CN213418235U

CN213418235U - Prefabricated assembled FRP pipe-concrete-steel pipe combination column

Info

Publication number: CN213418235U
Application number: CN202022078220.XU
Authority: CN
Inventors: 赖江涛; 陈光明; 吴建营
Original assignee: South China University of Technology SCUT
Current assignee: South China University of Technology SCUT
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-06-11
Anticipated expiration: 2030-09-21

Abstract

The utility model provides a prefabricated assembled FRP pipe-concrete-steel pipe combination post, including two at least combination post segments, every combination post segment all is including the FRP pipe segment section that is located the outside, the steel pipe segment section that is located FRP pipe segment section and the concrete layer that is located between FRP pipe segment section and the steel pipe segment section, connects between two steel pipe segment sections of two arbitrary adjacent combination post segments fixedly, and fixes through the reinforcing bar between two concrete layers of two adjacent combination post segments. Implement the utility model and similar columnar structure need not to carry out complicated concrete placement at the scene, only needs to realize connecting prefabricated combination post segment through the steel pipe segment section from the area, local pre-buried reinforcing bar and steel sleeve, can obtain required combination post, and construction speed is fast, site operation convenience, easy operation. The flange plate, the reinforcing steel bars and the reinforcing steel bar sleeve for connection can also be used as a stiffening or reinforcing measure of the combined column, so that the structural performance of the combined column is improved.

Description

Prefabricated assembled FRP pipe-concrete-steel pipe combination column

Technical Field

The utility model relates to a novel integrated configuration, more specifically say, relate to a prefabricated assembled FRP pipe-concrete-steel pipe combination post.

Background

The FRP-concrete-steel double-wall hollow member is a novel combined member provided by Tenglorio professor of hong Kong's science of physics, and consists of an FRP outer pipe, a steel inner pipe and concrete filled between the FRP outer pipe and the steel inner pipe. In the novel combined structure, the concrete filled inside is subjected to the common constraint action of the FRP outer pipe and the steel inner pipe, and has high compressive strength and better deformability compared with the unconfined concrete; the steel pipe is restrained by the outer concrete and the FRP pipe at the same time, so that outward buckling can be effectively avoided, the strength of the steel pipe can be fully utilized, and the steel pipe and the FRP pipe can be used as a template for pouring concrete; the FRP outer pipe not only provides a shearing resistance effect, but also provides restraint for concrete and steel pipes, improves the stress performance of the concrete and the steel pipes, and simultaneously can protect the steel inner pipe and the concrete from being corroded by a corrosive environment.

The prior research shows that the combined column is very suitable for large-scale column-shaped and similar tubular structures. However, the existing cast-in-place construction and construction method is complex and tedious. In order to promote the application of the composite column, a new construction method needs to be invented, so that the construction and the construction of the composite column are carried out quickly, conveniently and simply.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that, because FRP pipe-concrete-steel pipe combination post relates to the use of three kinds of materials (steel, concrete, FRP), and if the process of building adopts the cast in situ concrete, will lead to building the site material and stack more, construction process is complicated, loaded down with trivial details, construction quality is difficult to guarantee. Aiming at the defects of the prior art, the prefabricated FRP pipe-concrete-steel pipe combined column is provided.

In order to realize the purpose of the utility model, the utility model provides a prefabricated FRP pipe-concrete-steel pipe combination column, which comprises at least two combination column segments,

each combined column segment comprises an FRP pipe segment positioned at the outer side, a steel pipe segment positioned in the FRP pipe segment and a concrete layer positioned between the FRP pipe segment and the steel pipe segment,

two steel pipe sections of any two adjacent combined column sections are fixedly connected, and two concrete layers of the two adjacent combined column sections are fixed through reinforcing steel bars.

Furthermore, two steel pipe sections of any two adjacent combined column sections are welded and fixed.

