CN203514637U - FRP (fiber reinforced Plastic), wood and reinforced concrete composite beam - Google Patents
FRP (fiber reinforced Plastic), wood and reinforced concrete composite beam Download PDFInfo
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- CN203514637U CN203514637U CN201320631565.0U CN201320631565U CN203514637U CN 203514637 U CN203514637 U CN 203514637U CN 201320631565 U CN201320631565 U CN 201320631565U CN 203514637 U CN203514637 U CN 203514637U
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- 239000002023 wood Substances 0.000 title claims abstract description 29
- 239000002131 composite material Substances 0.000 title abstract description 7
- 239000011150 reinforced concrete Substances 0.000 title abstract description 7
- 229920002430 Fibre-reinforced plastic Polymers 0.000 title description 4
- 239000011151 fibre-reinforced plastic Substances 0.000 title description 4
- 239000004744 fabric Substances 0.000 claims abstract description 18
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 15
- 239000004567 concrete Substances 0.000 claims description 55
- 229910000831 Steel Inorganic materials 0.000 claims description 48
- 239000010959 steel Substances 0.000 claims description 48
- 150000001875 compounds Chemical class 0.000 claims description 19
- 210000003205 muscle Anatomy 0.000 claims description 15
- 238000005452 bending Methods 0.000 claims description 11
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- 238000004873 anchoring Methods 0.000 claims description 3
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Abstract
The utility model discloses a FRP, wood and reinforced concrete composite beam, including reinforced concrete pterygoid lamina, shear force connecting piece, wooden beam, FRP reinforcement, FRP cloth, reinforcing bar, U-shaped stirrup, be provided with shear force connecting piece between reinforced concrete pterygoid lamina and the wooden beam, bottom or well lower part cross-section of wooden beam in and the side is provided with the FRP reinforcement, the pure curved district of composite beam adopts FRP cloth horizontal winding to consolidate, the FRP reinforcement in the curved district of cutting of composite beam adopts the U-shaped stirrup to anchor. The utility model discloses the material that makes the combination each can to the utmost, and collaborative work has improved the section moment of inertia of wood-reinforced concrete combination beam by a wide margin to effectively improved intensity, the rigidity of former component, had advantages such as the dead weight is light, the atress performance is good, low energy consumption, can regenerate, but wide application in the reinforcement and the modern wood structure field of ancient building.
Description
Technical field
The utility model relates to civil engineering new structure technical field, is specifically related to a kind of FRP, wood and Combination beam of steel and concrete.
Background technology
FRP reinforces wood-Combination beam of steel and concrete and there is not yet at home relevant report, and abroad in the starting stage.Current, emphasize to build a harmonious society, develop under the overall background of sustainable circular form economy, the new builing structure material of environmental protection, ecology, low-carbon (LC) is the inevitable direction of following civil engineering development.Traditional establish that diagonal brace reinforcing joint, filleting add hoop, steel bonding (aluminium) is reinforced in the reinforcement means such as timber compoment, the main shortcoming such as destroy original appearance, additional mass is large, metalwork is perishable, Yield Strength of Metals is lower that exists.
In addition, Nanjing Forestry University has proposed a kind of FRP-bamboo-concrete combination beam that the patent No. is 201020530480.X, and this compound beam is the combination of FRP, bamboo beam and concrete flange plate.Bamboo wood has good elasticity and toughness, so the deformability of bamboo wood is strong, but this will reduce span ability, bending rigidity and the stress performance of beam greatly.In addition, bamboo wood is inconsistent in same direction stress performance performance, especially the processing of ring point is not all had to good technology both at home and abroad.Beam is as flexural member in architectural structure system, and rigidity and stress performance must meet the requirements such as the rigidity of structure, bearing capacity.Timber is as low, renewable, the labile natural building material of processing and manufacturing energy consumption, be subject to people's attention, but for engineering structures, timber compoment is still subject to the constraint of himself characteristic, in span, form of structure and moulding performance, be all restricted.Yet the engineered wood that small dimension wood, fast-growing woods resource generate can make up the deficiency of wooden construction itself, making full use of wood performance makes it aspect Form and function two, reach unified, and can solve large footpath material and fall sharply and cause and can be directly used in the fewer and feweri contradiction with timber resources demand of the timber resources of building, in engineering, widely applied.
