Analysis on the Cause and Prevention Measure of Crack in the Main Girder of Large-span PC Variable Cross-section Continuous Box Girder Bridge
Large-span Prestressed Concrete(PC)variable cross-section continuous box girder bridge is a common bridge on the main highway.During its service period,the main diseases of continuous box girder are longitudinal cracks in the top and bottom plates,followed by oblique cracks in the web plate,horizontal cracks in the web plate,cracks in the intermediate diaphragm and cracks in the anchorage zone of the truss plate.This paper analyzes the causes of various cracks in box girder,and further puts forward effective crack prevention measures for reference.
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