Furthermore, two adjacent steel pipe sections are fixedly provided with steel flanges at opposite ends, and the two adjacent steel pipe sections are fixedly connected with the two steel flanges through bolts in a matched mode. When the inner diameter of the steel pipe section is larger, the connection mode can be adopted, and the steel flange and the bolt connection can be conveniently operated only when the inner diameter of the steel pipe section is larger, so that the steel pipe connected by the steel flange and the bolt is not suitable for the condition that the inner diameter of the steel pipe is smaller; when the steel pipe sections are connected by welding, the steel pipe section is not limited by the inner diameter of the steel pipe.

Further, the inner diameter of each of said steel duct segments is at least 800 mm. The inner diameter of the steel pipe section is limited, so that the steel pipe section is provided with sufficient operation positions, and an operator can enter the steel pipe section to fix two adjacent steel pipe sections.

Further, the cross-sectional shapes of the steel pipe segments and the FRP pipe segments are any one of circular, oval, square, and rectangular.

Further comprises a steel bar sleeve, wherein one end of the steel bar sleeve is provided with internal threads, the other end of the steel bar sleeve is provided with a pore canal along the length direction,

the reinforcing bars include a first reinforcing bar and a second reinforcing bar,

one of any two adjacent combined column sections is defined as a first combined column section, the other one of any two adjacent combined column sections is defined as a second combined column section, one end of the first steel bar is in threaded connection with the steel bar sleeve, the first steel bar and the steel bar sleeve are both embedded in the concrete layer of the first combined column section, one end of the second steel bar is embedded in the concrete layer of the second combined column section, and the other end of the second steel bar extends outwards and is fixed in a pore channel of the steel bar sleeve.

Through set up the reinforcing bar in two adjacent concrete layers, and through reinforcing bar muffjoint between two reinforcing bars, realize that the connection between two concrete layers is fixed.

Furthermore, a plurality of second steel bars are uniformly arranged in the concrete layer of the second combined column section in the circumferential direction, and a plurality of steel bar sleeves and a plurality of first steel bars are correspondingly arranged in the concrete layer of the first combined column section. So set up, can strengthen the connection stability between the two adjacent concrete layers for connection between the two is more firm.

Further, a grouting concrete layer is arranged between the second steel bars and the pore channel. And fixing the second steel bars in the pore channel through a grouting concrete layer.

Furthermore, a grouting opening and a grout outlet are formed in the FRP pipe section of the first combined column section, the grouting opening and the grout outlet are communicated with the hole channel of the steel bar sleeve, the grouting opening is close to the second combined column section, and the grout outlet is close to the other end, far away from the second combined column section, of the hole channel. So set up, through grout mouthful toward pouring into grout material in the pore, when grout material flowed out from the grout outlet, stopped the grout, accomplished grout concrete layer's setting.

Furthermore, the joint of two concrete layers of any two adjacent combined column segments is filled with grouting material, and the joint is communicated with the grouting opening.

Compared with the prior art, the utility model discloses following beneficial effect has at least: the FRP pipe-concrete-steel pipe combined column needs to be prefabricated into combined column sections in sections, and then the connection between concrete layers of adjacent combined column sections is realized through pre-embedded steel bar sleeves and steel bars and through grouting materials; adjacent steel pipe sections are connected through welding or steel flanges and bolts; the FRP pipe sections of adjacent combined pipes are in direct contact without additional connecting measures. Therefore, only the sleeve is grouted, large-scale concrete pouring on site is not needed, and construction is rapid and convenient. In addition, the steel flanges for connecting the steel pipe sections and the steel bar sleeves for connecting the concrete layers are used as connecting pieces of adjacent combined columns and also used as stiffening or reinforcing measures between the concrete and the two pipes, so that the structural performance of the combined column is improved.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic perspective view of the utility model before two adjacent prefabricated combination column segments are connected.

Fig. 2 is the utility model discloses two adjacent prefabricated combination post segmental joints connect the back stereogram.

Fig. 3a is a schematic longitudinal section view of two adjacent prefabricated combination column segments after the connection is completed.

