Cause Analysis and Treatment of Cracking of RC Beams in a Super-tall Building
Cast-in-situ concrete structures are widely used in super-tall buildings in China.Concrete cracking is the most common quality problem in this kind of structures.Concrete cracks not only affect the appearance of the building,but also easily cause the corrosion of internal steel bars,reduce the durability of the structure,and even threaten the structural safety.Based on an example of a newly-built super-tall building where concrete beams are commonly cracked,the paper investigates the causes of concrete cracking through on-site inspection,testing,and analysis of design and construction data,and the corresponding treatment suggestions are also proposed based on the actual situation on the spot,aiming to provide reference for the inspection,identification and treatment of similar engineering problems.