CN202730951U - Novel concrete structure and concrete composite pouring formwork free of removal and pouring inner mold - Google Patents
Novel concrete structure and concrete composite pouring formwork free of removal and pouring inner mold Download PDFInfo
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- CN202730951U CN202730951U CN 201220326152 CN201220326152U CN202730951U CN 202730951 U CN202730951 U CN 202730951U CN 201220326152 CN201220326152 CN 201220326152 CN 201220326152 U CN201220326152 U CN 201220326152U CN 202730951 U CN202730951 U CN 202730951U
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Abstract
The utility model discloses a novel concrete structure, a concrete composite pouring formwork free of removal and a pouring inner mold. The novel concrete structure is composed of at least one fiber reinforced composite material layer, a polyvinyl chloride inner mold layer and a reinforced concrete core layer in sequence from outside to inside. The concrete composite pouring formwork free of removal comprises a polyvinyl chloride inner mold layer and at least one layer of fiber reinforced composite material which is wound or pasted on the outer surface of the polyvinyl chloride inner mold layer. Each polyvinyl chloride inner mold layer is a hollow body or a hollow groove formed by compression molding. The novel concrete structure integrating fiber reinforced plastic (FRP), polyvinyl chloride (PVC) and reinforced concrete (RC) can notably enhance bearing capacity and non-deformability. The applied concrete composite pouring formwork free of removal integrating the FRP and the PVC not only improves the bearing capacity and the non-deformability of internal reinforced concrete but also is a formwork which is closed or semi-closed and free of removal. Therefore, construction procedures on site are reduced, a construction period is shortened, and a dirty, messy and poor construction site is avoided.
Description
Technical field
The utility model relates to construction work, bridge engineering and hydraulic engineering field, is specifically related to new concrete structure, concrete free removal composite concrete placement template and builds internal mold.
Background technology
The conventional construction method of concrete structure is in construction work, bridge engineering and the hydraulic engineering, in the wooden form that fixes or steel form, put into the cage of reinforcement that meets designing requirement, then concreting and vibration compacting in template, after hardening of concrete reaches some strength, remove again the formwork for placing of outside.The workload of building front formwork supporting plate and the rear form removal of sclerosis is very large, the breakage that produces inevitably template in the process.In the concreting process, the template slit also produces concrete unrestrained water clock, directly causes dirty, the unrest of job site, poor phenomenon.
In recent years, fibre reinforced composites (are called for short: FRP) have the good characteristics such as high-strength light, antifatigue, corrosion-resistant, endurance because of it, application in concrete structure is furtherd investigate and is paid close attention to, FRP frequently has been used for steel concrete and (has been called for short: RC) repairerment of structure, reinforcing and enhancing, has simultaneously quick construction convenient, rapidly and efficiently, not obvious change structure size, the advantage such as maintenance cost is low.FRP coiled material commonly used has good designability, and the surface that can stick in quickly and easily the reinforced concrete member of various shapes reaches the purpose of repairerment, reinforcing and enhancing.FRP repairs, reinforces existing concrete structure, not only can significantly strengthen the bearing capacity of structure, can also improve preferably non-deformability and the fatigue performance of concrete structure member.Especially, when FRP wrapped strengthening reinforced concrete post, FRP can also improve ductility and the energy absorption capability of reinforced concrete post to the effect of contraction of concrete core, and when bearing seismic loading, the rigidity of pillar can not reduce significantly.
But soft FRP cloth can't form skeleton, also can't form the concreting mould as Traditional Wood template or steel form etc., on traditional job practices, can't use in newly-built concrete structure.
Summary of the invention
For above problem, the utility model provide a kind of new concrete structure " the FRP+ polyvinyl chloride (and be called for short: PVC)+RC ", the utilization of high-strength FRP material, can reduce the reinforcement ratio of reinforced concrete structure, save a large amount of reinforcing bars, free removal composite concrete placement template " FRP+ PVC " replaces traditional steel form or wooden form in construction, cost is cheap, convenient and quick construction, the template that reduces be damaged, avoid on-site concrete trickle down water clock, and be convenient to pasting with the decorative engineering such as cladding of various ornament materials and construct.
The utility model is achieved through the following technical solutions:
New concrete structure, described concrete structure ecto-entad are successively by fibre reinforced composites layer, polyvinyl chloride internal mold layer and the Reinforced Concrete Core layer of one deck form at least.
The further improvement project of the utility model is that described fibre reinforced composites layer is carbon fibre reinforced composite, perhaps glass fibre reinforced composion.