Fig. 3b is a schematic cross-sectional view a-a in fig. 3 a.

Fig. 3c is a schematic cross-sectional view B-B in fig. 3 a.

Fig. 3d is a schematic cross-sectional view C-C in fig. 3 a.

Fig. 3e is a schematic cross-sectional view D-D in fig. 3 a.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

Referring to fig. 1 to fig. 3e, in the prefabricated FRP pipe-concrete-steel pipe combination column provided in this embodiment, a plurality of (at least two) sections of combination column segments are prefabricated in advance, and then the plurality of sections of combination column segments are connected and fixed to obtain a desired combination column.

Referring to fig. 1 (for convenience, only two combined column sections are shown in the figure), each combined column section 1 includes an FRP pipe section 11 located at the outer side, a steel pipe section 12 located in the FRP pipe section 11, and a concrete layer 13 located between the FRP pipe section 11 and the steel pipe section 12. Two steel pipe sections 12 of any two adjacent combined column sections 1 are connected and fixed, and two concrete layers 13 of the two adjacent combined column sections 1 are fixed through steel bars. Two FRP pipe sections 11 of two adjacent combined column sections 1 are in direct contact without additional connecting measures.

In detail, referring to fig. 2, in this embodiment, two steel flanges 4 are fixedly disposed at opposite ends of two adjacent steel pipe segments 12, and the two adjacent steel pipe segments 12 are fixedly connected to each other by bolts 5 and the two steel flanges 4. In the embodiment provided by the utility model, the mode that steel flange 4 and bolt 5 are connected is adopted in the connection of adjacent steel pipe segment 12. The steel flanges are prefabricated at the factory and then welded into position at the ends of the steel duct segments 112. The bolts are steel bolts, and nuts and washers need to be equipped for use when the steel bolts are used for locking the two steel flanges. And a gasket and a sealing layer are arranged between the contact surfaces of the steel flanges 4, so that adjacent steel pipe sections can be tightly connected, and the construction error can be adjusted. It should be noted that the method of connecting the steel pipe segments is not limited to the bolting in this example, and may be implemented in any other way that is easily grasped by those skilled in the art. For example, in some applications, the segments may be joined by conventional welding.

The inner diameter of each steel tube segment is at least 800 mm. The inner diameter of the steel pipe section is limited, so that the interior of the steel pipe section has sufficient operation positions, and an operator can enter the steel pipe section and fasten two adjacent steel flanges through bolts.

In detail, still be provided with steel sleeve 6, steel sleeve 6's one end is provided with the internal thread, the pore has been seted up along length direction to the other end, one of them is first combination post section in the arbitrary two sets of combination post sections 1 of definition, another is second combination post section, the reinforcing bar includes first reinforcing bar 21 and second reinforcing bar 22, the internal thread threaded connection of one end and steel sleeve 6 of first reinforcing bar 21, and first reinforcing bar 21 and steel sleeve 6 are all buried underground in the concrete layer of first combination post section, the one end of second reinforcing bar 22 is pre-buried in the concrete layer of second combination post section, the other end stretches into outwards and fixes in steel sleeve 6's pore, second reinforcing bar 22 is fixed through setting up grout concrete layer 7 between the inner wall in second reinforcing bar 22 and pore.

A grouting opening 111 and a grout outlet 112 are arranged on the FRP pipe segment of the first combined column segment, the grouting opening 111 and the grout outlet 112 are both communicated with the pore channel of the steel bar sleeve 6, the grouting opening 111 is close to the second combined column segment, and the grout outlet 112 is close to the other end, far away from the second combined column segment, in the pore channel. So set up, can be through pouring into concrete in grout mouth 111 to the pore, when the concrete flows out from the grout outlet, show that the pore has been full of the concrete this moment, form pouring concrete layer 7 with fixed second reinforcing bar 22.

