Method for dismounting single-layer dome netty structure of large gas storage cabinet top system

Abstract

The invention relates to a method for dismounting a single-layer dome netty structure of a large gas storage cabinet top system. A support-free annular dismounting method is adopted. The method comprises the concrete steps as follows: (1) dismounting an accessory structure of the cabinet top system; (2) arranging a flexible stay cable for enhancing the stability of a cabinet top main structure among a cabinet top plate, a cabinet top beam and an upright post; (3) dividing the cabinet top plate and the cabinet top beam into a plurality of annuluses by taking the center of a cabinet top as the center of a circle, then, dividing the annuluses into a plurality of cell blocks, and dismounting all the cell blocks from the center of the cabinet top to an outer ring direction; (4) enabling the flexible stay cable to gradually move from a fixed point of the cabinet top system to a part of an outer ring, which is not dismounted, in the process of dismounting the cell blocks of the cabinet top plate and the cabinet top beam; and finally, dismounting a leveling support and a cabinet top outer ring beam. By using the method, a large-span single-layer dome netty structure can be dismounted without using large hoisting equipment and a large number of measure supports; and the method is simple, effective, economic and safe and can be widely applied to the dismounting of structures similar to the single-layer dome netty structure.

Description

Technical field [0001] The invention relates to a method for removing a single-layer dome net-like structure, in particular to a method for removing a rubber membrane sealed gas storage cabinet and a wet gas storage cabinet roof system. Background technique [0002] Rubber membrane sealed gas storage tanks and wet gas storage tanks have more than 20 years of development history in urban gas, metallurgy, chemical, coal mine and other industries, and they have played an important role. Some of the gas storage tanks have reached their service life and need to be dismantled and reconstructed. The top system of this type of gas storage cabinet is a single-layer dome network structure, which has the characteristics of large weight, large span, and large construction height, which brings greater difficulties to the removal. [0003] At present, the main methods of removing the top of the rubber membrane sealed and wet gas storage cabinet are: [0004] 1) Demolition by erecting red scaffold...

AI Technical Summary

Problems solved by technology

[0006] Longitudinal slitting method refers to setting up measures in the cabinet to support the center of the cabinet roof, and then using large lifting equipment to remove the cabinet roof system in symmetrical longitudinal strips. This method is more common, but the cost is high. When pushing up structural parts, it is easy to lose stability and pose a great safety hazard

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