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Concrete reinforced column for steel framework of hybrid FRP (Fiber Reinforced Plastic) pipe

A technology of concrete and composite columns, applied in the direction of columns, pier columns, pillars, etc., can solve the problems of FRP pipe damage and unsatisfactory ductility, and achieve the effect of increasing utilization

Active Publication Date: 2012-08-15
徐州新南湖科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research on concrete columns with single carbon fiber and glass fiber tubes has become a hotspot, but the concrete with single FRP tubes has problems such as unsatisfactory ductility and sudden failure of FRP tubes.

Method used

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  • Concrete reinforced column for steel framework of hybrid FRP (Fiber Reinforced Plastic) pipe
  • Concrete reinforced column for steel framework of hybrid FRP (Fiber Reinforced Plastic) pipe
  • Concrete reinforced column for steel framework of hybrid FRP (Fiber Reinforced Plastic) pipe

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Experimental program
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Effect test

Embodiment 1

[0036] now attached figure 1 Further explain the present invention: first determine the size and model of steel frame 1 and hoist it in place, bind longitudinal steel bars 2 and stirrup bars 3 on the periphery of steel frame 1, formwork is supported on the outside after the reinforcement is arranged, and concrete is poured in the formwork 4. After curing until the strength of the concrete 4 meets the requirements for form removal, remove the formwork, and finally paste hybrid FRP materials on the outside of the column to form a hybrid FRP pipe 5 .

[0037] The column in this embodiment adopts a square column with a side length of 700mm, and the length of the column is 3m.

[0038] The type of steel used in steel frame 1 is Q235, the total length of the vertical and transverse webs (the distance between the flange ends) of the steel frame 1 section is 378mm, and the width is 7mm; the steel frame 1 is connected with the web The length of the four outer flange plates is 200mm, a...

Embodiment 2

[0044] This embodiment adopts the same implementation steps as in Embodiment 1, but adopts different cross-sectional dimensions, such as Figure 7 Shown:

[0045] The type of steel used in steel frame 1 is Q235, the length of the web between the ends of the two flanges of the steel frame 1 section is 460 mm, and the width is 12 mm; the lengths of the two flange plates connected to the web in steel frame 1 are both 158 mm. The width is 20mm.

[0046] Four HRB335 longitudinal steel bars 2 with a diameter of 20mm are used on the column section, and one is arranged at each of the four corners of the column section. The clear distance between the longitudinal steel bars 2 and the outer surface of the concrete column is 35mm.

[0047] The stirrup 3 adopts HPB235 grade steel bars with a diameter of 10mm, and the spacing along the longitudinal direction is 150mm.

[0048] The grade of concrete 4 is C30.

[0049] The outer surface of the concrete column is pasted with two layers of ...

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Abstract

The invention provides a concrete reinforced column for a steel framework of a hybrid FRP (Fiber Reinforced Plastic) pipe and belongs to the field of buildings. The concrete reinforced column comprises a steel framework, a hybrid FRP pipe and concrete filled between the steel framework and the hybrid FRP pipe. Compared with the traditional steel pipe concrete reinforced column and a steel pipe high-strength concrete reinforced column, the concrete reinforced column can be used for improving the bearing force, the transformation capacity and the anti-vibration property. The concrete reinforced column provided by the invention is applicable to the technical field of structures of concrete reinforced columns, so that the concrete reinforced column not only can be used for a new construction structure but also can be used for reinforcing and hoisting engineering of the steel framework concrete reinforced column.

Description

technical field [0001] The object of the present invention is to provide a hybrid FRP tubular steel-reinforced concrete composite column, which is suitable for the technical field of concrete composite column structures. technical background: [0002] Steel-reinforced concrete composite columns have high bearing capacity and good ductility, and are widely used in high-rise building anti-seismic. Many scholars at home and abroad have conducted research on the situation of small axial compression ratio or low concrete strength. Some domestic scholars have studied the seismic performance of high-strength concrete composite columns under high axial compression ratio, and found that the ductility of composite columns under high axial compression ratio is not ideal. For example, Ye Lieping conducted experimental research on the seismic performance of C60 concrete-steel-reinforced composite columns, and found that when the axial compression ratio is greater than or equal to 0.4, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C3/34
Inventor 邓宗才肖锐
Owner 徐州新南湖科技有限公司
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