CN102191748A - Shear connector of FRP (Fiber Reinforced Plastic)-concrete composite beam - Google Patents
Shear connector of FRP (Fiber Reinforced Plastic)-concrete composite beam Download PDFInfo
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- CN102191748A CN102191748A CN 201110112241 CN201110112241A CN102191748A CN 102191748 A CN102191748 A CN 102191748A CN 201110112241 CN201110112241 CN 201110112241 CN 201110112241 A CN201110112241 A CN 201110112241A CN 102191748 A CN102191748 A CN 102191748A
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Abstract
The invention discloses a shear connector of an FRP (Fiber Reinforced Plastic)-concrete composite beam. The shear connector comprises a beam body and a concrete bridge floor, wherein the beam body is made of an FRP material, the concrete bridge floor is laid on the beam body, and connectors made of root cotton-shaped FRP fiber yarns are arranged between the beam body and the concrete bridge floor; roots of the root cotton-shaped FRP fiber yarns are arranged in the beam body to form a whole; and the remaining parts of the root cotton-shaped FRP fiber yarns are cast in the concrete bridge floor. In the invention, as the root cotton-shaped FRP fiber yarns are adopted as the shear connector, and the FRP fiber yarns and the beam body are manufactured into a whole, only the problem of interface connection of the FRP fiber yarns and the concrete bridge floor is related, and the overall performance of the shear connector is more superior; meanwhile, as the FRP fiber yarns are produced to be root cotton-shaped, and substantially the powerful fixing function of the structure of a plant root system is taken for a reference, and the shear connector can be used for firmly catching a concrete flange plate, so that the overall cooperation performance of the FRP beam and the concrete flange plate is more superior, and advantages of a combined structure are developed more obviously.
Description
Technical field
The invention belongs to the combining structure field in the civil engineering, be specifically related to shear connector between a kind of combined bridge the inside FRP beam of forming by FRP girder and concrete bridge deck and the concrete slab.
Background technology
The combining structure bridge is that the girder of different materials and bridge deck are combined and carried out co-operation, FRP beam in FRP section bar-concrete combined bridge need make it become as a whole by shear connector with concrete slab, and shear connector will be resisted slippage and start effect.Therefore shear connector is peg, shaped steel etc. in traditional steel concrete composite beam bridge, and the shear connector over-borrowing of existing FRP-concrete combination beam bridge mirror steel-concrete composite beam bridge adopts the FRP section bar, similar and angle steel, channel-section steel etc.Shear connector is in order to make reinforced concrete bridge deck plate and beam co-operation, makes not produce the relative changing of the relative positions between reinforced concrete bridge deck plate and the beam, so the quality of shear connector is directly connected to the size of the supporting capacity of whole combining structure.The interface connected mode of the FRP-concrete combination beam of current main employing has three kinds: resin concrete bar, FRP corrugated sheet and the little i beam of FRP, and shown in Fig. 1,2 and 3.These three kinds of shear connectors in constructional characteristics are: 1. shear connector is provided with along the deck-siding total length; 2. shear connector and FRP member bonding before, need to carry out paraffin removal degrease, polishing roughening and cleaning to bonding plane; 3. exasperate or the brush coating scab that should make uneven or band indentation, burr of the interface that is connected with concrete flange plate of FRP member increases rough; 4. preexisting hole is answered in the end face of FRP corrugated sheet shear connector and side.
Summary of the invention
Goal of the invention: the objective of the invention is to concrete combination beam, a kind of shear connector of simple in structure, easy to process, FRP-concrete combination beam that the shearing resistance tension is effective is provided at FRP-.
Technical scheme: the shear connector of FRP-concrete combination beam of the present invention, comprise FRP material beam body of making and the concrete bridge deck that is layered on the described beam body, be provided with the cotton-shaped FRP fibre of root connector between described beam body and the described concrete bridge deck; The described filametntary root of cotton-shaped FRP is arranged in the described beam body and with it and becomes as a whole; The described filametntary remainder of cotton-shaped FRP is cast in the described concrete bridge deck.The shear connector that the present invention utilizes the cotton-shaped FRP fibre of root to make, opposing starts and the slippage effect, can make the better collaborative work of beam and concrete.
Described cotton-shaped FRP fibre arranges that along the vertically even of described beam body maximum spacing is no more than 500mm.
Described cotton-shaped FRP fibre arranges that along the laterally even of described beam body maximum spacing is no more than 500mm.
The described filametntary fibre diameter of cotton-shaped FRP is 4～6mm.
