CN106760190A - Concrete simply supported beam and preparation method based on carbon fiber mesh composite board - Google Patents
Concrete simply supported beam and preparation method based on carbon fiber mesh composite board Download PDFInfo
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- CN106760190A CN106760190A CN201611033092.9A CN201611033092A CN106760190A CN 106760190 A CN106760190 A CN 106760190A CN 201611033092 A CN201611033092 A CN 201611033092A CN 106760190 A CN106760190 A CN 106760190A
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- Prior art keywords
- plate
- carbon fiber
- concrete
- composite board
- side plate
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
Abstract
The invention discloses a kind of concrete simply supported beam based on carbon fiber mesh composite board and preparation method, belong to structural engineering technical field.The component includes side plate, base plate, end plate, U-shaped stirrup and concrete, and described side plate, base plate are carbon fiber mesh composite board, and end plate is ordinary cement sheet material.Side plate is connected with base plate using U-shaped stirrup, and end plate is located at the end in the trench structure that side plate is constituted with base plate, and clamps side plate in end using G types fixture.Side plate and pre-buried shear connector in base plate, to increase the cohesive force of concrete and carbon fiber mesh composite board.The casting concrete in side plate, base plate, the space in end plate besieged city, conserves to concrete, forms simple flexural member.The component have exempt from template, from heavy and light, good endurance, globality is strong, simple advantage of constructing.
Description
Technical field
The present invention relates to simply supported beam in building structure and preparation method thereof, it is related specifically to a kind of multiple based on carbon fiber mesh
The concrete simply supported beam and preparation method of plywood material.
Background technology
Reinforced concrete structure is to use extensive structure, but this structure to exist in the engineerings such as Contemporary Architecture, bridge, water conservancy
There is a problem of durability during use.As Carbon Dioxide in Air is to the carbonization of concrete, concrete is in it
The protective effect of portion's steel is gradually lost, after concrete carbonization around reinforcing bar, reinforcing bar can gradually corrosion, expansion, enter
One step causes steel bar mechanics performance to degenerate, concrete section performance is damaged, the adhesive property between reinforcing bar and concrete declines etc.
Consequence, so as to reduce the bearing capacity of component, directly influences the safety of structure.With the development of carbon fibre material, particularly
Carbon fiber is gradually applied to architectural engineering, and the advantage that this material is protruded is high specific strength and corrosion resistance.Carbon fiber increases
The intensity of strong composite is typically at least 2 times of steel, even up to 10 times, and its weight is only the 20% of steel.At present,
Certain problem is there is also during with carbon fibre reinforced composite reinforced concrete structure, on the one hand this material is needed by having
Machine glue is bonded in structure top layer, thus fire resistance and resistance to elevated temperatures are poor；On the other hand, using carbon fiber reinforced plastic
The bed of material is susceptible to stripping damage, it is impossible to give full play to the bearing capacity of carbon fibre material.
The content of the invention
The technical problems to be solved by the invention be to provide it is a kind of exempt from template, with good durability and globality and
The concrete simply supported beam based on carbon fiber mesh composite board and preparation method of building bearing capacity can be greatly improved.
In order to solve the above technical problems, the technical scheme is that：
1. a kind of concrete simply supported beam based on carbon fiber mesh composite board, including side plate, base plate, end plate, U-shaped stirrup
And concrete, side plate is located on base plate, and side plate is connected with base plate using U-shaped stirrup；End plate is located at side plate and base plate structure
Into trench structure in end；The casting concrete in side plate, base plate, the space in end plate besieged city, it is shown in Figure 1.
2. side plate and base plate are carbon fiber mesh composite board, and end plate is ordinary cement sheet material.
3.U shaped steel hoop is made using band steel, and is provided with Long Circle bolt hole in the side and base of u tie, and in U-shaped steel
Hoop bottom surface and the support of side junction plus side, it is shown in Figure 4.
4. the concrete strength of connecting lateral plate, base plate and end plate is than making the cement that carbon fiber mesh composite board is used
A base mortar strength grade high.
5. the pre-buried shear connector in the side of side plate and base plate, preferably, shear connector should be along plate width
1/4 to 3/4 place is uniformly arranged, and length direction along plate is uniformly arranged, referring to Fig. 2 and Fig. 3.
6. the pre-embedded bolt bar of the side of side plate and base plate, preferably, shank of bolt should be along plate axis long every 500mm
Pre-buried one, referring to Fig. 2 and Fig. 3.
