CN220414846U - Permanent template of hybrid fiber reinforced cement-based beam column node - Google Patents
Permanent template of hybrid fiber reinforced cement-based beam column node Download PDFInfo
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- CN220414846U CN220414846U CN202321013440.1U CN202321013440U CN220414846U CN 220414846 U CN220414846 U CN 220414846U CN 202321013440 U CN202321013440 U CN 202321013440U CN 220414846 U CN220414846 U CN 220414846U
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- 239000000835 fiber Substances 0.000 title claims abstract description 140
- 239000004568 cement Substances 0.000 title claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 44
- 238000009415 formwork Methods 0.000 claims abstract description 33
- 239000004567 concrete Substances 0.000 claims abstract description 31
- 239000000853 adhesive Substances 0.000 claims abstract description 12
- 230000001070 adhesive effect Effects 0.000 claims abstract description 12
- 238000009941 weaving Methods 0.000 claims abstract description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 9
- 239000004917 carbon fiber Substances 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000003491 array Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 19
- 238000005538 encapsulation Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 239000010405 anode material Substances 0.000 description 6
- 238000004210 cathodic protection Methods 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 239000004593 Epoxy Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002657 fibrous material Substances 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 3
- 229920002748 Basalt fiber Polymers 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Abstract
The utility model provides a permanent template of a hybrid fiber reinforced cement-based beam column node, which is formed by splicing a hollow permanent template of a column and a permanent template of a beam, wherein the permanent template of the column and the permanent template of the beam are prepared by adopting a hybrid fiber reinforced cement-based material, the hybrid fiber cement-based material comprises a hybrid fiber cement material layer positioned at an inner layer and an outer layer and a hybrid fiber grid layer positioned between the two, and the hybrid fiber grid is formed by weaving dry fiber bundles and impregnated fiber bundles at intervals in a longitudinal-transverse mode; the permanent template of post is equipped with the trompil in the junction with the permanent template of roof beam, and in the seam, the hybrid fiber net that both stretches out is connected through the adhesive, the outside of seam is equipped with hybrid fiber cement base material encapsulation layer. The permanent formwork of the technical scheme of the utility model simplifies the construction process, shortens the construction period, increases the mechanical property of the concrete structure and saves resources.
Description
Technical Field
The utility model belongs to the technical field of building structures, and particularly relates to a permanent template for a hybrid fiber reinforced cement-based beam column node.
Background
In the present building industry, concrete is still the most used artificial building material, and a form is an essential ring for concrete molding in the pouring construction process, and determines the construction efficiency, quality and cost of the concrete building structure. In general, concrete form engineering accounts for 30% -50% of the total cost, 40% -50% of the labor consumption and about 50% of the construction period. However, most of the concrete templates used at present are temporary templates made of wood or steel, and the templates are removed after the concrete reaches the design strength in the construction stage, so that the concrete templates do not participate in the bearing process in the use stage of the concrete structure, and great waste of natural resources is caused. Unlike temporary forms, permanent forms are commonly stressed with concrete during the use of the concrete structure, in addition to supporting and setting during the construction phase. Therefore, the permanent template can simplify the construction process, shorten the construction period, reduce the construction cost, save resources and protect the environment. In addition, due to lower tensile strength, ductility and damage tolerance of common concrete, the surface of the concrete structure is easy to crack, and more structural durability problems are caused. The composite structure is hopeful to overcome the defects of the traditional concrete structure by using the fiber reinforced cement-based composite material with better mechanical property and durability as a permanent template and pouring concrete in the permanent template.
Disclosure of Invention
Aiming at the technical problems, the utility model discloses a permanent template for a hybrid fiber reinforced cement-based beam column node, which simplifies construction procedures, reduces construction cost, increases durability of a concrete structure and relieves the current situation of shortage of fresh water river sand resources.
In this regard, the utility model adopts the following technical scheme:
the permanent template of the hybrid fiber cement-based beam column node is formed by splicing a hollow permanent template of a column and a permanent template of a beam, wherein the permanent template of the column and the permanent template of the beam are prepared by adopting a hybrid fiber cement-based material layer, the hybrid fiber cement-based material layer comprises a hybrid fiber cement material layer positioned at an inner layer and an outer layer and a hybrid fiber grid layer positioned between the two, and the hybrid fiber grid is formed by weaving dry fiber bundles and impregnated fiber bundles at intervals in a longitudinal and transverse mode;
the permanent template of post is equipped with the trompil in the junction with the permanent template of roof beam, trompil department, the hybrid fiber net of the permanent template of post stretches out, the hybrid fiber net of the permanent template of roof beam port department stretches out, in the junction of the permanent template of post and the permanent template of roof beam, the hybrid fiber net that both stretches out passes through the adhesive and connects, the outside of junction is equipped with hybrid fiber cement base material encapsulation layer, adopts the encapsulation layer that hybrid fiber cement base material made promptly.
