Hoisting method for connective corridor large-span steel girders

Abstract

The invention discloses a hoisting method for connective corridor large-span steel girders. The hoisting method for the connective corridor large-span steel girders comprises the following steps: S1,providing a pair of high-altitude diagonal bracing type mast hoisting system, wherein the system comprises a main mast, secondary masts, a hoisting pulley block and a winch, and the main mast and thesecondary masts are arranged in a triangular manner; fixedly mounting the hoisting pulley block on a mounting plate of the main mast, and arranging a hook on the bottom of the mounting plate; and connecting the winch with an end of a steel wire rope of the hoisting pulley block; S2, symmetrically mounting the pair of systems on roof layer structural plates of two adjacent buildings which require to be connected through a connective corridor, mounting a main anchor plate at a position which is distant from a side beam by a certain distance, and mounting a secondary anchor plate at the positionof the side beam; and S3, operating the winch to enable the hook to lift so as to finish hoisting of the steel girder. Connective corridor main steel girders of different layers can be hoisted to reserved steel girder connecting portions of the different layers and then are mounted, the construction progress is accelerated, and the hoisting cost is reduced.

Description

technical field [0001] The invention specifically relates to a method for hoisting large-span steel beams in a corridor. Background technique [0002] With the rapid development of China's economy and technology, in difficult and large-scale construction, modern large-scale hoisting machinery has become the first choice for the hoisting industry due to its advantages of high hoisting efficiency, safety and reliability. However, in some specific construction occasions, due to the narrow construction site, small hoisting machinery cannot enter the construction site for long-distance hoisting operations, while large hoisting machinery is abandoned due to its high cost. For example, in Tianjin Shenzhou Science and Technology Plaza Project, buildings 2 and 3 are connected by a steel corridor. The length of the steel corridor is 32m, and the longitudinal steel beam in the middle section is 30m long. The surrounding area of ​​the building is an underground garage, and large and sm...

AI Technical Summary

Problems solved by technology

However, in some specific construction occasions, due to the narrow construction site, small hoisting machinery cannot enter the construction site for long-distance hoisting operations, while large hoisting machinery is abandoned due to its high cost

For example, in Tianjin Shenzhou Science and Technology Plaza Project, buildings 2 and 3 are connected by a steel corridor. The length of the steel corridor is 32m, and the longitudinal steel beam in the middle section is 30m long. The surrounding area of ​​the building is an underground garage, and large and small cranes cannot enter the site for hoisting steel beams

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