CN111794439A - Novel I-shaped CFRP-concrete combination column - Google Patents
Novel I-shaped CFRP-concrete combination column Download PDFInfo
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- CN111794439A CN111794439A CN202010667940.1A CN202010667940A CN111794439A CN 111794439 A CN111794439 A CN 111794439A CN 202010667940 A CN202010667940 A CN 202010667940A CN 111794439 A CN111794439 A CN 111794439A
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- cfrp
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- plate
- column
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
Abstract
The invention discloses a novel I-shaped CFRP-concrete combined column which comprises an I-shaped CFRP, wherein a CFRP shearing-resistant connecting piece is fixed on the side surface of the I-shaped CFRP, a longitudinal steel bar is arranged on the outer side of the I-shaped CFRP, the longitudinal steel bar is fixedly connected through a stirrup, and the longitudinal steel bar and the I-shaped CFRP are fixed through a snap ring and poured concrete; the combined column has simple structure and easy construction; the built-in I-shaped CFRP is adopted in the combined column, so that the bearing capacity is increased, the section size can be reduced, and the use of concrete is reduced; the combination column can further improve the performance of the combination column, improves the bearing performance of a building, and has strong practicability and strong popularization.
Description
Technical Field
The invention relates to the technical field of building structures, in particular to a novel I-shaped CFRP-concrete combined column.
Background
Along with the industrialization process, the concrete is used as a common engineering building material; the bearing capacity of the traditional reinforced concrete column structure is generally poor, and when the bearing capacity is increased, the self weight of the traditional reinforced concrete column structure is also increased, so that the engineering structure is greatly limited.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a novel concrete combined column.
In order to realize the technical scheme of the invention, the novel I-shaped CFRP-concrete combined column is designed, and comprises an I-shaped CFRP3, a CFRP shear connector 8 is fixed on the side surface of the I-shaped CFRP3, a longitudinal steel bar 2 is arranged on the outer side of the I-shaped CFRP3, the longitudinal steel bar 2 is fixedly connected through a stirrup 9, and the longitudinal steel bar 2 and the I-shaped CFRP3 are fixed with concrete 4 through a snap ring 10.
Preferably, the CFRP shear connector 8 is any one of a CFRP perforated plate 6, a CFRP-T-shaped plate 7 and a CFRP stud 5.
Preferably, the CFRP perforated plate 6 comprises a rectangular plate 31, the side edges of the rectangular plate 31 are fixed on both sides of the i-shaped CFRP3, and the rectangular plate 31 is provided with a through hole 32.
Preferably, the CFRP-T type plate 7 comprises a transverse plate 41 and a longitudinal plate 42, the longitudinal plate 42 is fixed on the transverse plate 41 to form a T shape, and the side edges of the T shape are fixed on both sides of the i-shaped CFRP 3.
Preferably, one end of the CFRP peg 5 is fixed on both sides of the I-shaped CFRP 3.
Preferably, the i-shaped CFRP3 is integrated with the CFRP shear connector 8.
Preferably, the stirrups 9 surround the outer sides of the longitudinal steel bars 2 and are fixedly connected through binding; one end of the snap ring 10 is clamped on the I-shaped CFRP3, and the other end of the snap ring is clamped on the longitudinal steel bar 2.
Preferably, the assembling method of the novel concrete combined column comprises the following steps:
the method comprises the following steps: determining the grade and size of concrete 4, the size of I-shaped CFRP3 and the type and number of CFRP shear connectors 8 according to the designed bearing capacity, size and construction requirements of the upright column, and suggesting that the sectional area of CFRP accounts for 4% -10% of the concrete column;
step two: machining an I-shaped CFRP3 containing the CFRP shear connector 8;
step three: binding and fixing the longitudinal steel bar 2 and the stirrup 9, clamping one end of a snap ring 10 at other positions on the I-shaped CFRP3 except the CFRP shearing-resistant connector 8, and clamping the other end of the snap ring on the longitudinal steel bar 2;
step four: and (4) pouring concrete.