Wherein, the impregnated fiber bundles are dry fiber bundles and are made of epoxy resin cured materials, which are materials in the prior art. The column permanent template and the beam permanent template are prepared by adopting a template preparation method in the prior art and utilizing a hybrid fiber reinforced cement-based material.
According to the technical scheme, a permanent template prepared from a hybrid fiber reinforced cement-based material is adopted, dry fiber bundles and impregnated fiber bundles in a fiber grid are distributed at intervals in two directions, wherein the dry fiber bundles are soft in texture, small in rigidity, hard in impregnated fiber bundles and large in rigidity, and the hybrid fiber grid with good working performance is obtained by mixing the two fibers. By adopting the technical scheme, the tensile and crack resistance of the cement-based material can be improved, the problem of cracking of the permanent formwork caused by concrete pouring can be avoided, and the hybrid fiber cement-based material is lighter and higher in strength under the same performance requirement. The adoption of the mixed fiber cement-based material for encapsulation can prevent the adhesive from being influenced by external environment. At the joint, the fiber grids of the two extend out, and the hybrid fiber grids in the beam and column members are integrated through the adhesive, so that the beam and column members are guaranteed to have good stress performance.
As a further improvement of the utility model, the beam permanent formwork is U-shaped.
As a further improvement of the utility model, the adhesive is a conductive adhesive, and the dry fiber bundles in the fiber grid and the fiber materials used for impregnating the fiber bundles are conductive fibers, so that the auxiliary anode materials in the beam and column members can be connected into a whole.
As a further improvement of the utility model, the inner walls of the column permanent formwork and the beam permanent formwork are provided with a plurality of grooves for increasing the interfacial adhesion performance of the cement-based material and the concrete material. By adopting the technical scheme, the combination property of the structure is better, and the structure can bear externally applied loads together.
As a further development of the utility model, the groove arrays are distributed.
As a further improvement of the utility model, the depth of the groove is 3-10mm, and the width is 5-15mm. Further preferably, the depth of the groove is 5mm and the width is 10mm.
As a further improvement of the utility model, the fiber materials adopted by the dry fiber bundles and the impregnated fiber bundles are at least two of carbon fiber bundles, glass fiber bundles, basalt fiber bundles and aramid fiber bundles. Wherein the fiber materials used for the dry fiber bundles and the impregnated fiber bundles are different fiber materials.
As a further improvement of the utility model, the interior of the hybrid fiber cement-based material layer is provided with chopped fiber yarns. By adopting the technical scheme, the tensile and crack resistance of the cement-based material can be improved, so that the hybrid fiber cement-based material is lighter and stronger.
As a further improvement of the present utility model, the chopped fiber includes at least two of PP fiber, PVA fiber, PE fiber, steel fiber, and carbon fiber.
As a further improvement of the present utility model, carbon fibers are used for the dry fiber bundles and chopped fiber filaments. By adopting the technical scheme, the permanent template of the hybrid fiber reinforced cement-based beam column node can be used as an auxiliary anode material of an impressed current cathodic protection system to prevent internal steel bars or steel materials from being corroded.
As a further improvement of the present utility model, the adhesive is a conductive epoxy.
As a further refinement of the present utility model, the column permanent form may be square, round or polygonal, and the column permanent form and the beam permanent form may be reinforced concrete members, section steel concrete members or a combination thereof.
The utility model also discloses a preparation method of the hybrid fiber reinforced cement-based beam column node permanent template, which comprises the following steps:
step S1, respectively manufacturing a column permanent template and a beam permanent template; the column permanent template is provided with an opening with the same cross section size as the beam permanent template, and a fiber grid at the opening extends out; fiber grids at the ports of the beam permanent templates extend out;
s2, fixing and placing the column permanent template, and trimming the fiber mesh at the opening; splicing the beam permanent template and the column permanent template, bonding the beam permanent template at the opening with a fiber grid extending out of the column permanent template by adopting an adhesive at the splicing position, and packaging by adopting a hybrid fiber cement-based material at the outer side of the splicing position.
In step S2, the adhesive is conductive epoxy resin, and when the conductive epoxy resin is used for curing the fiber mesh, small wood strips are used for enclosing in the curing area, so that the conductive epoxy resin is prevented from flowing outwards.
Further, during curing, the conductive epoxy can be heated to accelerate the curing speed.
