CN205330003U

CN205330003U - Carbon fiber thin wall steel tube concrete combination column of built -in FRP section bar

Info

Publication number: CN205330003U
Application number: CN201520796733.0U
Authority: CN
Inventors: 徐诚皓; 徐亚丰; 牟璐; 张月; 朱绍杰
Original assignee: Shenyang Jianzhu University
Current assignee: Shenyang Jianzhu University
Priority date: 2015-10-16
Filing date: 2015-10-16
Publication date: 2016-06-22
Anticipated expiration: 2025-10-16

Abstract

The utility model aims at providing a carbon fiber thin wall steel tube concrete combination column of built -in FRP section bar, constitute including FRP section bar, thin wall steel tube, outer jacket and concrete, the setting of FRP section bar put at thin wall steel tube 's central point. FRP section bar and thin wall steel tube between fill and have the concrete, thin wall steel tube have an outer jacket around the package outward. The outer jacket be the carbon fiber reinforcement plastics. Be the cross or I -shaped or the T type is circular or square in FRP section bar cross -section. The thin wall steel tube cross -section be circular or polygon. Built -in FRP section bar cross sectional area and the whole cross sectional area's of combination column ratio be not more than 15%.

Description

A kind of carbon fiber thin wall steel tube concrete coupled column of built-in FRP section bar

Technical field

This utility model belongs to technical field of civil engineering, particularly relates to the carbon fiber thin wall steel tube concrete coupled column of a kind of built-in FRP section bar。

Background technology

The same with the every other industry in national economy field, since reform and opening-up, China's building trade experienced by the process of a high speed development。Along with the development of China's urbanization, capital expenditure is in the large-scaled construction period, makes civil engineering industry be in the state of continuous expansion all the time。Thin wall steel tube concrete (Concrete-FilledSteelTube is reduced to CFST) is by thin-wall boards, light gauge cold-formed steel shape (including thin-wall steel tube) Combined concrete cooperative a kind of new structure。It is made up of casting concrete in steel pipe, and it takes full advantage of confined concrete bearing capacity when three dimension stress and feature that ductility be greatly improved is greatly improved。This class A of geometric unitA major part is subject to pressure load, has the bearing capacity that comparison is high, good anti-seismic performance, it is possible to effectively save steel and template and the outstanding advantages such as site operation is convenient and swift。It can adapt to modern project structure to big across development towering, heavily loaded and the needs bearing mal-condition, meet the industrial requirement of Modern Construction Technology, be conducive to advancing the optimization and upgrading of Modern industrial, therefore can be widely used in Urban Bridge, longspan structure, high level or high-rise building。

Although concrete filled steel tube advantage is a lot of, slimmer and more graceful than what reinforced concrete structure came, and steel construction is heavier than slightly aobvious, but, along with the deadweight of the increase structure of floor height is consequently increased。Any building structure is all made up of various materials, thus the development of structure and breakthrough be unable to do without again development and the change of material。Fibre reinforced composites (are called for short FRP) because specific strength is high, and specific modulus is big, and material property has designability, corrosion resistance and excellent in durability, and thermal coefficient of expansion is close with concrete, is increasingly becoming a kind of new structural material of field of civil engineering。The form of the FRP goods being applied in civil engineering is varied, mainly has following several: FRP sheet material, FRP bar, FRP section bar and FRP protruding end etc.。

Summary of the invention

The defect that this utility model exists to overcome prior art, the purpose of this utility model is to provide the carbon fiber thin wall steel tube concrete coupled column of a kind of built-in FRP section bar。

The technical solution that this utility model adopts is the carbon fiber thin wall steel tube concrete coupled column of a kind of built-in FRP section bar, form including FRP section bar, thin-wall steel tube, outer jacket and concrete, described FRP section bar is arranged on the center of thin-wall steel tube, thus alleviating the weight of pillar, reduce column dimensions。

It is filled with concrete between described FRP section bar and thin-wall steel tube, outside described thin-wall steel tube, is surrounded with outer jacket。Described outer jacket is carbon fibre reinforced plastic。The advantage that three dimension stress concrete crushing strength is high can be given full play to, the flexing of steel pipe can be avoided simultaneously, and bearing capacity is higher, durability is better。

Described FRP section bar cross section is that cross is I-shaped T-shaped circular or square。

Described thin-wall steel tube cross section is circular or polygon, takes full advantage of thin-wall steel tube confined concrete bearing capacity when three dimension stress and feature that ductility be greatly improved is greatly improved。This class A of geometric unitA major part is subject to pressure load, has the bearing capacity that comparison is high, good anti-seismic performance, it is possible to effectively save steel and template and also site operation is convenient and swift etc.。

The ratio of described built-in FRP section bar area of section and coupled column global sections area is not more than 15%。

Compared with prior art, this utility model is had the beneficial effect that

1. make full use of the characteristic of fibrous material, improve the drawbacks such as the concrete fragility of common steel tube, tension, shearing resistance and bending strength be relatively low；