The utility model provides a kind of steel concrete free removal composite concrete placement template; be applied in the newly-built reinforced concrete structure; strengthen concrete bearing capacity; for reinforced concrete structure provides weather resistance with low cost, corrosion-resistant, indehiscent topping; simultaneously template free removal; reduce on-site construction processes and cycle, also avoided concrete to trickle down water clock, improved dirty, the unrest of concrete construction site, poor phenomenon.
The utility model is achieved through the following technical solutions:
Composite shuttering is built in the concrete free removal, comprises polyvinyl chloride internal mold layer and winding or pastes at least one deck fibre reinforced composites layer at its external surface, ducted body or hollow groove that described polyvinyl chloride internal mold layer is compression molding.The outline of described ducted body cross section is circular, square, rectangle; The outline of described hollow groove cross section is square, rectangle, T-shaped, trapezoidal, the flower-basket type of upper shed.Ducted body can be used for reinforced concrete post, and hollow groove can be used for reinforced concrete beam.
The further improvement project of the utility model is, the wall thickness 5-10mm of described polyvinyl chloride internal mold layer, and the straightedge limit has the arc chord angle of radius 20-40mm, to reduce the stress concentration phenomenon at sharp edge place.
The utility model more further improvement project be, described vinyl chloride internal mold layer inwall is provided with the ribs of many projections, the ribs end be circle.
The utility model more further improvement project be, the height of described ribs is 25mm, thickness is 5mm, the round diameter of ribs end is 10mm.
The utility model further improvement project is that described fibre reinforced composites layer is the strong composite material of carbon fiber, perhaps glass fibre reinforced composion.
The utility model also provides a kind of internal mold of building, and for newly-built RC provides formwork for placing, PVC ducted body or PVC hollow groove provide attachment for FRP, and high-strength light, corrosion resistant FRP are applied in the newly-built concrete structure.
The utility model is achieved through the following technical solutions:
Build internal mold, the described internal mold of building is the polyvinyl chloride internal mold, ducted body or hollow groove that described polyvinyl chloride internal mold is compression molding.The outline of described ducted body cross section is circular, square, rectangle; The outline of described hollow groove cross section is square, rectangle, T-shaped, trapezoidal, the flower-basket type of opening.
The further improvement project of the utility model is, the wall thickness 5-10mm of described polyvinyl chloride internal mold, and the straightedge limit has the arc chord angle of radius 20-40mm.
The utility model more further improvement project be, described vinyl chloride internal mold inwall is provided with the ribs of many projections, the ribs end be circle.
The utility model more further improvement project be, the height of described ribs is 25mm, thickness is 5mm, the round diameter of ribs end is 10mm.
The utility model is compared with existing concrete structure and construction technology, has following obvious advantage:
One, the new concrete structure of " FRP+PVC+RC " strengthens bearing capacity and the non-deformability of structure significantly.The ducted body or the hollow groove that adopt the PVC compression molding forming to make, inwall is provided with stiffening rib, the FRP material is twined or pasted in the outside in a different manner, form the free removal composite concrete placement template of new concrete structure, take full advantage of high-strength FRP to the effect of contraction of concrete core, reduce reinforcement ratio, save reinforcing bar, improve the non-deformability of concrete core, increase the ductility of new concrete structure.
Two, the free removal composite concrete placement template of " FRP+PVC "; bearing capacity and the non-deformability of concrete core had both been improved; it is again the integral mold plate of sealing or semi-enclosed free removal; reduce operation; the shortening cycle; avoid the on-the-spot unrestrained water clock of coagulation body, improve that the building site is dirty, unrest, poor phenomenon, also provide weather resistance, corrosion-resistant, indehiscent topping for Reinforced Concrete Core.
Three, the utility model changes a large amount of wooden forms of use and steel form in the reinforced concrete structure tradition casting craft, to save timber, steel resources, energy-saving and emission-reduction, utilize waste and old recovery plastics-production PVC material build internal mold, can also drive the industrial chain of waste or used plastics disposal and utilization.A large amount of PVC discarded objects, formed serious " white pollution ", although country puts into effect production and the application of " plastic limit " restriction plastic products, the Optimal action of truly eliminating " white pollution " is the industry development of guiding plastic refuse downstream product.