7. preferably, end plate clamps side plate to be fixed by G types fixture in end, referring to Fig. 1.
8. after side plate, base plate and end plate position are fixed, should in plate face uniform application interfacial agents, then cast-in-place concrete.
Compared with existing concrete flexural member, the present invention achieves following technique effect：
1. the present invention replaces reinforcing bar with carbon fibre reinforced composite, can not only eliminate because steel bar corrosion causes component load-bearing
The problem of power reduction, and component quality can be mitigated, improve element bearing capacity.
2. the present invention is in carbon fiber mesh composite board interpolation shear connector, so as to effectively solve concrete and carbon fiber
Connectivity problem between grid composite plate, prevents stripping damage, and composite board can protect carbon fiber therein to increase
Strong composite, improves fire resistance and heat-resisting quantity, it is ensured that the bearing capacity of carbon fiber mesh composite board can give full play to.
3. the present invention is coupled together base plate and side plate by U-shaped stirrup, eliminates the template during casting concrete
Use, simplify work progress, improve efficiency of construction.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of simply supported beam in the present invention.
Accompanying drawing 2 is carbon fiber mesh composite board (vertical view) structural representation in the present invention.
Accompanying drawing 3 is carbon fiber mesh composite board (facing) structural representation in the present invention.
Accompanying drawing 4 is the structural representation of U-shaped stirrup in the present invention.
Accompanying drawing 5 is the partial enlarged drawing that shank of bolt passes through nut coupling part with U-shaped stirrup in the present invention.
In figure：1-side plate, 2-base plate, 3-end plate, 4-U-shaped stirrup, 5-concrete, 6-shear connector, 7-spiral shell
Tightening latch, 8-G type fixtures.
Specific embodiment
Below in conjunction with the accompanying drawings, technical scheme is described in further detail.
1. mould is accurately laid flat；
2. multilayer carbon fiber mesh fabric is placed on mould, and between bottom grid cloth and plate bottom, each layer grid cloth,
The positioning strip of specific thicknesses is put at top layer grid cloth；
3. prestressing force is applied to carbon fiber mesh fabric by tensioning equipment；
4. the chopped steel carbon fiber of shearing resistance is inserted in the hole of each layer carbon fiber mesh fabric；
5. steel carbon fiber reinforced cement matrix is prepared, and is cast on top layer carbon fiber mesh fabric, fully vibrating makes
Between its hole for infiltrating through plate bottom and each layer carbon cloth；
The cement-based mortar on plate top is floating 6., make its thickness consistent with plate top positioning strip；
7. before steel carbon fiber reinforced cement base mortar condensation at the top of composite board, along plate axis long at the top of composite board
Every the pre-buried shank of bolt of 500mm at line；
8. before steel carbon fiber reinforced cement matrix condensation at the top of composite board, along the 1/ of composite board top width direction
4 to 3/4 places, and uniformly insert shear connector (6) along plate length direction；
9. fixing bolt bar (7) and shear connector (6) are until top cement matrix condenses hardening；
10. prestressing force, form removal are discharged after cement matrix compression strength reaches the 70% of standard value, and suitably supported
Shield；
11. make three blocks of carbon fiber mesh composite boards of equivalent specifications by above step；
12. prefabricated U-shaped stirrups (4), and open up Long Circle bolt hole near point midway in the side and bottom surface of stirrup；
One block of good composite board of maintenance is placed in ground grading by 13., is placed respectively in its reserved shank of bolt (7) position
U-shaped stirrup (4), makes shank of bolt (7) be fixed through Long Circle bolt hole, and nut；
14. both sides that the other two blocks good composite boards of maintenance are placed in U-shaped stirrup (4), are placed in answering for bottom
On plywood material, pre-embedded bolt bar (7) is fixed through Long Circle bolt hole, and nut, be integrally formed one
Individual trench structure；
15. prepare ordinary cement matrix, and by two blocks of ordinary cement sheet materials of Mold Making, and conserved；
16. two blocks of good ordinary cement sheet materials of maintenance are respectively placed in the end in trench structure, and by G type fixtures
(8) sheet material of trench structure both sides is clamped in end, to fix two blocks of ordinary cement sheet materials；
17. smear interfacial agents inside whole trench structure；
18. pour the good concrete of match ratio (5), and are suitably conserved；
19. just can obtain simply supported beam after concrete (5) reaches age.
