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On-site prefabrication and installation construction method of long-span prestressed arch slab

A construction method and prefabricated installation technology, applied in the direction of manufacturing tools, building components, ceramic molding machines, etc., can solve the problems of no reinforcement treatment at the joints, easy misplacement of square wood skeletons, and structural integrity effects, so as to improve the construction Efficiency, reducing self-weight, and reducing the effect of steel pipe consumption

Active Publication Date: 2018-01-16
JIANGSU HUAJIANG CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The scaffolding support system used in traditional formwork engineering is to set three risers every 2m. The upper edge of the mandrel square wooden skeleton is made into an arc according to the full size, and the bottom edge is made into a straight line. Each piece must be numbered. The process uses a large number of steel pipes, it is difficult to assemble and disassemble the formwork, and the square timber skeleton is easy to be misplaced
In the installation process of the middle partition, after the middle partition is made, the reserved anchoring steel bars are directly anchored into the upper chord curved panel and the lower chord prestressed flat plate, and the joints are not strengthened, which is easy to affect the integrity of the structure

Method used

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  • On-site prefabrication and installation construction method of long-span prestressed arch slab
  • On-site prefabrication and installation construction method of long-span prestressed arch slab
  • On-site prefabrication and installation construction method of long-span prestressed arch slab

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Embodiment Construction

[0033] This embodiment mode focuses on the embodiments related to the structure of the present invention.

[0034] figure 1 , figure 2 They are the plan view of the long-span prestressed arch slab and the on-site prefabricated elevation of the long-span prestressed arch slab. As shown in the figure, the structure is mainly composed of the upper chord curved panel 3, the lower chord prestressed flat panel 4, the middle partition 8 and the oblique reinforcement 9; the upper chord curved panel 3 is a parabolic groove plate; the lower chord prestressed flat panel 4 is the prestress The groove plate, the prestressed tendon 14 is fixed by the anchor plate 13 on the pedestal 12; the connecting member of the upper chord curved panel 3 and the lower chord prestressed flat panel 4 is the middle partition 8, and the middle partition 8 is a concrete hollow with a rectangular frame structure Prefabricated slabs, the upper and lower ends of the middle partition 8 are provided with reserv...

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Abstract

The invention relates to a construction method for on-site prefabrication and installation of large-span prestressed arch slabs, which mainly includes prestressed tendon layout, middle partition prefabrication, formwork support installation, upper chord curved panel fabrication, middle partition installation, and lower chord prestressed flat slab prestressing. The steps of making flat panels, stretching prestressed tendons, and hoisting arched roof trusses. The method of the invention has the characteristics of safety, reliability, strong stability, high construction efficiency, and can adapt to the site prefabrication requirements of large batches of arch slab roof trusses, etc., and has good economic and technical benefits.

Description

technical field [0001] The invention relates to a construction method for on-site prefabrication and installation of a large-span prestressed arch slab. technical background [0002] The long-span prestressed arch slab roof truss consists of three major components: upper chord, lower chord and vertical connecting plate. The upper and lower chord components are in the shape of a channel plate, and the middle partition connecting the upper and lower chords is a concrete hollow prefabricated slab with a rectangular frame structure. This structural form that combines roof panels and roof trusses makes the roof system have good overall performance, light weight, good seismic performance, and can not only bear weight, but also keep heat and heat insulation. It has been widely used in the construction of large granaries. middle. Due to the large span of the large-span prestressed arch slab, the transportation is inconvenient, so the method of on-site prefabrication is generally a...

Claims

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Application Information

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IPC IPC(8): E04B7/08E04B7/10E04B1/342E04G21/14B28B23/04
Inventor 王新泉
Owner JIANGSU HUAJIANG CONSTR GROUP
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