广交会大厦核心筒分片式爬模施工技术

Construction Technology of Climbing Formwork by Pieces for Core-tube of CIEF Building

广交会大厦为钢框架-混凝土核心筒结构体系。工程创新采用分片式液压爬模和爬模初始安装技术,即结合核心筒混凝土浇筑和上层钢筋绑扎情况,分片爬升内外模板,解决了外伸牛腿对整体爬升的不利影响;施工中预留安装孔洞,利用爬模的大钢模板完成首层施工后安装爬模架体和模板,改进了先用普通模板施工两层墙体作承载体的方法,令整个爬模系统灵活、适用性强、提高工效。

CIEF building is designed as steel frame and concrete core-tube structure.Multi-pieces hydraulic climbing formwork and initial installation technology is innovatively used in the project.Combining with concrete pouring and upper layer steel bars construction,internal and external formworks are lifted by pieces,and the extended bracket influence to integral lifting is avoided.Through presetting installation holes,the first floor can be constructed using large steel formwork of the climbing formwork,and then climbing formwork system can be installed,therefore traditional method of constructing two storey structure as bearing body with common formwork are improved.So the system is more flexible,suitable,and effective.