摘要
近年来,国内站城综合体TOD开发成为一种新型建筑模式,地铁、市政道路、商业综合体等多种大体量建筑形态交叉同步施工成为工程实践难题。基于此,结合已经实施的成都博览城综合交通枢纽工程,解析福州路桥鱼腹式多幅四箱室闭合型超宽箱梁,采取优化混凝土配合比、U形冷却管布置、后浇带布置、支架沉降控制、箱梁浇筑顺序等5种措施,解决大体积C60梁体混凝土防开裂难题,并取得明显实践成果,获得国家优质工程奖和土木工程詹天佑奖。
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.
作者
王志刚
WANG Zhigang(China Railway First Bureau Group Co.,Ltd.,Xi'an Shaanxi 710054)
出处
《中国科技纵横》
2024年第2期100-102,共3页
China Science & Technology Overview
基金
中国中铁股份有限公司2016年度科技开发计划(2016-引导-69),中铁一局集团有限公司2017年度技术研发项目(2017A-014)。
关键词
鱼腹式现浇箱梁
大体积混凝土
裂缝控制
fish-belly cast-in-place box girder
mass concrete
crack control