The described filametntary maximum loop diameter of cotton-shaped FRP is 90～110mm.
The described filametntary height of cotton-shaped FRP is 90～110mm, and is no more than described concrete bridge face thickness half.
The present invention compared with prior art, its beneficial effect is: 1, overall performance of the present invention is more superior, the tradition mode of connecting need be connected as a single entity shear connector by bonding mode, this itself has just related to another one interface connectivity problem, be subjected to the influence of environment and constructing operation bigger, when adopting the cotton-shaped FRP fibre of root as shear connector, FRP fibre and beam body integral manufacturing, thereby only relating to the interface connectivity problem of FRP fibre and concrete bridge deck, overall performance is more superior; Simultaneously, it is cotton-shaped that it is made root, come down to use for reference the powerful fastness function of root system of plant structure, and shear connector clenches concrete flange plate, make that the cooperative overall performance of FRP beam and concrete flange plate is more superior, the advantage performance of combining structure is more obvious; 2, the present invention has given full play to the performance of FRP material, and the tensile strength height of FRP silk adopts bionic mode to make the cotton-shaped shear connector of root it, has given full play to its tensile property, has good practical values and application prospect; 3, economical with materials of the present invention, at present traditional shear connector need be provided with along the deck-siding total length, needs to consume more material, and adopts the cotton-shaped FRP silk of root as shear connector, just arranges in certain zone, has saved material.
Description of drawings
Fig. 1 is that the interface connected mode-resin concrete bar of existing FRP-concrete combination beam connects.
Fig. 2 is that the interface connected mode-FRP corrugated sheet of existing FRP-concrete combination beam connects.
Fig. 3 is that the little i beam of the interface connected mode-FRP of existing FRP-concrete combination beam connects.
Fig. 4 is FRP beam of the present invention and FRP fibre connection diagram.
Fig. 5 is the filametntary structural representation of the cotton-shaped FRP of root of the present invention.
Fig. 6 is the molding structure figure of FRP-concrete combination beam of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, technical solution of the present invention is elaborated, but protection scope of the present invention is not limited to described embodiment.
Embodiment: the shear connector of FRP-concrete combination beam of the present invention, comprise FRP material beam body of making 1 and the concrete bridge deck 2 that is layered on the described beam body 1, be provided with cotton-shaped FRP fibre 3 connectors of root between described beam body 1 and the described concrete bridge deck 2; The root of described cotton-shaped FRP fibre 3 is arranged in the described beam body 1 and with it and becomes as a whole; The remainder of described cotton-shaped FRP fibre 3 is cast in the described concrete bridge deck 2.Design feature of the present invention is: 1, the beam body utilizes the FRP fibrous material to make; 2, shear connector utilizes cotton-shaped FRP fibre of root and beam system to make an integral body; 3, concreting bridge deck are built with the FRP fibre and to be become one, and finally make FRP beam body and concrete flange plate become whole primary structure member.
Described cotton-shaped FRP fibre 3 arranges that along the vertically even of described beam body 1 maximum spacing is no more than 500mm; Described cotton-shaped FRP fibre 3 arranges that along the laterally even of described beam body 1 maximum spacing is no more than 500mm.
The fibre diameter of described cotton-shaped FRP fibre 3 is about 5mm.
The maximum loop diameter of described cotton-shaped FRP fibre 3 is about 100mm.
The height of described cotton-shaped FRP fibre 3 is 90～110mm, and is no more than described concrete bridge deck 2 thickness half.
Present embodiment specifically adopts basalt fibre shear connector and basalt fibre beam, can be good at bringing into play the advantage of basalt fibre: tensile strength height, light weight, good corrosion resistance, antifatigue good impact resistance.After adopting basalt fibre, save material, reduced deadweight, improved the supporting capacity and the endurance quality of composite bridge, had the remarkable economical technical benefits.
As mentioned above, although represented and explained the present invention that with reference to specific preferred embodiment it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite that does not break away from the claims definition, can make various variations in the form and details to it.
Claims (6)
1. the shear connector of a FRP-concrete combination beam, comprise the beam body (1) that the FRP material is made and be layered on concrete bridge deck (2) on the described beam body (1), it is characterized in that: be provided with the cotton-shaped FRP fibre of root (3) connector between described beam body (1) and the described concrete bridge deck (2); The root of described cotton-shaped FRP fibre (3) is arranged in the described beam body (1) and with it and becomes as a whole; The remainder of described cotton-shaped FRP fibre (3) is cast in the described concrete bridge deck (2).
