Cause Analysis of Transverse Cracks and Reinforcement Mea sures for Midspan of Assembled Box Girder Bridge

4th International Conference on Energy Equipment Science and Engineering

Xiaohong, Sun^1

Research Institute of Highway Ministry of Transport, Beijing

100088, China^1

关键词: Box girder;    Bridge structures;    Paper analysis;    Pre-stressed;    Prestressed concrete box girder;    Research object;    Strengthening effect;    Transverse crack;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/242/6/062059/pdf
DOI  :  10.1088/1755-1315/242/6/062059

来源: IOP

【 摘 要 】

Taking a prestressed concrete box girder bridge as the research object, this paper analysis the causes of transverse cracks in the middle span of small box girder and adopts external prestressed bars for reinforcement. Two years of monitoring data showed that the strengthening effect was good, which accumulated experience for the treatment of similar bridge structures.