Fibre reinforced composites (fiber reinforced polymer/plastic is called for short FRP) are to mix by a certain percentage and pass through by fibrous material and matrix material the high-performance novel material that certain technique is compounded to form.After the sixties in last century, fibre reinforced composites (FRP) receive publicity in wooden construction field, and have carried out some research work; To the nineties in last century, for FRP, reinforce or the research that strengthens wooden construction increases gradually, and obtained more application, FRP is for reinforcing wood beam at present.FRP reinforcing wood beam has following feature performance benefit: higher intensity, rigidity and ductile performance, and therefore while destroying, intensity is high and have a comparatively manifest signs; Can reduce the creep of member under load long term; Strength variability is lower, has therefore improved its design load; Can reduce the size impact of member; Can utilize path low-quality timber and improve building efficiency, reduce member dead weight, reduce scantling.
As shown in Figure 1; wood-Combination beam of steel and concrete is by using shear connector that wooden frame and steel concrete wing plate are linked to be to integral body and common stressed combined member; this combined member make combination material each doing his best; collaborative work; wood-Combination beam of steel and concrete strength and stiffness have greatly been improved; wood-Combination beam of steel and concrete anti-seismic performance and fire resistance property have been strengthened; can also improve the sound insulation value of wooden frame structure; simultaneously again can be cost-saving; the economic benefit that develops skill, protection of the environment.Wood-reinforced concrete composite structure can be used for reparation and the reinforcement of wood building in ancient times, also can be used for new building, also can be used for bridge deck system.
Because timber has the shortcomings such as creep is large, modulus of elasticity is low, easy affected by environment.Steel concrete wing plate in wood-Combination beam of steel and concrete and load long term are on wooden frame time, and the defect of timber is exaggerated, and causes the stresses re-distribution of steel concrete wing plate and wooden frame, has reduced the stress performance of wood-Combination beam of steel and concrete.In addition,, according to wooden construction design manual, it is 0.75 for the intensity effect coefficient of flexural member that random, the natural defect of timber is added up the timber natural defect that draws.The good result obtaining according to the material reinforced wooden frame of FRP, the utility model is introduced FRP material in the reinforcing of engineered wood-concrete combination beam.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of FRP, wood and Combination beam of steel and concrete are provided, make combination material each doing his best, collaborative work, improved significantly the second moment of area of wood-Combination beam of steel and concrete, thereby effectively improved the rigidity of former member, there is, low power consuming good from heavy and light, stress performance, the advantage such as renewable, can be widely used in reinforcing and the modern wood structure field of ancient building.
The technical solution adopted in the utility model is: a kind of FRP, wood and Combination beam of steel and concrete, comprise steel concrete wing plate, wooden frame, shear connector, FRP girth member, FRP cloth, u tie muscle, between described steel concrete wing plate and wooden frame, be provided with shear connector, the bottom of described wooden frame or Nei Ji side, cross section, middle and lower part are provided with FRP girth member, described compound beam simple bending district adopts FRP cloth to be laterally wound around reinforcing, and the FRP girth member in described compound beam curved scissors district adopts u tie muscle to carry out anchoring.
As preferably, described timber adopts log or engineered wood.
As preferably, described shear connector adopts bolt or FRP muscle.
As preferably, described FRP girth member is FRP muscle, FRP cloth or FRP plate.
As preferably, described wing plate adopts steel concrete wing plate.
As preferably, described FRP girth member and wooden frame interface adopt dabbing to process structure, and adopt high-strength adhesive.In bottom or cross section, middle and lower part that FRP reinforcement position is beam, side and simple bending district.
