Rendering of Guangzhou East Tower

　　As the high-temperature work season ends, major construction sites in Guangzhou have entered their golden period. As of yesterday, the core tube of the main tower of Guangzhou's tallest building under construction has reached the 63rd floor, and the outer frame has reached the 61st floor. According to the project manager, the East Tower project is expected to complete the main structure topping-out before May next year.

　　"This 9-meter-high, 50-ton giant steel column will push us into the sprint phase of construction above 300 meters." At 4 p.m. yesterday, at the Guangzhou East Tower site, the world's largest tower crane (M1280D) with a capacity of 100 tons began lifting the giant structure with a circumference of over 13 meters off the ground at a speed of about half a meter per second. By evening, installation was completed, and all eight giant columns of the East Tower's outer tube structure stood at a height of 300 meters above ground. Southern Metropolis Daily reporters observed on site that, in addition to huge congratulatory slogans, the lifted giant columns were deliberately marked with the 300-meter elevation and a small coordinate system indicated by white dots on both sides. Through these "red dots," citizens can intuitively see their positioning in the Zhujiang New Town CBD. So far, only the West Tower and the Canton Tower across the river in Zhujiang New Town can reach or exceed this height.

　　It is worth noting that at the East Tower site above 300 meters, the final challenge will be encountered around the National Day holiday: the construction of the most complex truss layer structure on floors 67-68. According to the on-site manager of China Construction Steel Structure Corp., after the truss layer on floors 67-68 is completed, there will be no more difficult construction nodes until the tower top on the 112th floor.

　　Did You Know · Truss Layer:

　　The East Tower is Guangzhou's tallest building under construction, with a height of 530 meters, 5 underground floors, and 112 above-ground floors. Since construction began, it has achieved a construction speed of one floor every three days. After the "9·11" incident, many super high-rise buildings adopted a dual-tube structural design (inner and outer tubes) to prevent total collapse in the event of structural damage. The truss layer is the steel structure layer that connects the inner and outer tubes, appearing approximately every 20 floors. At the same time, the truss layer uses a large number of X-shaped steel frames to distribute forces and reduce the pressure of the super high-rise building on the foundation. Floors 40-41 and 67-68 of the East Tower feature the most complex structure with outrigger trusses and ring trusses. After the building is completed, the truss layers will be used for overhead spaces, refuge areas, and equipment placement, and will not be provided for residential or commercial use.