合肥恒大中心C地块高强大体积混凝土施工技术

Construction Technology of High Mass Concrete in Block C of Hefei Hengda Center

针对超高层建筑基础底板施工可能遇到的问题,以合肥恒大中心C地块518m的超高层项目为例,详细介绍了坑中坑小孔径支护桩的设计及施工,针对坑中坑多工序交叉下的穿插施工难题,提供了已成功实施的思路和方法。针对超高层建筑施工中常见的超厚大体积混凝土裂缝、多层大直径钢筋支架等共性问题,针对性地介绍了在配合比设计、钢筋支架设计及混凝土浇筑等方面成功应用的经验。

This paper takes Hefei Hengda Center project for instance, aiming at the problems of foundation slab construction in super high-rise building, introduces in detail the excavation in foundation excavation support design and construction of small diameter pile, the excavation in foundation excavation process under the cross with construction problems, provided ideas and methods which have been successfully implemented. For the common super thick mass concrete crack in the construction of high- rise buildings, muhilayer large diameter RC supports and other common problems, successful application experience in the mix design, steel frame design and concrete pouring and other aspects are introduced.