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Prestressed fibre reinforced steel concrete structure and its prestressed construction method

A technology of concrete structure and reinforced concrete, applied in building structure, construction and other directions, can solve the problems of underutilized plastic properties of steel, poor tensile properties, small spanning ability, etc., to achieve high stiffness, light weight, large The effect of leapfrog

Inactive Publication Date: 2003-04-30
卓静
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the field of civil engineering, the commonly used reinforced concrete and steel concrete structures have the disadvantages of heavy weight and small spanning capacity.
And because concrete is a kind of material with good compressive performance but poor tensile performance (generally 2-5MPa), it is easy to crack and damage
In addition, with the continuous development of society, people have put forward new requirements for civil engineering, such as light structure, wide space, large bearing capacity, etc., so it is difficult to adopt ordinary reinforced concrete structures and steel concrete structures. Meet the needs of modern large-scale civil engineering
Moreover, for steel concrete structures, the plastic properties of steel have not been fully utilized when designing according to the allowable stress method.

Method used

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  • Prestressed fibre reinforced steel concrete structure and its prestressed construction method
  • Prestressed fibre reinforced steel concrete structure and its prestressed construction method
  • Prestressed fibre reinforced steel concrete structure and its prestressed construction method

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Embodiment Construction

[0033] Below in conjunction with embodiment, further illustrate the present invention.

[0034] as attached Figure 6 The shown test beam member adopts a structure formed by welding a channel steel 7 on the upper wing plate 6 of the I-shaped steel 5. The height of the combined structure is 140 mm, and the width of the lower wing plate 3 is 68 mm. The width of the channel steel 7 is 63mm, and the length of the test beam is 2m. The construction steps of pre-bending and pre-stressing technology of reverse loading and then forward loading of the test beam:

[0035] 1. Reverse loading prebending prestressing construction steps:

[0036] In order to facilitate the loading and pasting of carbon fiber cloth, the test beam member was turned over 180 degrees, and a single-point loading scheme was adopted.

[0037] ① Reversely load the section steel composite structure so that the lower flange 3 is under tension and reaches 0.9 times the yield strain of the steel, and the load is sust...

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Abstract

The present invention relates to prestressed fibre-reinforced section steel concrete structure and its prestressing construction method. The present invention is mainly composed of fibre cloth, section steel and concrete. The invented prestressed fibre-reinforced section steel concrete structure possesses the advantages of light-weight, high rigidity, bearing capacity of heavy load, very large spanning ability, etc. Its construction method is simple, and the formed engineering structure performance is excellent.

Description

1. Technical field [0001] The invention belongs to civil engineering structures and construction methods thereof, in particular to engineering structures with special requirements and construction methods thereof. 2. Background technology [0002] At present, in the field of civil engineering, the commonly used reinforced concrete and steel concrete structures have the disadvantages of heavy weight and small spanning ability. And because concrete is a material with good compressive performance but poor tensile performance (generally 2-5MPa), it is easy to crack and damage. In addition, with the continuous development of society, people have put forward new requirements for civil engineering, such as light structure, wide space, large bearing capacity, etc., so it is difficult to adopt ordinary reinforced concrete structures and steel concrete structures. Meet the needs of modern large-scale civil engineering. Moreover, for steel concrete structures, the plastic properties ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/18E04B1/30
Inventor 卓静
Owner 卓静
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