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Construction method for integral hoisting of roof primary and secondary structure assembly units

A technology of assembling units and overall hoisting, which is applied in the direction of building construction and construction, which can solve the problems of high safety risks and low efficiency of manual installation at high altitudes, and achieve the effects of stable installation, favorable inspection and acceptance, and quality and safety

Active Publication Date: 2021-11-19
CHANGJIANG & JINGGONG STEEL STRUCTURE GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When building a factory building with a portal frame structure with a large span between columns and heavy purlins, if the traditional installation mode is followed, the roof beams are installed and then scattered at high altitude and secondary components such as purlins are installed, which will lead to low efficiency of manual installation at high altitude , high security risk

Method used

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  • Construction method for integral hoisting of roof primary and secondary structure assembly units
  • Construction method for integral hoisting of roof primary and secondary structure assembly units
  • Construction method for integral hoisting of roof primary and secondary structure assembly units

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The construction method for the overall hoisting of the roof primary and secondary structure assembly units includes the following steps in sequence:

[0033] S1. According to the site plan, hoist the installation area in blocks and sections, select the supporting parts between columns to install the overall hoisting unit, and then bulk install and connect parts in blocks at high altitude;

[0034] Divide the roof into multiple installation units according to the drawings and the actual situation on site. On the flat ground in the installation unit area, place the two steel beams that belong to the supporting parts between adjacent columns in the same span, adjust the distance between the two steel beams, and control the two ends of the two steel beams to be even, so as to ensure the Component installation accuracy.

[0035] S2. A plurality of purlins are connected and installed between two steel beams on the ground. Multiple purlin struts, multiple purlin diagonal br...

Embodiment 2

[0041] Please combine Figure 2 to Figure 4 The difference between Embodiment 2 and Embodiment 1 is that each purlin 4 is connected and fixed on the corresponding steel beam 1 through a locking assembly, which not only makes the connection between steel beam 1 and purlin 4 more stable and reliable, but also facilitates Disassembly and assembly of purlin 4 on steel beam 1.

[0042]The steel beam 1 in this embodiment includes an upright web 2 and two flange plates 1-3 vertically fixed on the bottom and top of the web 2 respectively. The purlin 4 has a flange plate 2 5 , and realizes butt joint between the flange plate 2 5 at the bottom and the flange plate 1 3 at the top of the web 2 .

[0043] The locking assembly includes an outer cylinder 9 inserted on the top flange plate 3 of the steel beam 1 . In this embodiment, the cross-sections of the outer cylinder 9, the first through hole 7, and the second through hole can be in a quadrilateral structure, so as to realize the stab...

Embodiment 3

[0056] Embodiment 3 is an economical comparison between the construction method of overall hoisting of the roof primary and secondary structure assembly units in Embodiment 1 and the traditional installation method.

[0057] Using the traditional installation method, 2 people on the ground assemble a crane, and a group of 4 people lift it. One crane can lift 12 steel beams a day on average. However, the overall hoisting of the installation unit in Embodiment 1 is adopted, 4 people and 1 crane are assembled on the ground, and 2 cranes are hoisted in a group of 8 people. On average, the hoisting of 6 groups of units can be completed in one day. 6 groups of units are 12 steel beams and systems. Secondary components such as rods, purlins, braces, corner braces, etc. The traditional installation method also requires a crane to hoist the secondary components to the roof, 2 people to disperse the purlins, 2 people to install the purlins, a group of 4 people to install the braces, and...

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Abstract

The invention relates to the technical field of building construction, and discloses a construction method for integral hoisting of roof primary and secondary structure assembly units. The construction method sequentially comprises the following steps that a roof is divided into a plurality of installation units according to drawings and on-site actual conditions; on the flat ground of an installation unit area, two steel beams of adjacent inter-column supporting parts belonging to the same span are vertically placed, the distance between the two steel beams is adjusted, the two ends of the two steel beams are controlled to be flush, and the installation precision of secondary components is guaranteed; and a plurality of purlines are installed in a connecting mode between the two steel beams on the ground. Through an integral hoisting and local bulk installation method, a good experience method is provided for engineering with large inter-column span and large secondary component dead weight, that is, two span beams, middle tie bars and the secondary components such as the purlines, angle braces and braces between the beams are assembled into an installation unit on the ground, the primary and secondary structure installation units of the roof are integrally hoisted through a crane, so that the installation efficiency is improved, and the risk of high-altitude installation is reduced.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method for overall hoisting of roof primary and secondary structure assembly units. Background technique [0002] Usually, the secondary components of the roof of the factory building with portal frame structure are installed on the roof beams after the installation of the main structure is completed. The overall hoisting construction method of the primary and secondary structural units of the ground assembly has high requirements on the site. The site must be flat and compacted and meet the requirements of on-site assembly and lifting construction. The selection of lifting points and the synchronization of hoisting during the hoisting process require precision. [0003] Since the weight of the purlin is determined by the material of the purlin, the section and length of the purlin, and the large span between the columns of the project will increase t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/35
CPCE04B1/3511E04B2001/3577
Inventor 张泉谷朱官龙管井兵夏俊杜丽娟
Owner CHANGJIANG & JINGGONG STEEL STRUCTURE GRP CO LTD
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