Hoisting construction method of curved truss

Abstract

The invention discloses a hoisting construction method of a curved truss. The method comprises following steps: step 1, installing temporary support columns; step 2, installing spare hoisters and temporary hoisting balls; step 3, performing first hoisting operation; utilizing the temporary support columns, the spare hoisters and the temporary hoisting balls to firstly hoist a truss in the outer periphery to the hoisting height which is the height for changing, hoisting and splicing; step 4, aligning and splicing trusses in order to form an overall hoisting truss; step 5, installing formal hoisters and changing and hoisting balls; step 6, utilizing the formal hoisters and the changing and hoisting balls to secondarily hoist the truss; step 7, dismantling the temporary support columns, the temporary hoisters and the temporary hoisting balls; step 8, performing third hoisting operation and the hoisting the overall hoisting truss to the elevation level. The hoisting construction method of the curved truss is utilized to hoist the truss to the overall splicing height and does not need to set up a splicing platform of a support system for the overall hoisting truss so that constriction efficiency is improved and the working period of site constriction of a steel structure is effectively shortened.

Description

technical field [0001] The invention belongs to the technical field of large-span network frame construction, and in particular relates to a construction method for lifting a curved surface network frame. Background technique [0002] Steel structure engineering is a structure mainly made of steel. It is mainly composed of steel beams, steel columns, steel trusses and other components made of steel and steel plates. The components or parts are usually connected by welds, bolts or rivets. One of the main types of building structures. Because of its light weight and easy construction, it is widely used in large factories, stadiums, super high-rises and other fields. Large-span grids are commonly found in steel structure engineering. At present, most of the lifting of large-span grids is the synchronous lifting method using lifters. [0003] This construction method is to set up the lifter on the steel column first, and then set the lifting ball on the assembled grid frame fo...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a construction method for lifting a curved grid to solve the problem that the existing technology cannot meet the lifting requirements when the distance between the projection point of the lifter installed on the steel column and the projection point of the hanging point on the grid area is large , the technical problem that the existing lifting system cannot lift the grid

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