External tower crane alternate conversion attachment system and construction method

Abstract

The invention discloses an external tower crane alternate conversion attachment system and a construction method. A tower crane structure comprises a tower crane, a temporary attachment system and a formal attachment system; the temporary attachment system and the formal attachment system are both arranged on the tower crane; the formal attachment system is located below the temporary attachment system; the two ends of the temporary attachment system are connected to the tower crane and a core tube correspondingly; and the two ends of the formal attachment system are connected to the tower crane and an outer frame column correspondingly. For a super high-rise building constructed by adopting a core tube first-moving and outer frame following method, when the height difference between the working surfaces of the core tube and the outer frame is too large, a temporary attachment system is adopted firstly, so that the phenomenon that the tower crane cannot be effectively attached to cause idleness of the tower crane due to the too large height difference between the working surfaces; and when the outer frame column is constructed above the temporary attachment position, temporary attachment is converted into formal attachment, so that the influence of a tower crane attachment rod piece on subsequent decoration and curtain wall construction of a building is avoided, and the overall construction progress of a project is facilitated.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to an alternate conversion attachment system of an external tower crane and a construction method. Background technique [0002] Super high-rise building construction has a lot of intersections among different disciplines, material hoisting height is high, and vertical transportation and construction organization are difficult. In the super high-rise vertical transportation construction, the tower crane, as the main heavy component and material hoisting machine, its plane layout and quantity will play an important role in the smooth progress of the entire project construction. Externally attached tower cranes are widely used in the vertical transportation construction of super high-rise buildings because of their convenient installation and disassembly and their ability to cover a large area of ​​construction materials. [0003] The attached tower is set on the outsid...

AI Technical Summary

Problems solved by technology

Since the core tube structure is constructed first, there is a certain height difference between the core tube structure and the construction surface of the outer frame structure on the facade, and in actual construction, due to the large number of steel beams and steel columns in the outer frame structure, the construction speed is slower than that of the core tube structure. The slow construction speed of the tube structure will cause the height difference between the core tube and the outer frame structure working surface to gradually increase during the initial construction. When the height difference between the two working surfaces approaches or exceeds the maximum free end height of the external tower, only Relying on the tower crane attached to the outer frame will not be able to meet the construction requirements of the core tube, the tower crane will be affected, the efficiency will be seriously reduced, and the core tube structure will be affected by the outer frame structure and there will be problems such as waiting for construction. The general solution to the above problems is in Additional attachment points are added to the core wall, but the attachment points and attachment rods arranged on the core wall will affect the subsequent professional construction operations such as curtain walls and decoration, which is not conducive to the normal construction, seriously affecting the construction progress and improving construction difficulty

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