2. the shear connector of FRP-concrete combination beam according to claim 1 is characterized in that: described cotton-shaped FRP fibre (3) evenly arranges vertically that along described beam body (1) maximum spacing is no more than 500mm.
3. the shear connector of FRP-concrete combination beam according to claim 1 is characterized in that: described cotton-shaped FRP fibre (3) evenly arranges laterally that along described beam body (1) maximum spacing is no more than 500mm.
4. the shear connector of FRP-concrete combination beam according to claim 1 is characterized in that: the fibre diameter of described cotton-shaped FRP fibre (3) is 4～6mm.
5. the shear connector of FRP-concrete combination beam according to claim 1 is characterized in that: the maximum loop diameter of described cotton-shaped FRP fibre (3) is 90～110mm.
6. the shear connector of FRP-concrete combination beam according to claim 1 is characterized in that: the height of described cotton-shaped FRP fibre (3) is 90～110mm, and is no more than described concrete bridge deck (2) thickness half.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110112241 CN102191748A (en) | 2011-05-03 | 2011-05-03 | Shear connector of FRP (Fiber Reinforced Plastic)-concrete composite beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110112241 CN102191748A (en) | 2011-05-03 | 2011-05-03 | Shear connector of FRP (Fiber Reinforced Plastic)-concrete composite beam |
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| Publication Number | Publication Date |
|---|---|
| CN102191748A true CN102191748A (en) | 2011-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110112241 Pending CN102191748A (en) | 2011-05-03 | 2011-05-03 | Shear connector of FRP (Fiber Reinforced Plastic)-concrete composite beam |
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| CN (1) | CN102191748A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457182A (en) * | 2018-05-18 | 2018-08-28 | 中山职业技术学院 | A kind of cross bridge floor board and its construction technology |
| CN112012369A (en) * | 2020-09-08 | 2020-12-01 | 哈尔滨工业大学 | Prefabricated light sandwich wallboard |
| CN114607096A (en) * | 2022-02-14 | 2022-06-10 | 香港理工大学深圳研究院 | Combined beam and construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08246596A (en) * | 1995-03-10 | 1996-09-24 | Chiyoda Corp | Supporting structure for floor |
| CN101328753A (en) * | 2008-07-24 | 2008-12-24 | 同济大学 | Fiber reinforcement composite material - concrete combination beam |
| CN101343950A (en) * | 2006-10-24 | 2009-01-14 | 菲尔（香港）有限公司 | Anchoring piece for reinforcing concrete structure, manufacturing method and using method thereof |
| CN101985825A (en) * | 2010-11-20 | 2011-03-16 | 大连理工大学 | Fiber reinforced plastic-concrete composite beam |
| CN202116972U (en) * | 2011-05-03 | 2012-01-18 | 东南大学 | Shear connector of FRP concrete composite beam |
-
2011
- 2011-05-03 CN CN 201110112241 patent/CN102191748A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08246596A (en) * | 1995-03-10 | 1996-09-24 | Chiyoda Corp | Supporting structure for floor |
| CN101343950A (en) * | 2006-10-24 | 2009-01-14 | 菲尔（香港）有限公司 | Anchoring piece for reinforcing concrete structure, manufacturing method and using method thereof |
| CN101328753A (en) * | 2008-07-24 | 2008-12-24 | 同济大学 | Fiber reinforcement composite material - concrete combination beam |
| CN101985825A (en) * | 2010-11-20 | 2011-03-16 | 大连理工大学 | Fiber reinforced plastic-concrete composite beam |
| CN202116972U (en) * | 2011-05-03 | 2012-01-18 | 东南大学 | Shear connector of FRP concrete composite beam |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457182A (en) * | 2018-05-18 | 2018-08-28 | 中山职业技术学院 | A kind of cross bridge floor board and its construction technology |
| CN108457182B (en) * | 2018-05-18 | 2024-04-30 | 中山职业技术学院 | Orthotropic bridge deck and construction process thereof |
| CN112012369A (en) * | 2020-09-08 | 2020-12-01 | 哈尔滨工业大学 | Prefabricated light sandwich wallboard |
| CN112012369B (en) * | 2020-09-08 | 2021-11-23 | 哈尔滨工业大学 | Prefabricated light sandwich wallboard |
| CN114607096A (en) * | 2022-02-14 | 2022-06-10 | 香港理工大学深圳研究院 | Combined beam and construction method |
| CN114607096B (en) * | 2022-02-14 | 2024-03-12 | 香港理工大学深圳研究院 | Composite beam and construction method |
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Application publication date: 20110921 |