damages.In view of the above situation,this paper combined with the detection and evaluation of Qingyijiang Bridge carried out the following work.(1)Introduced the domestic and abroad situation of Highway Bridge,Combined with both domestic and abroad research status of the bridge detection and assessment,points out the significance of Detection Assessment.(2)Analysis of common diseases and mechanism and characteristics of bridge.The different disease detection methods are introduced.The principles of the load test are introduced.(3)Assessment of the theoretical system of existing bridges are analyzed.Through the analysis of the bridge structure,and inspects whether it meet the load-carrying capacity and the use of performance requirements.(4)By taking Qingyijiang Bridge as an example,after load testing,this bridge has carried on the comprehensive detection and analyses its disease.The bridge condition rating is given based on the inspection.Then,the repairs of suggestions were put forward,which can be taken as valuable information for operation and reference by the same type bridge.