Guangzhou Pearl River Metro East Tower wildly beating gongs and drums in the construction, is expected in February will exceed the height tower to be the tallest building in Guangzhou. Twenty years ago, Guangzhou first proposed the design of the Pearl River Metro Petronas Twin Towers, until the 2010 Asian Games, only the West Tower built Petronas Twin Towers independent Pearl River edge, and now with the construction progress of the speed, east tower body has become more tall and straight, has grown and theta almost as high as the. This to the originally planned "twin" brother, due to different developers, the final appearance be quite different -- theta mellow and soft, East Tower founder rigid.
West Tower has stand gracefully erect for three years, the story has been the media and the public are familiar with, but still quietly "growth" East Tower is very low -- in addition to the appearance of the effect of the earlier published architectural drawing, outline design concept, internal skeleton structure, construction story has been covered with surface yarn. While the East Tower building height nearly 400 meters (the actual tower plus construction ceiling height has more than 400 metres), have been close to and beyond the West Tower in the near future opportunity, Nandu reporter interviewed the East Tower architectural design unit American KPF architects, structural design organization Arup construction unit engineering consulting company, construction steel structure structure of the company, use Paodingjieniu technique first on the East Tower to do a full decryption.
Structure
8 500 meters tall steel column hold up the tower and double steel wall thickness of 1.5 meters
As for high-rise buildings, architects can set aside the engineering mechanical constraints, a powerful and unconstrained style to make various changes shape, but the structure of the division must return to reality, the construction of the complex from the drawings into reality by means of modern engineering technology, make it strong to resist the ultra strong typhoon, strong earthquake, fire, bomb attack damage. The world famous Arup engineering consulting company who helped design the main structure of the Canton Tower, it was the owners hired as the structure of the division of the East tower.
"Let the East Tower standing up is not difficult, difficult is in a standing but also consider the landscape space and cost." East Tower Structure consultants Arup engineers Zhao Hong told reporters in Nandu. In theory, as long as the East Tower in densely packed with all kinds of reinforced concrete beam column structure, nature is strong enough, but doing so tower will be occupied space beam column, really can be used for office building area will be less, more important is, work inside a living person will be completely wrapped in concrete, not only the sun to irradiation in, from the tower looked sight is beam column, which is tantamount to disaster; and if the reinforced concrete Liang Zhutai, will tower too fragile a typhoon, earthquake easy deformation or collapse.
Arup was originally drafted 4 sets of structural scheme, respectively is the "tube in tube" scheme, "mega truss with core tube" scheme, "arm of mega frame and core tube method, cantilever tube in tube scheme. The biggest difference between the four is the thickness and quantity of steel, and the layout is placed vertically, horizontally, oblique or irregular. "Imagine, when you are in the East Tower office from a huge window overlooking the Pearl River, you obviously want the window area the bigger the better, but the window is best not to be too much of a horizontal frame segmentation, it is this principle became us 4 sets the first selection standard scheme." Zhao Hong said.
According to this principle, because the space angle cut too broken, the large number of steel "tube" and "boom tube in tube" was rejected, but the "mega truss and beam core tube" although less, but the need for oblique arrangement, equivalent to add a diagonal in a mirror also, this will affect the final effect of space landscape perspective, at least the "mega frame and outrigger core tube" scheme to win, the price is 1.17 times of high cost -- of this structure is a common structure cost.
Through a complex computer simulation, "mega frame and outrigger core tube" final scheme are further refined into two parts, two sets of skeleton in the East Tower of considerable: 8 giant steel columns with 6 giant ring steel truss is the main frame, is the main force system of the East Tower; double steel plate shear wall is a skeleton the main framework, help share stress.