Claims (7)
1. a kind of concrete simply supported beam based on carbon fiber mesh composite board, including side plate (1), base plate (2), end plate (3), U
Shaped steel hoop (4) and concrete (5), it is characterised in that the side plate (1) is on base plate (2), and side plate (1) and base plate
(2) using U-shaped stirrup (4) connection；End of the end plate (3) in the trench structure that side plate (1) and base plate (2) are constituted；
The casting concrete (5) in side plate (1), base plate (2), the space in end plate (3) besieged city.
2. the concrete simply supported beam based on carbon fiber mesh composite board according to claim 1, it is characterised in that described
Side plate (1) and base plate (2) are carbon fiber mesh composite board, and the end plate (3) is ordinary cement sheet material.
3. the concrete simply supported beam based on carbon fiber mesh composite board according to claim 1, it is characterised in that described
U-shaped stirrup (4) is made using band steel, and is provided with Long Circle bolt hole in the side and base of u tie (4), and at U-shaped stirrup bottom
Face and the ribbing of side junction.
4. the concrete simply supported beam based on carbon fiber mesh composite board according to claim 1, it is characterised in that connection
Concrete (5) strength ratio of side plate (1), base plate (2) and end plate (3) makes the cement base that carbon fiber mesh composite board is used
A mortar strength grade high.
5. the preparation method that the concrete simply supported beam based on carbon fiber mesh composite board according to claim 1 is used,
Characterized in that, the pre-buried shear connector in the side (6) of the side plate (1) and base plate (2)；The side plate (1) and base plate (2)
The pre-embedded bolt bar (7) of side；The u tie is fixed with the shank of bolt (7) on side plate (1) and base plate (2) using nut；It is described
End plate (3) clamps side plate (1) to be fixed by G types fixture (8) in end；The side plate (1), base plate (2) and end plate (3)
After position is fixed, should in plate face uniform application interfacial agents, then cast-in-place concrete (5).
6. the preparation method of the concrete simply supported beam based on carbon fiber mesh composite board according to claim 5, it is special
Levy and be, the shear connector (6) should be uniformly arranged along 1/4 to 3/4 place of plate width, and equal along the length direction of plate
Even setting.
7. the preparation method of the concrete simply supported beam based on carbon fiber mesh composite board according to claim 5, it is special
Levy and be, the shank of bolt (7) should be along plate axis long pre-buried one every 500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611033092.9A CN106760190A (en) | 2016-11-18 | 2016-11-18 | Concrete simply supported beam and preparation method based on carbon fiber mesh composite board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611033092.9A CN106760190A (en) | 2016-11-18 | 2016-11-18 | Concrete simply supported beam and preparation method based on carbon fiber mesh composite board |
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| CN106760190A true CN106760190A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611033092.9A Pending CN106760190A (en) | 2016-11-18 | 2016-11-18 | Concrete simply supported beam and preparation method based on carbon fiber mesh composite board |
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| CN (1) | CN106760190A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186778A (en) * | 2019-06-12 | 2019-08-30 | 卡本科技集团股份有限公司 | A kind of method for testing and detecting of carbon fiber mesh reinforced concrete beam |
| CN113981991A (en) * | 2021-12-27 | 2022-01-28 | 索泰克(北京)岩土科技有限公司 | Shaped steel core column and supporting construction thereof |
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| CN103938797A (en) * | 2014-04-04 | 2014-07-23 | 北京工业大学 | Heat-preserving recycled concrete rectangular column with dismantling-free high performance cement mortar mold plate and manufacturing method |
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| CN105369981A (en) * | 2015-11-27 | 2016-03-02 | 浙江大学 | Reinforcement-type permanent beam form with embedded buckle connection, concrete structural element and manufacture method thereof |
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Patent Citations (14)
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| GB794513A (en) * | 1955-05-03 | 1958-05-07 | Frank Edmund Williams | Improvements in or relating to structures, buildings and the like |
| CN2214975Y (en) * | 1994-06-08 | 1995-12-13 | 简永隆 | Cast-in-place partition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186778A (en) * | 2019-06-12 | 2019-08-30 | 卡本科技集团股份有限公司 | A kind of method for testing and detecting of carbon fiber mesh reinforced concrete beam |
| CN113981991A (en) * | 2021-12-27 | 2022-01-28 | 索泰克(北京)岩土科技有限公司 | Shaped steel core column and supporting construction thereof |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
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| RJ01 | Rejection of invention patent application after publication |