Design of Maintenance and Reinforcement of a Cross-Youdun Gang Bridge
Cross-Youdun Gang bridge is a five-span cantilever beam and T-beam combination bridge with suspended beams.Due to the fact that the clearance under the bridge does not meet the requirements for navigation and the bridge has been in disrepair for a long time,resulting in severe local damage.It is assessed to be Category-4 and urgently needs maintenance and reinforcement.The paper analyzes the causes of the main bridge diseases and gives a maintenance and reinforcement plan.On this basis,the paper describes the specific reinforcement technical measures,including crack sealing treatment,T-beams and box girder webs bonded steel plate;outer-packed concrete section enlarging method;T-beam partition bonded steel plate,re-paving of bridge surface with planting bar and adding EP-100 expansion joints.The research results indicate that these reinforcement measures effectively improve the durability and bearing capacity of the bridge.According to the evaluation results of the subsequent load test,the bridge has been well maintained and reinforced,and it has been in normal operation for more than 3 years.After continuous monitoring and observation,it can be found that the stiffness and stress of the bridge have been greatly improved.
bridge maintenance and reinforcementcrack sealingbonded steel platesection enlarging methodplanting bar
万方数据
维普
