阿联酋Al Hikma超高层建筑高强混凝土裂缝产生原因及鉴定

Reason Analysis and Appraisal for the High-strength Concrete Cracking of the Al Hikma Project in UAE

Al Hikma项目地处气候燥热的阿联酋迪拜,地上62层,总建筑高度284.88m,属于超高层项目,主体结构的梁、柱和核心筒大量使用了C70,C80高强混凝土。根据现场高强混凝土的施工及裂缝的出现,阐述了高强混凝土裂缝产生的原因,并根据美国规范重点论述了3种鉴定裂缝是否为结构裂缝的方案。

The Al Hikma project is located in the hot and dry area of Dubai,UAE.It has 62 levels aboveground with a total height of 284.88m,which belongs to super high-rise building.High-strength concrete of C70 and C80 are extensively used in beams,columns and core-walls.Based on high-strength concrete construction and occurrence of concrete cracks on site,this paper explains the reason for the occurrence of cracks in high-strength concrete,and discusses three kind of appraisal schemes to check if the cracks are structural cracks according to the American standards.