Super high-rise buildings are mostly designed as frame core tube structures. According to different heights, there are mainly two types:
Type 1: The inner tube is a reinforced concrete core tube structure + an outer tube giant column, the giant column and the core tube are connected by steel beams, and the outer tube floor is in the form of a composite floor, such as: Guangzhou West Tower, Shanghai Universal, Shenzhen Kingkey 100 Building , Guangzhou East Tower, both of which are in this structural form, with a height of more than 400 meters.
Type 2: The inner tube is a reinforced concrete core tube + an outer tube giant column, the giant column and the core tube are connected by reinforced concrete beams, and the floor slab is an ordinary reinforced concrete floor slab, such as: Chongqing Universal, Guangzhou Gaode, currently bidding The east and west towers of China Resources Land Mixc City in Hefei. The building height is about 200 to 400 meters.
The construction of super high-rise buildings involves many construction technology topics in the field of construction, mainly in the following aspects:
☆ Select and determine the appropriate construction process and reasonably select the formwork and enclosure system.
☆ Construction quality control of high-strength, high-performance concrete, concrete filled steel tube, etc.
☆ Choice of vertical transport equipment.
☆ Reasonable insertion of construction time for each professional project.
☆ Management and coordination of multi-process and multi-work cross-operations involving the general contractor.
Second, the process sequence is determined
Type 1: The aforementioned type 1, the outer frame structure is the structural form of steel beams, which is suitable for the construction of the vertical structure of the core tube wall, the lag construction of horizontal structures such as floor slabs, and the construction of the outer frame steel structure and the beam plate lag behind the core tube structure for several floors. .
The connection between the steel beam and the core tube adopts the connection form of embedded welded lugs.
Sleeves should be reserved for the beam reinforcement in the core tube, the floor reinforcement can be in the form of reserved beard reinforcement, and the planting reinforcement can be used for local dislocation and leakage.