Principle explanation: the FRP girth member (FRP muscle, FRP cloth or FRP plate) that is arranged at wood-Combination beam of steel and concrete bottom has good examining tensile behavior, bears the most of tensile stress in beam, and improves intensity and the bending rigidity of beam.Be arranged at the FRP cloth that wood-Combination beam of steel and concrete simple bending district is laterally wound around reinforcing and there is very high intensity, be used for the vertical deformation of restained beam, and improve intensity and the bending rigidity of beam.The u tie muscle that is arranged at engineered wood-Combination beam of steel and concrete curved scissors district is used for preventing FRP material generation stripping damage., under the effect of shear connector (bolt), each doing his best for three kinds of materials (timber, concrete and FRP), and collaborative work improves span, intensity and the rigidity of wood-Combination beam of steel and concrete greatly.There is some explanation herein: 1, the degree of FRP reinforcement depends on degree and the compound beam requirement of strength design that wooden frame destroys, as compound beam bottom, paste one deck FRP cloth and meet design requirement without continuing reinforcement, continue reinforcement and can under load action, occur that over-reinforced beam destroys; As compound beam bottom does not meet design requirement and can continue to increase reinforcement degree with simple bending district stickup one deck FRP cloth.2, for timber buildings in ancient times, FRP reinforcement material can be in wooden frame side and bottom all can reinforce.3, for Modern Wood Construction, FRP reinforcement material can all can be reinforced in wooden frame top, side and bottom, and considers the effect of FRP materials reinforcing, can appropriateness reduce wooden frame sectional dimension.4, before pasting FRP materials reinforcing, for increase bi-material contact area, prevent FRP material generation stripping damage, at wooden frame reinforcement interface, should do dabbing and process.5, should consider during wood-Combination beam of steel and concrete Cross section Design to form and be similar to reinforced concrete beam under load action, to give full play to the effect of FRP materials reinforcing as far as possible.6, wood-Combination beam of steel and concrete is considered the effect of FRP materials reinforcing when span design, and span can appropriateness improve.
Beneficial effect: the material reinforced wood-Combination beam of steel and concrete of FRP for this patent: the FRP material (FRP muscle, FRP cloth or FRP plate) of wood-Combination beam of steel and concrete bottom or Nei Ji side, cross section, middle and lower part, by most of tensile stress of bearing in beam, and improve bending rigidity and the intensity of beam; The u tie muscle in wood-Combination beam of steel and concrete curved scissors district can meet the requirement that prevents FRP material generation stripping damage; The shear connector of wood-Combination beam of steel and concrete can closely connect wooden frame and steel concrete wing plate, makes material give full play to each self-applying, improves the overall performance of beam; FRP reinforcement wood-Combination beam of steel and concrete, easy to operate, original structure is without any damage and do not affect the appearance.
Consider wood-Combination beam of steel and concrete that FRP reinforces, when design, can reduce the sectional dimension of engineered wood beams, and improve the span of wood-Combination beam of steel and concrete.FRP material is applied in wood-Combination beam of steel and concrete building, the use of building to timber will obviously be reduced, reach the object of saving timber, and well meet the requirement of building to structure, in the stabilization works of wooden construction and modern wood structure, play a significant role in ancient times.In addition,, along with the application and development of wooden construction in China, FRP reinforces wooden reinforcing bar-concrete combination beam will have good application future and development prospect in China.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing wood-Combination beam of steel and concrete;
Fig. 2 is the utility model compound beam schematic cross-section;
Fig. 3 is the utility model compound beam front schematic view;
Fig. 4 is the utility model compound beam embodiment mono-front schematic view;
Fig. 5 is the utility model compound beam embodiment bis-front schematic view;
Fig. 6 is the utility model compound beam embodiment tri-front schematic view;
Fig. 7 is the utility model compound beam embodiment tetra-front schematic view.
The specific embodiment
Below in conjunction with the specific embodiment and accompanying drawing, the utility model is described further:
As shown in Figures 2 and 3, a kind of FRP, wood and concrete combination beam, comprise concrete flange plate 1, shear connector 2, wooden frame 3, FRP girth member 4, reinforcing bar 5, u tie muscle 6 and FRP cloth 7.Between described concrete flange plate 1 and wooden frame 3, be provided with shear connector 2.Described shear connector 2 adopts bolt.The bottom of described wooden frame 3 or Nei Ji side, cross section, middle and lower part are provided with FRP girth member 4.Described FRP girth member 4 is FRP muscle, FRP cloth or FRP plate.Described compound beam simple bending district adopts FRP cloth 7 to be laterally wound around and to reinforce.The FRP girth member in described compound beam curved scissors district adopts u tie muscle 6 to carry out anchoring.