Referring to fig. 1 and 2, in the present embodiment, a plurality of second steel bars are uniformly arranged in the concrete layer of the second combined column segment along the outer circumferential direction of the steel pipe segment, and correspondingly, a plurality of steel bar sleeves 6 and first steel bars are arranged in the first combined column segment, and a plurality of grouting ports and grout outlets are correspondingly arranged in the first combined column segment. So set up, can strengthen the connection stability on two concrete layers of adjacent two combination post sections for it is more firm to connect.

In detail, the joint of two concrete layers 13 of any two adjacent combined column sections 1 is filled with grouting material 8, and the joint is communicated with the grouting opening 111. When grouting material is poured into the pore channel through the grouting opening, the grouting material can be simultaneously filled at the joint of the two adjacent concrete layers 13. Thus, the connection between the two can be more stable.

In detail, the direct contact between the two FRP pipe segments 11 of the two adjacent combined column segments 1 does not need additional connecting measures, and the joint between the two FRP pipe segments is sealed by concrete or mortar or an adhesive.

The section of the steel pipe segment 12 is any one of circular, oval, square and rectangular, and the section of the FRP pipe segment 11 is any one of circular, oval, square and rectangular. The section shapes of the steel pipe sections and the FRP pipe sections in the same combined column section can be the same or different.

The combined column sections with relatively small length are prefabricated in advance in a factory, then the combined column sections with required number are assembled and fixed with each other on a construction site, namely, the steel pipe sections of the adjacent combined column sections are welded and fixed or fixed through steel flange bolts, then the pouring material is filled between the steel bar sleeve and the steel bars to form a pouring concrete layer, so that the adjacent combined column sections can be fixed, large-scale concrete pouring is not needed on the construction site, the construction is quicker and more convenient, and the combined columns with different lengths can be obtained according to requirements. In addition, the steel flanges for connecting the steel pipe sections and the steel bar sleeves for connecting the concrete layer can be used as a connecting piece between adjacent combined column sections, and can also be used as a stiffening or reinforcing measure between the concrete and the steel pipe sections and between the concrete and the FRP pipe sections, so that the structural performance of the combined column is improved.

The method for connecting the combined column segments into the required combined column comprises the following steps:

(1) aligning the first combined column segment embedded with the steel bar sleeve with the second combined column segment embedded with the second steel bar, and sleeving the second steel bar into the pore channel of the steel bar sleeve;

(2) fixing the steel pipe sections of the first combined column section and the second combined column section in a welding or bolt connection mode;

(3) sealing the joint of the FRP pipe segments of the first combined column segment and the FRP pipe segments of the second combined column segment, for example, any one of concrete, mortar, adhesive, etc. may be used to prevent the slurry from leaking from the joint during subsequent grouting;

(4) injecting grouting material from the grouting port, introducing the grouting material into the pore passage, and blocking the grout outlet with the grouting material by using rubber plugs one by one until all the steel bar sleeves are filled with the grouting material to form a grouting concrete layer; after grouting is finished, the surfaces of a grouting opening and a grout outlet are smoothed; so far, the connection between the two combined column sections is completed;

(5) repeating steps (1) to (4) until the desired integrated column is obtained. Different numbers of combined column sections can be connected according to actual construction requirements so as to obtain combined columns with different lengths.

Referring to fig. 3a, a joint 131 between the concrete layers 13 of two adjacent combined column segments 1 is filled with grouting material through the grouting opening 111 to further fix the two concrete layers.

Before the connection construction of the steel bar sleeve 6 and the steel bar 2, the interior of the steel bar sleeve 6 needs to be flushed with water and moistened by a high-pressure water pipe; grouting materials are injected from the grouting openings 111, and then the grouting openings 112 where the grouting materials flow out are blocked one by rubber plugs until all the pore passages of the steel bar sleeve 6 are filled with the grouting materials.

Although the present invention has been described with reference to the present embodiments, it should be understood by those skilled in the art that the above embodiments are only used for illustrating the present invention, and are not used to limit the scope of the present invention. The utility model aims at providing a prefabricated assembled FRP pipe-concrete-steel pipe combination post. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that, although the present invention only provides the above-mentioned prefabricated FRP pipe-concrete-steel pipe combination column, the similar column structure does not depart from the essence of the present invention, and the present invention is within the protection scope of the present invention.

