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A three-stage relay lifting construction method for long-span arc truss

A construction method and large-span technology, which can be used in construction, building construction, and building material processing, etc., can solve problems such as speeding up, and achieve the effect of simplifying hoisting steps, increasing safety, and reducing workload.

Inactive Publication Date: 2016-08-24
JIANGSU YUANCHEN INSTALLATION GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a three-stage relay lifting construction method for large-span arc-shaped trusses that can solve the problems of road surface load-bearing and operational flexibility, save mechanical costs, and speed up the construction period.

Method used

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  • A three-stage relay lifting construction method for long-span arc truss
  • A three-stage relay lifting construction method for long-span arc truss
  • A three-stage relay lifting construction method for long-span arc truss

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Embodiment 1

[0032] Such as figure 2 As shown, the present invention discloses a three-stage relay lifting construction method of a large-span arc-shaped truss, and the specific steps are as follows:

[0033] S101 Generate a solid model: the accurate blanking of steel pipe components is the guarantee of the accuracy of the ground assembly of steel pipe trusses, so firstly, the design drawings are deepened according to the design plane, elevation, and line model; the 3D The user coordinate system is established separately for each member of the wire mold, and the wire mold is drawn into a 3D solid model by establishing a surface domain and stretching;

[0034] S102 Intersecting line cutting and blanking: use Linkmann intersecting line CNC cutting machine's own software to perform intersecting line cutting, generate processing file codes, input the cutting machine and cut and blank one by one to obtain the main truss steel pipe fittings; arc When welding the truss, first spot-weld and fix ...

Embodiment 2

[0046] In this embodiment, on the basis of embodiment 1, before lifting in step (5), a trial lifting work must be carried out, and the lift should be lifted 20 cm above the ground and kept for 10 minutes without any problems before formal lifting.

[0047] In this embodiment, trial lifting work has been carried out before lifting, which improves the safety performance of construction.

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Abstract

The invention relates to a three-stage-relay hoisting construction method for a large-span arc-shaped truss. According to the method, a large-span arc-shaped steel truss is firstly turned over and corrected by two outdoor cranes and is hoisted to a certain height and located after safety is confirmed, a jib of an indoor crane extends outdoors, a third crane hoisting point is fixed, then, a hoisting hook of one outdoor crane is slowly loosened, and the large-span arc-shaped steel truss is hoisted to an indoor mounting position by the indoor crane and the other outdoor crane. The method has the advantages that the arc-shaped truss construction method adopts the manner that two cranes are used for hoisting outdoors and one crane is used for hoisting indoors in a relay manner, whole one-time hoisting is realized, hoisting steps are simplified, a front supporting scaffold is not required to be established, the construction cost is reduced, and the construction schedule is accelerated; the cost is reduced by over 40%, the construction period is also greatly shortened compared with that of large-sized-crane single hoisting and is shortened by over 30%, and meanwhile, safety quality can be guaranteed.

Description

technical field [0001] The invention relates to a large-span arc-shaped truss lifting construction method, in particular to a large-span arc-shaped truss three-stage relay lifting construction method. Background technique [0002] In the architectural design of modern large-scale venues, various complex aerial steel structures are used more and more. While the shape is novel, the difficulty of installation is also increasing. [0003] A roof steel structure project of a gymnasium is designed with multiple long-span inverted triangular arc-shaped three-branch pipe trusses, such as figure 1 As shown, the arc-shaped three-pipe truss includes a lower chord, multiple vertical webs, multiple diagonal webs and an arc-shaped top chord. When hoisting this arc-shaped three-pipe truss, it is very difficult to hoist as a whole due to site conditions, and The overall hoisting cost is high and the construction period is long. [0004] Therefore, it is imperative to develop a three-stage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G21/14E04G21/16
Inventor 姜建中张海琴吴鸥张海兵邵晓晨
Owner JIANGSU YUANCHEN INSTALLATION GROUP