Compared with the prior art, the utility model has the beneficial effects that:
the permanent template of the technical scheme of the utility model simplifies the construction process, shortens the construction period, reduces the construction cost, saves resources and protects the environment, is used as a structural reinforcing material and a dense protection layer outside the concrete, and increases the mechanical property of the concrete structure. Meanwhile, if conductive fibers and conductive adhesives are adopted, the permanent template can be used as an anode material of an impressed current cathodic protection system, so that the durability of the concrete structure is improved. In addition, the permanent template plays a role in supporting and shaping in the construction stage, is stressed together with concrete in the use stage of the concrete structure, increases the bearing capacity and rigidity of the structure, and can greatly improve the service life of the concrete structure and reduce the carbon emission in the whole service life period of the structure after the impressed current cathodic protection system is further applied.
Drawings
FIG. 1 is a schematic diagram of a hybrid fiber cement-based column permanent formwork structure in accordance with an embodiment of the present utility model.
Fig. 2 is a schematic diagram of a hybrid fiber cement-based beam permanent formwork structure in accordance with an embodiment of the present utility model.
Fig. 3 is a schematic structural view of a hybrid fiber lattice according to an embodiment of the present utility model.
Fig. 4 is a schematic view of beam and column form splicing according to an embodiment of the present utility model.
Fig. 5 is a schematic diagram of a permanent template of a node after bonding and curing of a conductive epoxy in accordance with an embodiment of the present utility model.
Fig. 6 is a schematic diagram of a permanent form of a node after encapsulation of a hybrid fiber cement-based material in accordance with an embodiment of the present utility model.
Fig. 7 is a schematic view of a beam column node formwork dismantling method according to an embodiment of the utility model.
The reference numerals include:
1-column permanent formwork, 2-beam permanent formwork, 3-hybrid fiber cement-based material layer, 4-hybrid fiber grid, 5-groove, 6-conductive epoxy, 7-encapsulation layer, 11-opening, 41-dry fiber bundle, 42-impregnated fiber bundle.
Detailed Description
Preferred embodiments of the present utility model are described in further detail below.
The multifunctional hybrid fiber reinforced cement-based beam column node permanent template can be used as a structural reinforcing material, an anode material of an impressed current cathodic protection system and a dense protection layer outside concrete.
As shown in fig. 1 to 7, the beam column node permanent formwork is formed by splicing a column permanent formwork 1 with a side surface open hole and a U-shaped beam permanent formwork 2, wherein the column permanent formwork 1 and the U-shaped beam permanent formwork 2 are made of a hybrid fiber reinforced cement-based composite material. The hybrid fiber cement-based composite material comprises a hybrid fiber cement-based material layer 3 positioned on the inner side and the outer side and a hybrid fiber mesh 4 positioned in the middle, wherein the hybrid fiber mesh 4 is positioned between the hybrid fiber cement-based material layer 3 on the inner layer and the hybrid fiber cement-based material layer 3 on the outer layer.
Furthermore, chopped fiber yarns are distributed in the mixed fiber cement-based material layer 3, so that the tensile and crack resistance of the cement-based material can be improved, the problem of permanent formwork cracking caused by concrete pouring can be avoided, and the mixed fiber cement-based material is lighter and higher in weight and strength under the same performance requirement. The chopped fiber yarn can adopt at least two of PP fiber, PVA fiber, PE fiber, steel fiber and carbon fiber.
As shown in fig. 3, the hybrid fiber grid 4 is formed by arranging dry fiber bundles 41 and impregnated fiber bundles 42 at intervals, and the fiber bundle materials adopted by the dry fiber bundles 41 and the impregnated fiber bundles 42 are at least two of carbon fiber bundles, glass fiber bundles, basalt fiber bundles and aramid fiber bundles. The dry fiber bundles 41 and the impregnated fiber bundles 42 are distributed at intervals in both directions, wherein the dry fiber bundles 41 are soft in texture, small in rigidity, and the impregnated fiber bundles 42 are hard in texture and large in rigidity. Depending on the mixing ratio of the two fibers, a mixed fiber mesh 4 with good working properties can be designed.
The inner walls of the column permanent formwork 1 and the beam permanent formwork 2 are provided with grooves 5 with the depth of 5mm and the width of 10mm, so that the interface bonding performance of cement-based and concrete materials is improved, the combination performance of the structure is better, and the structure can bear externally applied loads together.
In order to facilitate the connection of beam-column joints, a prefabricated column permanent template 1 is perforated 11 at the joint of the column permanent template 1 and the beam permanent template 2, and a section of hybrid fiber grid 4 reserved at the edge of a hole is stretched out for the next splicing operation, as shown in fig. 1; at the same time, a part of the hybrid fiber grids 4 also extend out of the ports of the beam permanent formwork 2, so that the formwork is spliced conveniently, as shown in fig. 2.
