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Question:

Why steel structure is adopted in super high-rise buildings?

Why steel structure is adopted in super high-rise buildings?

Answer:

High strength, light weight and rigidity; homogeneous and isotropic material, an ideal elastic body, the most consistent with the basic assumption of the general engineering mechanics; material has good plasticity and toughness, and can have large deformation, can well withstand dynamic loads; short construction period; the high degree of industrialization, can professional production of high mechanization degree;
Sep 14, 2017
The toughness of steel structure is better than that of concrete structure, and its seismic performance is good, which is incomparable to concrete structure. GB50011-2010 "building seismic design code" provides the maximum applicable height, to fortify the 6 degree area, for example, concrete structure 80M, and steel structure is 300M high;
Sep 14, 2017
Steel structures have much lighter weight than concrete structures. The weight of concrete high-rise structure is about 1200kg / square meters of building area, and steel weight about 500kg / square meters building area. So the same foundation, the steel structure may be built higher;
Sep 14, 2017
The steel strength (tensile and compressive) than concrete, steel (standard) 345Mpa (pull) above, 200Mpa (pressure), and concrete (standard) 10Mpa (pull), 100Mpa (pressure), so don't need stupid thick section.
Sep 14, 2017

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