Wholly lifting construction method for asymmetric structure of huge overhang steel of high-rise building

Abstract

The invention discloses a wholly lifting construction method for an asymmetric structure of a huge overhang steel of a high-rise building. The method is characterized by comprising the following steps: firstly, splicing connecting corridor overhang steel structures into a cubic integrated structure on the ground; reserving a certain splicing area without splicing on the other two non-stress sides corresponding to adjacent lifting sides of the integrated structure; respectively arranging lifting hanging points on roof layers or middle layers of two building main towers and totally arranging more than three sets of hanging points; arranging one set or more sets of hydraulic lifters for each set of the hanging points and respectively arranging on a corresponding basic axis of a lifting unit of the connecting corridor; lifting, after in place, folding, fastening and welding with a corresponding part of an original building main body, and then mounting the reserved splicing area; gradually unloading by the lifter part; and lastly, finishing the construction steps. According to the method provided by the invention, the construction efficiency is obviously increased while the construction safety is ensured, the workload for lifting is greatly reduced, the unnecessary construction period is shortened and the other professional construction is not influenced during lifting.

Description

technical field [0001] The invention relates to a construction method for overall lifting of a huge cantilevered steel asymmetric structure of a high-rise building. Background technique [0002] In the construction of construction projects, it is often encountered that the overall lifting of giant steel structures is generally over 1,000 tons in weight. If you want to lift such a heavy steel structure for a certain distance, and then integrate The main body of the building is closed and then connected to certain requirements. The construction is difficult, and the lifting and installation requirements are high, especially when the roof or the middle layer of the giant cantilevered rigid asymmetric structure is lifted between the two adjacent building bodies. This kind of lifting process is that a cubic steel corridor structure has force-lifting lifting points on the adjacent two sides of the horizontal plane, while the other two adjacent sides are completely suspended withou...

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Problems solved by technology

[0002]In the construction of construction projects, it is often encountered that the overall lifting of the giant steel structure is generally over 1,000 tons in weight. Such a heavy steel structure is lifted for a certain distance, and then it is closed with the existing main body of the building and then connected with certain requirements. The construction is difficult and the requirements for lifting and installation are high, especially between two adjacent building main bodies. Carry out the overall lifting of the giant cantilevered rigid asymmetric structure of the roof or the middle layer. This lifting process is that a cubic steel corridor structure has force-lifting lifting points on the adjacent two sides of the horizontal plane, while the other adjacent two sides are completely suspended without force. Lifting the lifting point, in this case, the steel corridor structure is required to be lifted and installed with the corresponding parts of the main roof or middle layer of different buildings after the adjacent two sides are stressed and the other adjacent two sides are not stressed. After fastening, it forms a large-span permanent cantilevered steel structure between different building main roofs or intermediate floors. The construction is very difficult, and the requirements for lifting and installation are very high. At present, the overall lifting of the giant asymmetric steel structure known in the market Generally, tower cranes are used to hoist the parts and then assemble them after they are in place. The disadvantages are that the construction efficiency is low, the construction quality is difficult to guarantee, the workload of hoisting is large, the construction period is unnecessarily increased, and in the process of hoisting, it will inevitably affect to other professional construction, such as the construction of building curtain walls, which will affect the progress of the total construction period

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