Claims

1. The prefabricated assembled FRP pipe-concrete-steel pipe combination column is characterized in that: comprising at least two combined post segments,

each combined column segment (1) comprises an FRP pipe segment (11) positioned at the outer side, a steel pipe segment (12) positioned in the FRP pipe segment (11), and a concrete layer (13) positioned between the FRP pipe segment (11) and the steel pipe segment (12),

the two steel pipe sections (12) of any two adjacent combined column sections (1) are fixedly connected, and the two concrete layers (13) of the two adjacent combined column sections (1) are fixed through steel bars.

2. The prefabricated assembled FRP pipe-concrete-steel pipe combined column as claimed in claim 1, wherein: and two steel pipe sections (12) of any two adjacent combined column sections (1) are welded and fixed.

3. The prefabricated assembled FRP pipe-concrete-steel pipe combined column as claimed in claim 1, wherein: opposite ends of any two adjacent steel pipe sections (12) are fixedly provided with steel flanges (4), the steel flanges (4) are located on the inner sides of the steel pipe sections (12), and the two adjacent steel pipe sections (12) are matched with the two steel flanges (4) through bolts (5) to realize fixed connection.

4. The prefabricated assembled FRP pipe-concrete-steel pipe combined column as claimed in claim 1, wherein: the inner diameter of each steel tube segment (12) is at least 800 mm.

5. The prefabricated assembled FRP pipe-concrete-steel pipe combined column as claimed in claim 1, wherein: the section of the steel pipe section (12) is any one of circular, oval, square and rectangular, and the section of the FRP pipe section (11) is any one of circular, oval, square and rectangular.

6. The prefabricated assembled FRP pipe-concrete-steel pipe combined column as claimed in claim 1, wherein: also comprises a steel bar sleeve (6), one end of the steel bar sleeve (6) is provided with an internal thread, the other end is provided with a pore canal along the length direction,

the reinforcing bars comprise a first reinforcing bar (21) and a second reinforcing bar (22);

one of any two adjacent two combined column sections (1) is defined as a first combined column section, the other one of the two adjacent two combined column sections is defined as a second combined column section, one end of the first steel bar (21) is in threaded connection with the steel bar sleeve (6), the first steel bar (21) and the steel bar sleeve (6) are both embedded in a concrete layer of the first combined column section, one end of the second steel bar (22) is embedded in a concrete layer of the second combined column section, and the other end of the second steel bar extends outwards and is fixed in a pore channel of the steel bar sleeve (6).

7. The prefabricated assembled FRP pipe-concrete-steel pipe combined column as claimed in claim 6, wherein: a plurality of second steel bars (22) are uniformly arranged in the concrete layer of the second combined column section in the circumferential direction, and a plurality of steel bar sleeves (6) and a plurality of first steel bars (21) are correspondingly arranged in the concrete layer of the first combined column section.

8. The prefabricated assembled FRP pipe-concrete-steel pipe combined column as claimed in claim 7, wherein: and a grouting concrete layer (7) is arranged between the second steel bar (22) and the inner wall of the pore channel.

9. The prefabricated assembled FRP pipe-concrete-steel pipe combined column as claimed in claim 8, wherein: the FRP pipe segment of the first combined column segment is provided with a grouting opening (111) and a grout outlet (112), the grouting opening (111) and the grout outlet (112) are communicated with a pore channel of the steel bar sleeve (6), the grouting opening (111) is close to the second combined column segment, and the grout outlet (112) is close to the other end, far away from the second combined column segment, of the pore channel.

10. The prefabricated assembled FRP pipe-concrete-steel pipe combined column as claimed in claim 9, wherein: and grouting materials (8) are filled at the joint of the two concrete layers (13) of any two adjacent combined column segments (1), and the joint is communicated with the grouting opening (111).