CN201071566Y

CN201071566Y - Fiber-reinforced plastic-steel pipe-concrete column

Info

Publication number: CN201071566Y
Application number: CNU2007200131554U
Authority: CN
Inventors: 李帼昌
Original assignee: Shenyang Jianzhu University
Current assignee: Shenyang Jianzhu University
Priority date: 2007-07-06
Filing date: 2007-07-06
Publication date: 2008-06-11
Anticipated expiration: 2017-07-06

Abstract

A fiber reinforced plastics-steel tube-concrete column, which relates to an architectural element, consists of a steel tube, a fiber reinforced plastic circular tube and concrete filled therein. The utility model is characterized in that: the steel tube of the concrete column is produced through welding steel plates; the fiber reinforced plastic circular tube is made by winding fiber reinforced plastic cloth on a winding machine, and then arranged in the central part of the concrete column; the geometric center of the fiber reinforced plastic circular tube coincides with that of the concrete column; and the concrete column is filled therein with the concrete. The utility model has the advantages of high bearing capacity, high rigidity, light weight, good plasticity and toughness, good impact resistance and fatigue resistance, great aseismic performance, etc.

Description

A kind of fibre reinforced plastic-steel pipe-concrete column

Technical field

The utility model relates to a kind of building unit, particularly relates to a kind of coupled column of being made up of FRP, steel pipe and three kinds of different materials of concrete.

Background technology

At present, because frame construction has advantages such as flexible arrangement, usage space are big, therefore be subjected to the extensive concern of engineering.And be generally common reinforced concrete post as the frame column of the main member of frame construction, promptly tied up reinforcing cage earlier, propped up template again, last fluid concrete, making this traditional reinforced concrete post exists long in time limit, difficulty is big, inefficient shortcoming, China's utility model patent has provided " a kind of reinforced concrete post " after improving for No. 03248845.9, comprise precast member for reinforcing bar concrete, reinforcing bar, reinforced concrete post is by polylith steel concrete tubular prefabricated units, longitudinal reinforcement network for location sheet, longitudinal reinforcement is formed, polylith steel concrete tubular prefabricated units are overlapped into the post mould, the longitudinal reinforcement network for location sheet that adapts with tubular prefabricated units inner chamber is set between adjacent steel reinforced concrete tubular prefabricated units seam, longitudinal reinforcement interts in longitudinal reinforcement network for location slice graticule, serial connection polylith steel concrete tubular prefabricated units, concreting in the superimposed post mould cavity of steel concrete tubular prefabricated units finally becomes reinforced concrete post again.Though the shortcoming that the reinforced concrete post after this improvement has existed when tentatively having overcome conventional steel reinforced concrete column production can not satisfy the more and more higher requirement of high-rise building to the use concrete structure.For this reason, people develop novel concrete structure again, and for example United States Patent (USP) provides for No. 3051161 uses the concrete filling steel pipe, to increase the encased structures technical scheme of compressive strength.China's utility model patent has provided " a kind of novel steel tube concrete column " for No. 99236299.7, wherein being used for the concrete steel pipe of filling is the special-shaped thin wall steel pipe, be provided with binding bar on each limit of special-shaped thin wall steel pipe, though this steel core concrete column has solved the single problem of existing concrete filled steel tube post shapes, but still exist for the local buckling that prevents thin-wall steel tube binding bar need be set, construction has the shortcoming of inconvenience more.

Summary of the invention

The purpose of this utility model is to provide a kind of FRP-steel tube-concrete post, this concrete column by rectangle or square steel pipe, be placed on the round FRP pipe in the steel pipe and the concrete that is filled in wherein constitutes, its steel pipe is welded by steel plate, can be that rectangle also can be a square, the FRP pipe is entwined by FRP cloth, can reduce the sectional dimension of post, improve the ductility of post, improve the bearing capacity of post.

The purpose of this utility model is achieved through the following technical solutions:

A kind of fibre reinforced plastic-steel pipe-concrete column, form by steel pipe, cylindrical fibre reinforced plastic pipe and the concrete that pours into wherein, the steel pipe of this concrete column is welded by steel plate, cylindrical fibre reinforced plastic pipe is made on winding machine by fibre reinforced plastics cloth, the fibre reinforced plastics pipe is located at the centre of concrete column, the geometric center of fibre reinforced plastics pipe and the geometric center of concrete column overlap, the inside concreting of concrete column.

Aforesaid a kind of fibre reinforced plastic-steel pipe-concrete column, the cross sectional shape of its concrete column are rectangular configuration or square structure.

Aforesaid a kind of fibre reinforced plastic-steel pipe-concrete column, but penetration concrete or penetration concrete not in its fibre reinforced plastics pipe, promptly concrete column can be hollow or solid.

Advantage of the present utility model and effect are:

1. the coupled column formed by FRP, steel pipe and three kinds of different materials of concrete of the utility model, the round FRP pipe that its utilization is placed on steel duct reduces the lateral pressure of core concrete to steel pipe walls, need not to be provided with binding bar, can reduce the sectional dimension of member, steel pipe skeleton can provide interim support when construction, quicken construction.

2. the utility model has improved the bearing capacity of post because the existence of steel pipe has improved the ductility of post, is beneficial to the earthquake zone seismic design.

