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A construction method for overall hoisting of large multi-angular cantilevered trusses

A technology of overall hoisting and construction methods, which is applied in the processing of building materials, buildings, roofs, etc. It can solve the problems of increasing the visual aesthetics of buildings, high safety risks in hoisting, and difficult construction, so as to achieve easy guarantee of project quality and construction safety. High, reduce the effect of installation and construction costs and energy consumption

Active Publication Date: 2019-03-12
FUJIAN MINNAN CONSTR ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The steel structure truss with unique shape and beautiful appearance will greatly increase the visual beauty of the whole building; but the problem is that the large multi-angular cantilever truss has the characteristics of complex shape, difficult construction, and high safety risk of hoisting, which poses a problem for construction. higher technical requirements

Method used

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  • A construction method for overall hoisting of large multi-angular cantilevered trusses
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  • A construction method for overall hoisting of large multi-angular cantilevered trusses

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Embodiment Construction

[0072] Such as figure 1 As shown, a construction method for overall hoisting of large multi-angular cantilevered trusses is characterized in that,

[0073] The steel pipe truss is assembled on site as a whole, and the overall hoisting is carried out after the assembly is completed; after the three welding positions of the truss are connected, they are welded firmly; Hoisting;

[0074] The construction method specifically includes the following steps:

[0075] 1) Processing and manufacturing of pipe truss factory

[0076] ① Rod butt joint

[0077] Before butt jointing, the steel pipes should be processed on the pipe lathe, and then the rods should be butt welded on the special tire frame. The quality of the butt welding seam should meet the first-class requirements; both ends of the joint must require 30° internal chamfering;

[0078] ②Rod blanking

[0079] The blanking cutting of steel pipes and the intersecting surface cutting of intersecting line joints are all processe...

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Abstract

A construction method for integrally hoisting a large-size multi-edge-and-corner overhanging truss is disclosed. Integral assembling of a steel pipe truss is conducted on site, and integral hoisting is conducted after assembling is completed; the truss is connected with three welding positions in a butt-joint mode and then is welded firmly; two 500 t all-terrain cranes and a 350 t all-terrain crane are adopted to hoist the whole truss simultaneously, and step-by-step hoisting is conducted from south to north; the truss is totally provided with three main stress support joints which are all fixed by adopting butt welding, a third calibration point support is located at the top of the truss, a welded ball joint at the position of the third calibration point is a support point of a steel rainshed grid frame actually, a first calibration point support and a second calibration point support are located on both the left and right sides of the bottom of the truss correspondingly, and the first calibration point support and the second calibration point support are global stress supporting points of the truss. The construction method for integrally hoisting the large-size multi-edge-and-corner overhanging truss has the characteristics that the construction safety is high, the construction period is short, the engineering quality is easy to guarantee, the ground integral assembling efficiency is high, and the construction cost is reduced greatly.

Description

technical field [0001] The invention belongs to the field of building construction methods, and relates to a construction method for integrally hoisting a large multi-angular cantilevered truss. Background technique [0002] In recent years, steel structure trusses have been rapidly promoted due to their good seismic performance, strong space flexibility, and beautiful appearance, and are especially widely used in public facilities such as public buildings and large shopping malls. The steel structure truss with unique shape and beautiful appearance will greatly increase the visual beauty of the whole building; but the problem is that the large multi-angular cantilever truss has the characteristics of complex shape, difficult construction, and high safety risk of hoisting, which poses a problem for construction. higher technical requirements. Contents of the invention [0003] In order to make up for the above deficiencies, the present invention provides a construction me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B7/02E04G21/16
CPCE04B7/022E04G21/161E04G21/162
Inventor 邱志章邱振祥林国发
Owner FUJIAN MINNAN CONSTR ENG
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