Study On The Strengthening And Rebuilding Method Of The Upper Structure Of Arch Bridge

In this article, features of arch bridge, cause of arch bridge's diseases, and methods of strengthening and repairing are widely investigated and summarized. Based on the bridge of Jiuqu river, cause of the bridge's diseases, scheme of strengthening and rebuilding, method of calculating and the project of construction are put into study, Moreover, technique of reinforcing the bridge's pillar and bent cap are both deeply researched, which mainly contains as follows:â‘ Based on Jiuqu river bridge, an analysis of the diseases of concrete arch bridge whose spandrel structure has transverse bridge deck is made.â‘¡According to major diseases of Jiuqu river bridge, method that spandrel arches are removed span by span is offered. And, a comparative analysis between method mentioned above and method of removing all spandrel arches at time has been made. Finally, influence of those two strengthening methods to main arch has also been researched.â‘¢The technique that planting steel bars connect augmented section is brought forward. With an analysis of the model that was made in ABAQUS, as well as a comparative analysis between traditional technique and the new technique which is mentioned in point 3, rationality and effectiveness have both been demonstrated.â‘£Jointing measures between bent cap and pillar are discussed, method that angle steels are pre-buried in both bent cap and pillar is researched. At last features of force and transfer mechanism are researched in ABAQUS.