3. FRP-steel tube-concrete post of the present utility model can reduce the weight of building in use, increases effective usable floor area.

Description of drawings

Fig. 1 is the rectangular solid structural representation of the utility model concrete column;

Fig. 2 is the square solid construction schematic diagram of the utility model concrete column;

Fig. 3 is the rectangle hollow structural representation of the utility model concrete column;

Fig. 4 is the square hollow-core construction schematic diagram of the utility model concrete column;

The specific embodiment

With reference to the accompanying drawings the utility model is elaborated.

The coupled column that FRP of the present utility model (fibre reinforced plastics) pipe-steel tube-concrete post is made up of FRP, steel pipe and three kinds of materials of concrete, it is FRP-steel tube-concrete coupled column, wherein the cross sectional shape of FRP-steel tube-concrete post is rectangular configuration or square structure, can be divided in the FRP pipe penetration concrete and penetration concrete not, promptly be divided into hollow and solid.

Embodiment 1

As shown in Figure 1, the FRP-steel tube-concrete column section that the utility model provides is the rectangular solid structure, mainly is made up of rectangular steel pipe 1, circle FRP pipe 3 and the concrete 2 that pours into wherein.(1) steel pipe is welded by steel plate, and the steel pipe two ends are got on the bus flat at lathe, thereby guarantees the planeness and the verticality at steel pipe both ends, and the steel deck-plate of earlier an end of empty steel pipe being burn-on guarantees that cover plate overlaps with the geometric center of empty steel pipe, and guarantees the quality of weld seam; (2) justify the FRP pipe and adopt the winding method to make, according to the size cutting fabric of designing requirement; Use hairbrush that the bottom cementing agent for preparing evenly is applied on the pvc pipe (mould) that twines thin plastic (playing demoulding effect), the primer that mixes up will use up in official hour, can carry out next step construction when dry to touch; Use round brush or hairbrush, scraper plate to dip in the surface layer cementing agent for preparing and be applied on the pvc pipe uniformly; Carbon cloth is sticked, use hard rubber or plastic scrapers back and forth to roll, drive bubble out of, impel adhesive permeation; Fiber lap length 100mm scrapes upper strata glue after the sticking impregnation of bottom fully permeates, and back and forth blade coating penetrates in the carbon cloth adhesive and goes; After normal temperature 1-2 hour, re-use plastic scrapers and back and forth roll floating and the changing of the relative positions that elimination may occur; Second layer cloth surface is one adhesive of brushing evenly; After leaving standstill one day, the pipe that FRP cloth makes is taken off from pvc pipe.More than work and also can on winding machine, finish.(3) during fluid concrete, at first the FRP pipe is fixed in the steel pipe, guarantees that the geometric center of the two overlaps, steel pipe is vertically placed again, from the top penetration concrete, every penetration concrete 150mm fully vibrates half a minute.The FRP-steel tube-concrete post that makes is placed on maintenance in the fog room, and the maintenance room temperature is about 20 ℃.

Embodiment 2

As shown in Figure 2, the cross section of this FRP-steel tube-concrete post of the present utility model is square solid construction, mainly is made up of rectangular steel tube 4, circle FRP pipe 3 and the concrete 2 that pours into wherein, steel pipe is welded by steel plate, justifies the FRP pipe and is made on winding machine by FRP cloth.

Its concrete preparation method is identical with embodiment 1.

Embodiment 3

As shown in Figure 3, the cross section of this FRP-steel tube-concrete post of the present utility model is the rectangle hollow structure, mainly form by rectangular steel pipe 1, circle FRP pipe 3 and the concrete 2 that pours between rectangular steel pipe and circle FRP pipe, steel pipe is welded by steel plate, and the FRP pipe is made on winding machine by FRP cloth.

Its concrete preparation method is identical with embodiment 1, and difference is that concrete only is cast between rectangular steel pipe and the FRP pipe, concreting not in the FRP pipe.

Embodiment 4

As shown in Figure 4, the cross section of this FRP-steel tube-concrete post of the present utility model is square hollow-core construction, mainly form by rectangular steel tube 4, circle FRP pipe 3 and the concrete 2 that pours between rectangular steel tube and circle FRP pipe, steel pipe is welded by steel plate, and the FRP pipe is made on winding machine by FRP cloth.

Claims

1. fibre reinforced plastic-steel pipe-concrete column, form by steel pipe, cylindrical fibre reinforced plastic pipe and the concrete that pours into wherein, it is characterized in that, the steel pipe of this coagulation upper prop is welded by steel plate, cylindrical fibre reinforced plastic pipe (3) is made on winding machine by fibre reinforced plastics cloth, the fibre reinforced plastics pipe is located at the centre of concrete column, and the geometric center of fibre reinforced plastics pipe and the geometric center of concrete column overlap, the inside concreting (2) of concrete column.

2. a kind of fibre reinforced plastic-steel pipe-concrete column according to claim 1 is characterized in that, the cross sectional shape of concrete column is rectangular configuration or square structure.

3. a kind of fibre reinforced plastic-steel pipe-concrete column according to claim 1 is characterized in that, but penetration concrete or penetration concrete not in the fibre reinforced plastics pipe, and promptly concrete column can be hollow or solid.