Four, in the utility model the PVC material build being used in conjunction with each other of internal mold and FRP.Traditional F RP repair and the construction of reinforced steel concrete structure in, although FRP cloth have high-strength light, corrosion-resistant, the advantage such as can design, can strengthen significantly bearing capacity and the non-deformability of concrete structure.But thin and soft FPR cloth can't be directly used in newly-built concrete structure so far, and the internal mold of building of PVC material provides the moulding internal mold that twines or paste FRP for FRP.The winding of FRP and paste and for the internal mold of building of PVC material provides topping has avoided PVC directly to expose and the weathering that causes and buckling deformation etc.
Five, the inwall of building internal mold of the internal layer PVC material of concrete free removal composite concrete placement template is provided with stiffening rib to inner process in the utility model, stability and the anti-buckling deformation ability of internal mold have been improved, and after the inner hardening of concrete of building, concrete is combined tightr with free removal composite concrete placement template, guarantee the globality of template and Reinforced Concrete Core.
Six, the straightedge limit of the internal mold of polyvinyl chloride described in the utility model has the arc chord angle of radius 20-40mm, to reduce the stress concentration phenomenon at sharp edge place.
Description of drawings
Fig. 1 is the utility model new concrete structure sectional view
Fig. 2 is concrete free removal composite concrete placement template ducted body cross sectional representation in the utility model.
Fig. 3 is concrete free removal composite concrete placement template hollow groove cross sectional representation in the utility model.
The specific embodiment
As shown in Figure 1, new concrete structure ecto-entad of the present utility model is comprised of five layers of carbon-fiber-reinforcomposite composite material layer 1, polyvinyl chloride internal mold layer 2 and Reinforced Concrete Core layer 3 successively.
Described new concrete structure is the cross section of 200mm * 200mm and the height of 600mm.
As shown in Figure 2, the free removal composite concrete placement template of new concrete structure of the present utility model comprises polyvinyl chloride internal mold layer 2 and twines or paste carbon-fiber-reinforcomposite composite material layer 1 at its external surface, and 2 layers of described polyvinyl chloride internal molds are the square ducted bodies of compression molding.
The wall thickness 5mm of described polyvinyl chloride internal mold layer 2, the straightedge limit has the arc chord angle of radius 20mm, to reduce the stress concentration phenomenon at sharp edge place.Described polyvinyl chloride internal mold layer 2 inwalls are provided with the ribs 4 of eight projections, and ribs 4 ends are circular, increase stability and the non-deformability of polyvinyl chloride internal mold layer 2.Described ribs 4 thickness are 5mm, and the end is the circle of diameter 10mm, and ribs 4 overall heights are 25mm, are equivalent to the thickness of reinforced concrete structure topping.
The manufacturing process of embodiment 1 is: with waste plastic compression molding forming PVC internal mold 2, five layers of CFRP gradation are pasted on PVC internal mold 2, paste about 5 minutes of the time interval for every layer, then with this free removal composite concrete placement template natural curing after 5 days, put into the cage of reinforcement that meets designing requirement, then concreting and vibration compacting in free removal composite concrete placement template were according to the corresponding standard maintenance of country 28 days.
Embodiment 2
Described carbon-fiber-reinforcomposite composite material layer 1 is five layers, and the straightedge limit of described polyvinyl chloride internal mold layer 2 has the arc chord angle of radius 25mm, and all the other are implemented such as embodiment 1.
Embodiment 3
Described carbon-fiber-reinforcomposite composite material layer 1 is three layers, and the straightedge limit of described polyvinyl chloride internal mold layer 2 has the arc chord angle of radius 40mm, and all the other are implemented such as embodiment 1.
Build up 3 plain concrete samples (specimen coding: SPC1, SPC2 SPC3) with ad eundem with a batch concrete casting, have the cross section of identical 200mm * 200mm and the height of 600mm.With embodiment 1(specimen coding: R20L5), embodiment 2(specimen coding: R25L5), embodiment 3(specimen coding: R40L3) jointly carry out load test, their ultimate bearing capacity of comparative study and ultimate deformation ability.
Sample parameter matrix table sees Table one.
Carbon fibre reinforced composite confined concrete axial compression trial curve sees Table two.
Wherein: RxxLy explanation, R: cylinder straightedge limit arc chord angle radius designation; Xx: cylinder straightedge limit arc chord angle radius, unit: millimeter; L: carbon fibre reinforced composite (CFRP) number of plies symbol; Y: carbon-fiber-reinforcomposite composite material layer number.
Table one:
Table two:
Claims (11)
1. new concrete structure, it is characterized in that: described concrete structure ecto-entad is successively by fibre reinforced composites layer (1), polyvinyl chloride internal mold layer (2) and the Reinforced Concrete Core layer (3) of one deck form at least.
