Prestressed fiber gridding cloth reinforced reinforced concrete prefabricated slab and processing technology
By using prestressed fiber mesh cloth and full-tooth bolt fixing technology in reinforced concrete prefabricated plates, the problems of low stiffness and easy cracking of reinforced concrete prefabricated plates are solved, the bending stiffness and crack resistance are improved, and the structural life is extended. It also reduces crack occurrence and achieves efficient fiber reinforcement effect.
Patent Information
- Application Number
- CN202411413430.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2044-10-11
AI Technical Summary
The problems of low stiffness of reinforced concrete prefabricated slabs, easy cracking of concrete surfaces, and easy rust steel bars. The existing fiber concrete has high price and low cost performance, and the complexity of prestress application increases the cost of engineering.
The prestressed fiber mesh cloth is used to reinforce the reinforced concrete prefabricated plate. The prestressed fiber mesh cloth is poured on the bottom surface of the plate, and the fiber mesh cloth is fixed with full-tooth bolts and anchor sliders. Prestress is applied to improve bending stiffness and Crack resistance. The process includes assembling the bottom mold and the side mold, wrapping the fiber mesh cloth, applying external force to drive the fiber mesh cloth to tension, and removing the test mold after concrete is poured to form an integral plate.
The bidirectional bending stiffness and bending bearing capacity of the prefabricated plate are improved, the number of cracks is reduced, the service life of the structure is extended, and the shrinkage and creep of concrete are offset by pretension force, preventing cracks and improving the crack resistance of the structure.
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Figure CN119321200A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of reinforced concrete prefabricated panels, and in particular to a prestressed fiber mesh cloth reinforced reinforced concrete prefabricated panel and a processing technology thereof. Background Art
[0002] Prefabricated reinforced concrete structure is one of the important directions of building structure development in my country. It is conducive to the development of my country's building industrialization, improving production efficiency and saving energy, developing green and environmentally friendly buildings, and is conducive to improving and ensuring the quality of construction projects. Prefabricated reinforced concrete floor slabs are one of the most important horizontal components in prefabricated reinforced concrete structures. Due to the low tensile strength of ordinary concrete, large drying shrinkage and temperature expansion and contraction deformation, prefabricated reinforced concrete floor slabs often have cracks of varying degrees and forms during construction and use. This is a fairly common phenomenon. Cracks in prefabricated reinforced concrete floor slabs not only affect the appearance of structural components, but also easily lead to floor leakage in bathrooms, kitchens and other locations, which in turn easily lead to steel corrosion and reduce the durability of the structure.
[0003] At present, fiber concrete is prepared by adding fibers with high tensile strength, high ultimate elongation and good alkali resistance to concrete, such as steel fiber concrete, glass fiber concrete, polypropylene fiber concrete and carbon fiber concrete, which can effectively improve the crack resistance and durability of concrete structures. However, fiber concrete is very expensive, and its cost performance is very low for improving the crack resistance and durability of concrete. In addition, prestressed reinforced concrete technology is an effective measure to improve the flexural rigidity of structural components and reduce the number and width of cracks in structural components. However, reinforced concrete precast panels may crack in both the length and width directions, which requires that when prefabricating floor slabs, prestressing must be applied to the transverse and longitudinal steel bars at the bottom of the slab, which greatly increases the complexity of the technology and the cost of the project. Summary of the invention
[0004] The present invention provides a prestressed fiber mesh cloth reinforced reinforced concrete precast plate to solve the problems in the prior art of low rigidity of reinforced concrete precast floor slabs, easy cracking of concrete surfaces, and easy rusting of steel bars; the present invention also provides a processing technology for prestressed fiber mesh cloth reinforced reinforced concrete precast plates.
[0005] In order to solve the above problems, the prestressed fiber mesh cloth reinforced reinforced concrete precast slab provided by the present invention adopts the following technical solution: Prestressed fiber mesh cloth reinforced reinforced concrete precast slab, including: ordinary steel mesh and concrete, prestressed fiber mesh cloth cast on the bottom surface of the slab, two short sides of the fiber mesh cloth are respectively wrapped on the long flat steel plate, the flat steel plate wrapped with the fiber mesh cloth is clamped between the L-shaped notch with the anchor slider and the horizontal plate of the long angle steel end plate, the anchor slider is fixed to the vertical plate of the angle steel end plate by full-thread bolts and nuts, and a pressure rod is provided at the end of the horizontal plate of the angle steel end plate, which is tightly attached to the fiber mesh cloth and parallel to the length direction of the angle steel end plate. The angle steel end plate, anchor slider, full-thread bolt, pressure rod, fiber mesh cloth and ordinary steel mesh are cast into a whole by cast-in-place concrete.