The column permanent template 1 and the beam permanent template 2 are provided with the hybrid fiber grids 4 which extend at the joint, and when in splicing, the hybrid fiber grids extending out of the column permanent template 1 and the beam permanent template 2 are connected through the conductive epoxy resin 6, so that the hybrid fiber grids 4 in the column permanent template 1 and the beam permanent template 2 are integrated, and good stress performance is ensured. The outer side of the joint is provided with a mixed fiber cement-based material packaging layer 7.
In addition, when the dry fiber bundles and the chopped fiber yarns are selected as carbon fibers, the auxiliary anode materials in the column permanent formwork 1 and the beam permanent formwork 2 can be connected into a whole through the connection of fiber grids, and can be used as the auxiliary anode materials of an impressed current cathodic protection system, so that the corrosion of internal steel bars or steel materials can be prevented. After the conductive epoxy resin 6 is solidified, the interfaces of the column permanent template 1 and the beam permanent template 2 are encapsulated by adopting a mixed fiber cement-based material to form an encapsulation layer 7, so that the steel bars can be bound, and concrete is poured, thereby completing the construction of the structure.
When in construction, after the column permanent templates 1 and the beam permanent templates 2 are spliced together in advance, the extended fiber grids are bonded and solidified by adopting the conductive epoxy resin 6, and then are packaged by adopting the mixed fiber cement-based material, so that the consumption of templates can be saved, the construction efficiency of a building structure can be improved, the dense permanent template shell can also protect internal concrete and reinforcing steel bars, and the durability can be improved. In addition, after the beam column node pouring is completed, an impressed current cathodic protection system can be formed by the internal steel bars or steel materials, carbon fiber bundles and chopped carbon fiber yarns in the permanent template, and the system can play a role in improving the durability of the structure from the initial use stage of the structure, so that the service life of the structure is prolonged.
Further, the column permanent formwork 1 may be square, round or polygonal, and the beam permanent formwork 2 and the column permanent formwork 1 may be reinforced concrete members, steel reinforced concrete members or a combination thereof, and only Fang Xingmo plates are described in this embodiment.
The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.
Claims (8)
1. A permanent template of hybrid fiber reinforced cement-based beam column node is characterized in that: the composite fiber reinforced cement-based material is formed by splicing a hollow column permanent template and a beam permanent template, wherein the column permanent template and the beam permanent template are prepared by adopting a composite fiber reinforced cement-based material layer which is positioned between an inner layer and an outer layer and a composite fiber grid layer which is positioned between the inner layer and the outer layer, and the composite fiber grid is formed by weaving dry fiber bundles and impregnated fiber bundles at intervals;
the beam permanent template is characterized in that an opening is formed in the joint of the beam permanent template and the column permanent template, a hybrid fiber grid of the beam permanent template extends out of the opening, a hybrid fiber grid at a port of the beam permanent template extends out of the opening, the two extending hybrid fiber grids are connected through an adhesive at a joint of the beam permanent template and the column permanent template, and a hybrid fiber cement-based material packaging layer is arranged on the outer side of the joint.
2. The hybrid fiber cement-based beam column node permanent formwork of claim 1, wherein: the inner walls of the column permanent templates and the beam permanent templates are provided with a plurality of grooves for increasing the interfacial adhesion performance of the cement-based material and the concrete material.
3. The hybrid fiber cement-based beam column node permanent formwork of claim 2, wherein: the groove arrays are distributed.
4. A hybrid fiber cement-based beam column node permanent formwork as recited in claim 3, wherein: the depth of the groove is 3-10mm, and the width of the groove is 5-15mm.
5. The hybrid fiber cement-based beam column node permanent formwork of claim 1, wherein: chopped fiber yarns are distributed in the mixed fiber cement material layer.
6. The hybrid fiber cement-based beam column node permanent formwork of claim 1, wherein: the dry fiber bundles and the chopped fiber filaments are carbon fibers.
7. The hybrid fiber cement-based beam column node permanent formwork of claim 1, wherein: the adhesive is conductive epoxy resin.
8. The hybrid fiber cement-based beam column node permanent formwork of claim 1, wherein: the beam permanent formwork is U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321013440.1U CN220414846U (en) | 2023-04-28 | 2023-04-28 | Permanent template of hybrid fiber reinforced cement-based beam column node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321013440.1U CN220414846U (en) | 2023-04-28 | 2023-04-28 | Permanent template of hybrid fiber reinforced cement-based beam column node |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220414846U true CN220414846U (en) | 2024-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321013440.1U Active CN220414846U (en) | 2023-04-28 | 2023-04-28 | Permanent template of hybrid fiber reinforced cement-based beam column node |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220414846U (en) |
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2023
- 2023-04-28 CN CN202321013440.1U patent/CN220414846U/en active Active
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