Embodiment mono-
If when the FRP girth member 4 arranging in the bottom of wood-Combination beam of steel and concrete or cross section, middle and lower part can meet requirement of strength design, without compound beam is continued to reinforcement, as shown in Figure 4.
Embodiment bis-
If when the FRP girth member 4 arranging in the bottom of wood-Combination beam of steel and concrete or cross section, middle and lower part and the FRP cloth of simple bending section setting can not meet requirement of strength design, can in the bottom, side of wooden frame 3, adopt FRP girth member 4 to continue reinforcement, as shown in Figure 5.
Embodiment tri-
By calculating or detecting, find that compound beam is in the lower sympodium of load action appears at the steel concrete wing plate of wood-Combination beam of steel and concrete, can on wooden frame 3 tops, side, adopt 4 reinforcement of FRP girth member, as shown in Figure 6.
Embodiment tetra-
For large span wood-Combination beam of steel and concrete, can be along the length direction of compound beam uniform horizontal winding FRP cloth 7, as shown in Figure 7.
It should be pointed out that for those skilled in the art, not departing under the prerequisite of the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.In the present embodiment not clear and definite each ingredient all available prior art realized.
Claims (6)
1. a FRP, wood and Combination beam of steel and concrete, it is characterized in that: comprise steel concrete wing plate, wooden frame, shear connector, FRP girth member, FRP cloth, u tie muscle, between described steel concrete wing plate and wooden frame, be provided with shear connector, the bottom of described wooden frame or Nei Ji side, cross section, middle and lower part are provided with FRP girth member, described compound beam simple bending district adopts FRP cloth to be laterally wound around reinforcing, and the FRP girth member in described compound beam curved scissors district adopts u tie muscle to carry out anchoring.
2. a kind of FRP according to claim 1, wood and Combination beam of steel and concrete, is characterized in that: described shear connector adopts bolt or FRP muscle.
3. a kind of FRP according to claim 1, wood and Combination beam of steel and concrete, is characterized in that: described FRP girth member is FRP muscle, FRP cloth or FRP plate.
4. a kind of FRP according to claim 1, wood and Combination beam of steel and concrete, is characterized in that: described wing plate adopts steel concrete wing plate.
5. a kind of FRP according to claim 1, wood and Combination beam of steel and concrete, is characterized in that: described wooden frame adopts log beam or engineered wood beams.
6. a kind of FRP according to claim 1, wood and Combination beam of steel and concrete, is characterized in that: described FRP girth member and wooden frame interface adopt dabbing to process structure, and adopt high-strength adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320631565.0U CN203514637U (en) | 2013-10-12 | 2013-10-12 | FRP (fiber reinforced Plastic), wood and reinforced concrete composite beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320631565.0U CN203514637U (en) | 2013-10-12 | 2013-10-12 | FRP (fiber reinforced Plastic), wood and reinforced concrete composite beam |
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| CN203514637U true CN203514637U (en) | 2014-04-02 |
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| CN201320631565.0U Expired - Fee Related CN203514637U (en) | 2013-10-12 | 2013-10-12 | FRP (fiber reinforced Plastic), wood and reinforced concrete composite beam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603462A (en) * | 2013-10-12 | 2014-02-26 | 南京工业大学 | FRP (fiber reinforced Plastic), wood and reinforced concrete composite beam |
| CN114673259A (en) * | 2022-03-31 | 2022-06-28 | 南京林业大学 | Structure for improving ductility of assembled combined structure and construction method |
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2013
- 2013-10-12 CN CN201320631565.0U patent/CN203514637U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603462A (en) * | 2013-10-12 | 2014-02-26 | 南京工业大学 | FRP (fiber reinforced Plastic), wood and reinforced concrete composite beam |
| CN114673259A (en) * | 2022-03-31 | 2022-06-28 | 南京林业大学 | Structure for improving ductility of assembled combined structure and construction method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20161012 |
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| CF01 | Termination of patent right due to non-payment of annual fee |