Crack Control of Cast-in-place Box Girder With Super Wide Fish Belly
In recent years,the domestic station city complex TOD has developed into a new construction mode,and the cross-synchronous construction of multiple large building forms such as subway,municipal road and commercial complex has become a problem in engineering practice.Combined with the Chengdu Expo City comprehensive transportation hub project,this paper analyzes the fish-bellies multi-panel four-box closed ultra-wide box girder of Fuzhou Road and Bridge,and adopts five measures such as optimizing concrete mix ratio,U-shaped cooling pipe layout,after-pouring belt layout,support settlement control and box girder pouring sequence to solve the problem of cracking prevention of large-volume C60 beam body concrete,and has achieved obvious practical results.He won the National Quality Engineering Award and the Zhan Tianyou Award for Civil Engineering.
fish-belly cast-in-place box girdermass concretecrack control
万方数据
维普
