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论文类型：期刊论文

发表时间：2018-12-01

发表刊物：ENGINEERING FAILURE ANALYSIS

收录刊物：SCIE

卷号：94

页面范围：447-457

ISSN号：1350-6307

关键字：Slanting-cross; Arch bridge; Crack; Fatigue; Reinforcement

摘要：The disease and reinforcement of a slanting cross-shaped arch bridge are addressed. Tongtai Bridge is a slanting cross-shaped arch bridge. After 9 years of opening to traffic, cracks are found on top of the west capping beam and the east deck migrates towards the north about 200 mm. A space finite element model is established with RM Bridge and the results of limit pins are investigated. The main cause of the bridge damage is incompetence of resisting horizontal forces. According to the cause, some reinforcement measures are adopted, which include welding new bottom plate, wrapping capping beam with steel plate, recovering the girder by tensioning and welding new limit pins under the strengthened girder bottom. After changing constraint, the bridge is safe due to horizontal forces decrease. This provides a reference for similar bridge design.