Compared with the prior art, the invention has the beneficial effects that:
1. the combined column has simple structure and easy construction;
2. the combined column adopts the built-in I-shaped CFRP, increases the bearing capacity, can reduce the section size and reduce the use of concrete, and has a section of 300 x 300mm2C40 concrete of (1), whichThe ultimate bearing capacity is 3000kN, an I-shaped CFRP is arranged in the bearing, the ultimate bearing capacity is 4800kN, and the ultimate bearing capacity is improved by 60%;
3. the combined column can further improve the performance of the combined column and the bearing performance of a building, and has strong practicability and strong popularization;
drawings
FIG. 1 is a top view of a concrete composite post according to the present invention;
FIG. 2 is a schematic three-dimensional structure of a concrete composite column according to the present invention;
FIG. 3 is a schematic structural view of a CFRP apertured plate-I-shaped CFRP;
FIG. 4 is a schematic view of a CFRP stud-I-shaped CFRP structure;
FIG. 5 is a schematic structural view of a CFRP-T-shaped plate-I-shaped CFR;
FIG. 6 is a schematic view of a combination structure of an I-shaped CFRP and a steel bar;
wherein: 1-combined column, 2-longitudinal steel bar, 3-I-shaped CFRP, 4-concrete, 5-CFRP stud, 6-CFRP perforated plate, 7-CFRP-T-shaped plate, 8-CFRP shear connector, 9-stirrup, 10-snap ring, 31-rectangular plate, 32-through hole, 41-transverse plate and 42-longitudinal plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, the novel i-shaped CFRP-concrete combined column comprises an i-shaped CFRP3, a CFRP shear connector 8 is fixed on the side surface of the i-shaped CFRP3, a longitudinal steel bar 2 is arranged on the outer side of the i-shaped CFRP3, the longitudinal steel bar 2 is fixedly connected through a stirrup 9, and the longitudinal steel bar 2 and the i-shaped CFRP3 are fixed with concrete 4 through a snap ring 10.
Preferably, the CFRP shear connector 8 is any one of a CFRP perforated plate 6, a CFRP-T-shaped plate 7 and a CFRP stud 5.
Preferably, the CFRP perforated plate 6 comprises a rectangular plate 31, the side edges of the rectangular plate 31 are fixed on both sides of the i-shaped CFRP3, and the rectangular plate 31 is provided with a through hole 32.
Preferably, the CFRP-T type plate 7 comprises a transverse plate 41 and a longitudinal plate 42, the longitudinal plate 42 is fixed on the transverse plate 41 to form a T shape, and the side edges of the T shape are fixed on both sides of the i-shaped CFRP 3.
Preferably, one end of the CFRP peg 5 is fixed on both sides of the I-shaped CFRP 3.
Preferably, the i-shaped CFRP3 is integrated with the CFRP shear connector 8.
Preferably, the stirrups 9 surround the outer sides of the longitudinal steel bars 2 and are fixedly connected through binding; one end of the snap ring 10 is clamped on the I-shaped CFRP3, and the other end of the snap ring is clamped on the longitudinal steel bar 2.
Preferably, the assembling method of the novel concrete combined column comprises the following steps:
the method comprises the following steps: determining the grade and size of concrete 4, the size of I-shaped CFRP3 and the type and number of CFRP shear connectors 8 according to the designed bearing capacity, size and construction requirements of the upright column, and suggesting that the sectional area of CFRP accounts for 4% -10% of the concrete column;
step two: machining an I-shaped CFRP3 containing the CFRP shear connector 8;
step three: as shown in fig. 6, the longitudinal steel bar 2 and the stirrup 9 are bound and fixed, one end of the snap ring 10 is clamped on the i-shaped CFRP3 except other positions of the CFRP shear connector 8, and the other end is clamped on the longitudinal steel bar 2;
step four: and (4) pouring concrete.
Example 1
A novel I-shaped CFRP-concrete combined column comprises an I-shaped CFRP3, a CFRP shear connector 8 is fixed on the side face of the I-shaped CFRP3, a longitudinal steel bar 2 is arranged on the outer side of the I-shaped CFRP3, the longitudinal steel bar 2 is fixedly connected through a stirrup 9, and the longitudinal steel bar 2 and the I-shaped CFRP3 are fixed with concrete 4 through a snap ring 10.