2. the concrete in steel pipe is in three-phase pressured state, improves the ultimate bearing capacity of pillar；

3. the FRP section bar being positioned at core place alleviates concrete column weight, improves bearing capacity and the ductility of steel core concrete column；

4. owing to the existence of FRP section bar, steel pipe improves the ductility of post, improve the ultimate bearing capacity of post, be conducive to earthquake territory Aseismic Design；

5. the carbon fibre reinforced plastic outside steel pipe can give full play to the advantage that three dimension stress concrete crushing strength is high, can avoid the flexing of steel pipe simultaneously, and bearing capacity is higher, durability is better。

Accompanying drawing explanation

Fig. 1 is this utility model FRP section bar cross section be T-shaped thin-wall steel tube cross section is circular configuration schematic diagram；

Fig. 2 is this utility model FRP section bar cross section be I-shaped thin-wall steel tube cross section is circular configuration schematic diagram；

Fig. 3 is this utility model FRP section bar cross section be square thin-wall steel tube cross section is circular configuration schematic diagram；

Fig. 4 is this utility model FRP section bar cross section be Circular Thin steel tube section is circular configuration schematic diagram；

Fig. 5 is this utility model FRP section bar cross section be cross thin-wall steel tube cross section is circular configuration schematic diagram；

Fig. 6 is this utility model FRP section bar cross section be T-shaped thin-wall steel tube cross section is quadrilateral structure schematic diagram；

Fig. 7 is this utility model FRP section bar cross section be I-shaped thin-wall steel tube cross section is quadrilateral structure schematic diagram；

Fig. 8 is this utility model FRP section bar cross section be square thin-wall steel tube cross section is quadrilateral structure schematic diagram；

Fig. 9 is this utility model FRP section bar cross section be Circular Thin steel tube section is quadrilateral structure schematic diagram；

Figure 10 is this utility model FRP section bar cross section be cross thin-wall steel tube cross section is quadrilateral structure schematic diagram；

In figure:

1, FRP section bar, 2, concrete, 3, thin-wall steel tube, 4, outer jacket。

Detailed description of the invention

If Fig. 1 is to shown in 10, a kind of carbon fiber thin wall steel tube concrete coupled column of built-in FRP section bar, form including FRP section bar, thin-wall steel tube, outer jacket and concrete, described FRP section bar is arranged on the center of thin-wall steel tube, it is filled with concrete between described FRP section bar and thin-wall steel tube, outside described thin-wall steel tube, is surrounded with outer jacket。Described outer jacket is carbon fibre reinforced plastic。The ratio of described built-in FRP section bar area of section and coupled column global sections area is not more than 15%。

Embodiment 1:

Described FRP section bar cross section is T-shaped, and described thin-wall steel tube cross section is circular。

Embodiment 2:

The thin-wall steel tube cross section that described FRP section bar cross section is I-shaped, described is circular。

Embodiment 3:

The thin-wall steel tube cross section that described FRP section bar cross section is square, described is circular。

Embodiment 4:

Described FRP section bar cross section is circular, and described thin-wall steel tube cross section is circular。

Embodiment 5:

Described FRP section bar cross section is cross, and described thin-wall steel tube cross section is circular。

Embodiment 6:

Described FRP section bar cross section is T-shaped, and described thin-wall steel tube cross section is tetragon。

Embodiment 7:

The thin-wall steel tube cross section that described FRP section bar cross section is I-shaped, described is tetragon。

Embodiment 8:

The thin-wall steel tube cross section that described FRP section bar cross section is square, described is tetragon。

Embodiment 9:

Described FRP section bar cross section is circular, and described thin-wall steel tube cross section is tetragon。

Embodiment 10:

Described FRP section bar cross section is cross, and described thin-wall steel tube cross section is tetragon。

Of the present utility model ultimate principle, principal character and of the present utility model advantage have more than been shown and described。Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description is that principle of the present utility model is described; under the premise without departing from this utility model spirit and scope, this utility model also has various changes and modifications, and these changes and improvements both fall within the scope of claimed this utility model。This utility model claims scope and is defined by appending claims and equivalent thereof。

Claims

1. the carbon fiber thin wall steel tube concrete coupled column of a built-in FRP section bar, it is characterized in that: include FRP section bar, thin-wall steel tube, outer jacket and concrete composition, described FRP section bar is arranged on the center of thin-wall steel tube, it is filled with concrete between described FRP section bar and thin-wall steel tube, outside described thin-wall steel tube, is surrounded with outer jacket；Described outer jacket is carbon fibre reinforced plastic；Described FRP section bar cross section is that cross is I-shaped T-shaped circular or square；Described thin-wall steel tube cross section is circular or polygon；The ratio of described built-in FRP section bar area of section and coupled column global sections area is not more than 15%。