2. new concrete structure according to claim 1, it is characterized in that: described fibre reinforced composites layer (1) is carbon fibre reinforced composite, perhaps glass fibre reinforced composion.
3. concrete free removal composite concrete placement template, it is characterized in that: comprise polyvinyl chloride internal mold layer (2) and twine or paste at least one deck fibre reinforced composites layers (1) at its external surface, described polyvinyl chloride internal mold layer (2) is ducted body or the hollow groove of compression molding; The outline of described ducted body cross section is circular, square, rectangle; The outline of hollow groove cross section is square, rectangle, T-shaped, trapezoidal, the flower-basket type of upper shed.
4. concrete free removal composite concrete placement template according to claim 3, it is characterized in that: the wall thickness 5-10mm of described polyvinyl chloride internal mold layer (2), the straightedge limit has the arc chord angle of radius 20-40mm.
5. concrete free removal composite concrete placement template according to claim 3, it is characterized in that: described vinyl chloride internal mold layer (2) inwall is provided with the ribs (4) of many projections, and ribs (4) end is circular.
6. concrete free removal composite concrete placement template according to claim 5, it is characterized in that: the height of described ribs (4) is 25mm, and thickness is 5mm, and the round diameter of ribs (4) end is 10mm.
7. concrete free removal composite concrete placement template according to claim 3, it is characterized in that: described fibre reinforced composites layer (1) is the strong composite material of carbon fiber, perhaps glass fibre reinforced composion.
8. build internal mold, it is characterized in that: the described internal mold of building is polyvinyl chloride internal mold (2), and described polyvinyl chloride internal mold (2) is ducted body or the hollow groove of compression molding; The outline of described ducted body cross section is circular, square, rectangle; The outline of hollow groove cross section is square, rectangle, T-shaped, trapezoidal, the flower-basket type of upper shed.
9. the internal mold of building according to claim 8, it is characterized in that: the wall thickness 5-10mm of described polyvinyl chloride internal mold (2), the straightedge limit has the arc chord angle of radius 20-40mm.
10. the internal mold of building according to claim 8, it is characterized in that: described vinyl chloride internal mold (2) inwall is provided with the ribs (4) of many projections, and ribs (4) end is circular.
11. the internal mold of building according to claim 10 is characterized in that: the height of described ribs (4) is 25mm, and thickness is 5mm, and the round diameter of ribs (4) end is 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220326152 CN202730951U (en) | 2012-07-06 | 2012-07-06 | Novel concrete structure and concrete composite pouring formwork free of removal and pouring inner mold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220326152 CN202730951U (en) | 2012-07-06 | 2012-07-06 | Novel concrete structure and concrete composite pouring formwork free of removal and pouring inner mold |
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| CN202730951U true CN202730951U (en) | 2013-02-13 |
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| CN 201220326152 Expired - Fee Related CN202730951U (en) | 2012-07-06 | 2012-07-06 | Novel concrete structure and concrete composite pouring formwork free of removal and pouring inner mold |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776954A (en) * | 2012-07-06 | 2012-11-14 | 淮阴工学院 | Novel concrete structure, concrete dismantlement-free composite pouring mold plate and pouring internal mold |
| CN107288029A (en) * | 2017-08-07 | 2017-10-24 | 重庆交通大学 | The method for making square column type performance of concrete column confined |
| CN107288030A (en) * | 2017-08-07 | 2017-10-24 | 重庆交通大学 | The method for making cylindrical concrete pier stud |
| CN109487956A (en) * | 2018-11-26 | 2019-03-19 | 台州学院 | A kind of PVC-FRP pipe constraint reinforced column and preparation method thereof |
-
2012
- 2012-07-06 CN CN 201220326152 patent/CN202730951U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776954A (en) * | 2012-07-06 | 2012-11-14 | 淮阴工学院 | Novel concrete structure, concrete dismantlement-free composite pouring mold plate and pouring internal mold |
| CN107288029A (en) * | 2017-08-07 | 2017-10-24 | 重庆交通大学 | The method for making square column type performance of concrete column confined |
| CN107288030A (en) * | 2017-08-07 | 2017-10-24 | 重庆交通大学 | The method for making cylindrical concrete pier stud |
| CN109487956A (en) * | 2018-11-26 | 2019-03-19 | 台州学院 | A kind of PVC-FRP pipe constraint reinforced column and preparation method thereof |
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Legal Events
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| 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: 20130213 Termination date: 20140706 |
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| EXPY | Termination of patent right or utility model |