Preferably, the CFRP shear connector 8 is a CFRP perforated plate 6.
Preferably, as shown in fig. 3, the CFRP perforated plate 6 includes a rectangular plate 31, the side edges of the rectangular plate 31 are fixed to both sides of the i-shaped CFRP3, and the rectangular plate 31 is provided with through holes 32.
Preferably, the i-shaped CFRP3 is integrated with the CFRP shear connector 8.
Preferably, the stirrups 9 surround the outer sides of the longitudinal steel bars 2 and are fixedly connected through binding; one end of the snap ring 10 is clamped on the I-shaped CFRP3, and the other end of the snap ring is clamped on the longitudinal steel bar 2.
Preferably, the assembling method of the novel concrete combined column comprises the following steps:
the method comprises the following steps: determining the grade and size of concrete 4, the size of I-shaped CFRP3 and the number of CFRP perforated plates 6 according to the designed bearing capacity, size and construction requirement of the upright column, and suggesting that the section area of CFRP accounts for 4-10% of the concrete column;
step two: processing an I-shaped CFRP3 containing the CFRP open pore plate 6;
step three: binding and fixing the longitudinal steel bar 2 and the stirrup 9, clamping one end of a snap ring 10 on the I-shaped CFRP3 except other positions of the CFRP perforated plate 6, and clamping the other end of the snap ring on the longitudinal steel bar 2;
step four: pouring concrete 4
Example 2
A novel I-shaped CFRP-concrete combined column comprises an I-shaped CFRP3, a CFRP shear connector 8 is fixed on the side face of the I-shaped CFRP3, a longitudinal steel bar 2 is arranged on the outer side of the I-shaped CFRP3, the longitudinal steel bar 2 is fixedly connected through a stirrup 9, and the longitudinal steel bar 2 and the I-shaped CFRP3 are fixed with concrete 4 through a snap ring 10.
Preferably, the CFRP shear connector 8 is a CFRP peg 5.
Preferably, as shown in fig. 4, one end of the CFRP pin 5 is fixed to both sides of the i-shaped CFRP 3.
Preferably, the i-shaped CFRP3 is integrated with the CFRP shear connector 8.
Preferably, the stirrups 9 surround the outer sides of the longitudinal steel bars 2 and are fixedly connected through binding; one end of the snap ring 10 is clamped on the I-shaped CFRP3, and the other end of the snap ring is clamped on the longitudinal steel bar 2.
Preferably, the assembling method of the novel concrete combined column comprises the following steps:
the method comprises the following steps: determining the grade and the size of concrete 4 and the number of CFRP studs 5 with the size of I-shaped CFRP3 according to the designed bearing capacity, the size and the construction requirement of the upright column, and suggesting that the section area of the CFRP accounts for 4-10% of the concrete column;
step two: processing an I-shaped CFRP3 containing CFRP studs 5;
step three: binding and fixing the longitudinal steel bar 2 and the stirrup 9, clamping one end of a snap ring 10 at other positions on the I-shaped CFRP3 except the CFRP stud 5, and clamping the other end of the snap ring on the longitudinal steel bar 2;
step four: and (4) pouring concrete.
Example 3
A novel I-shaped CFRP-concrete combined column comprises an I-shaped CFRP3, a CFRP shear connector 8 is fixed on the side face of the I-shaped CFRP3, a longitudinal steel bar 2 is arranged on the outer side of the I-shaped CFRP3, the longitudinal steel bar 2 is fixedly connected through a stirrup 9, and the longitudinal steel bar 2 and the I-shaped CFRP3 are fixed with concrete 4 through a snap ring 10.
Preferably, the CFRP shear connector 8 is a CFRP-T type plate 7.
Preferably, as shown in fig. 5, the CFRP-T-shaped plate 7 includes a transverse plate 41 and a longitudinal plate 42, the longitudinal plate 42 is fixed on the transverse plate 41 to form a T-shape, and the T-shaped side edges are fixed on both sides of the i-shaped CFRP 3.
Preferably, the i-shaped CFRP3 is integrated with the CFRP shear connector 8.
Preferably, the stirrups 9 surround the outer sides of the longitudinal steel bars 2 and are fixedly connected through binding; one end of the snap ring 10 is clamped on the I-shaped CFRP3, and the other end of the snap ring is clamped on the longitudinal steel bar 2.
Preferably, the assembling method of the novel concrete combined column comprises the following steps:
the method comprises the following steps: determining the grade and size of concrete 4, the size of I-shaped CFRP3 and the number of CFRP-T-shaped plates 7 according to the designed bearing capacity, size and construction requirement of the upright column, and suggesting that the section area of CFRP accounts for 4-10% of the concrete column;
step two: processing an I-shaped CFRP3 containing the CFRP-T type plate 7;
step three: binding and fixing the longitudinal steel bar 2 and the stirrup 9, clamping one end of a snap ring 10 on the I-shaped CFRP3 except other positions of the CFRP-T-shaped plate 7, and clamping the other end of the snap ring on the longitudinal steel bar 2;
step four: and (4) pouring concrete.
Example 4
Taking C40 concrete as an example, the concrete is 300 × 1000mm2Comparing a concrete column with an I-shaped CFRP-concrete combined column:
Claims (8)
1. the utility model provides a novel I shape CFRP-concrete combination post, its characterized in that, includes I shape CFRP (3), I shape CFRP (3) side is fixed with CFRP shear connector (8), and the outside of I shape CFRP (3) is equipped with longitudinal reinforcement (2), and longitudinal reinforcement (2) are through stirrup (9) fixed connection, and longitudinal reinforcement (2) are fixed with I shape CFRP (3) through snap ring (10) and concrete (4).
2. The concrete combined column as claimed in claim 1, wherein the CFRP shear connector (8) is any one of a CFRP open-cell plate (6), a CFRP-T-shaped plate (7) and a CFRP stud (5).
3. The concrete combined column as claimed in claim 2, wherein the CFRP apertured plate (6) comprises a rectangular plate (31), the side edges of the rectangular plate (31) are fixed on both sides of the I-shaped CFRP (3), and the rectangular plate (31) is provided with through holes (32).
4. The novel concrete combined column as claimed in claim 2, wherein the CFRP-T-shaped plate (7) comprises a transverse plate (41) and a longitudinal plate (42), the longitudinal plate (42) is fixed on the transverse plate (41) to form a T shape, and the T-shaped side edges are fixed on two sides of the I-shaped CFRP (3).
5. The concrete composite post as claimed in claim 2, wherein one end of the CFRP stud (5) is fixed on both sides of the I-shaped CFRP (3).
6. A new concrete composite post according to claim 1, characterized in that the i-shaped CFRP (3) is integrated with CFRP shear connectors (8).
7. The novel concrete combined column is characterized in that the stirrups (9) are wound on the outer sides of the longitudinal steel bars (2) and fixedly connected through binding; one end of the snap ring (10) is clamped on the I-shaped CFRP (3), and the other end of the snap ring is clamped on the longitudinal steel bar (2).
8. The novel concrete composite column as claimed in any one of claims 1 to 8, wherein the assembling method of the novel concrete composite column comprises:
the method comprises the following steps: determining the grade and the size of concrete (4), the size of I-shaped CFRP (3) and the type and the number of CFRP shear connectors (8) according to the designed bearing capacity, the size and the construction requirement of the upright column, and suggesting that the section area of the CFRP accounts for 4 to 10 percent of the concrete column;
step two: processing an I-shaped CFRP (3) containing the CFRP shear connector (8);
step three: binding and fixing the longitudinal steel bar (2) and the stirrup (9), clamping one end of a clamping ring (10) at other positions on the I-shaped CFRP (3) except the CFRP shear connector (8), and clamping the other end of the clamping ring on the longitudinal steel bar (2);
step four: and (4) pouring concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010667940.1A CN111794439A (en) | 2020-07-13 | 2020-07-13 | Novel I-shaped CFRP-concrete combination column |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010667940.1A CN111794439A (en) | 2020-07-13 | 2020-07-13 | Novel I-shaped CFRP-concrete combination column |
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| CN111794439A true CN111794439A (en) | 2020-10-20 |
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2020
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Application publication date: 20201020 |