[0006] In order to solve the above problems, the processing technology of prestressed fiber mesh cloth reinforced reinforced concrete prefabricated slab provided by the present invention adopts the following technical solutions: The processing technology of prestressed fiber mesh cloth reinforced reinforced concrete prefabricated slab includes the following steps: S1: Assemble the bottom form and four-side form of the prestressed fiber mesh reinforced reinforced concrete precast slab to form a test mold, place the horizontal plates of the two angle steel end plates at the two ends of the test mold, and ensure that the vertical plates of the angle steel end plates are close to the short side form of the test mold, and then use full-thread bolts to fix the angle steel end plates to the short side form of the test mold; S2: Horizontally spread the fiber mesh cloth on the upper surface of the test mold bottom plate, wrap the two ends of the fiber mesh cloth around the flat steel plate respectively, and then place the flat steel plate wrapped with the fiber mesh cloth on the bottom plate of the angle steel end plate, keeping the flat steel plate parallel to the angle steel end plate; S3: Insert the full-thread bolt with nut into the bolt hole of the anchor slider, place the anchor slider with the full-thread bolt on the flat steel plate, and clamp the flat steel plate with the L-shaped notch of the anchor slider, and then screw the bolt's screw into the threaded hole of the vertical plate of the angle steel end plate; S4: Use bolts to fix the two ends of the compression rod to the two long side plates of the test mold respectively, and the height of the compression rod shall not exceed the thickness of the protective layer of the concrete to be poured; S5: Apply external force to all anchoring sliders at both ends of the test mold at the same time. After being stressed, the anchoring sliders slide toward both ends along the full-thread bolts, thereby driving the fiber mesh cloth to be tensioned toward both ends. When the prestress in the fiber mesh cloth reaches the design value, tighten the nuts on the full-thread bolts to press against the anchoring sliders to prevent the anchoring sliders from moving back due to the prestress of the fiber mesh cloth after the external force is removed.
[0007] S6: Place ordinary bidirectional steel mesh, pour concrete, tamp and vibrate, and after curing to the designed strength, remove the test mold to form a prestressed fiber mesh reinforced reinforced concrete precast slab.
[0008] Furthermore, in S1, there are at least two rows of threaded holes on the vertical plate of the angle steel end plate, at least one row of threaded holes is completely aligned with the bolt holes of the short side mold of the test mold, and at least another row of threaded holes is completely aligned with the bolt holes of the anchoring slider, ensuring that the angle steel end plate can be fixed to the short side mold of the test mold and the anchoring slider at the same time.
[0009] Furthermore, in S2, before winding the fiber mesh cloth, a long thin aluminum plate is prepared in advance, and then folded along the longer center line, and resin glue is applied to the upper and lower surfaces within the angle of the aluminum plate, and the two ends of the fiber mesh cloth are placed in the angle of the thin aluminum plate and pressed tightly, and then resin glue is applied to the upper surface of the outside of the aluminum plate, and a flat steel plate is placed on the upper surface of the outside of the aluminum plate, and then the fiber mesh cloth is wrapped around the flat steel plate for 3-5 turns.
[0010] Further, in S3, the hexagonal head of the nut and the full-thread bolt are located on the same side of the anchoring slider.
[0011] Furthermore, in S5, before applying external force to the anchoring slider, two rigid connectors can be made in advance, one end of the connector can be matched and tightened with all the anchoring sliders on the same side, and the other end of the connector can be matched and connected with the jack; then the jack can be placed in the middle of the test mold, and the end of the jack can be connected to the anchoring slider on the same side through the rigid connector; finally, the jack can be used to apply external force to the anchoring slider, and the anchoring slider slides toward both ends along the full-thread bolts fixed on the angle steel side plate, thereby driving the fiber mesh cloth to be tensioned toward both ends.
[0012] Furthermore, the bottom upper surface of the angle steel end plate and the bottom surface of the pressure rod are smooth and have no edges or corners to prevent scratches and damage to the fiber mesh cloth.
[0013] Furthermore, the fiber mesh cloth can be a fiber mesh cloth with a grid, or a fiber cloth, the fiber can be one or more of glass fiber, carbon fiber, aramid fiber or basalt fiber, and the tensile strength of the fiber is not less than 1500 MPa.
[0014] Furthermore, the side molds, bottom molds and pressure rods of the test mold all have great rigidity and deform very little after being subjected to force.
[0015] The beneficial effects of the processing technology of prestressed fiber mesh cloth reinforced reinforced concrete precast panels provided by the present invention are: the fiber mesh cloth arranged at the bottom of the reinforced concrete precast panels can bear force together with ordinary steel bars and resist external loads together, so it can improve the bidirectional bending stiffness and bending bearing capacity of the precast panels to a certain extent, and can reduce the bidirectional cracks of the precast panels to a certain extent; by applying prestress in the fiber mesh cloth, the fiber mesh cloth is subjected to force in advance in the concrete structure, thereby increasing the bending stiffness in the direction of prestress application. The pre-tension of the fiber mesh cloth can generate a certain pre-compression stress inside the concrete, which can offset the tensile stress of the concrete caused by external loads, thereby effectively delaying or reducing the generation of concrete cracks and improving the crack resistance of the structure; the application of pre-tension can constrain the shrinkage and creep of the concrete, reducing the resulting shrinkage cracks and long-term deformation cracks. This helps to improve the service life of the structure; by setting angle steel pads at both ends of the prestressed fiber mesh cloth reinforced reinforced concrete precast slab, it can effectively prevent the fiber mesh from shear damage due to local pressure, and after the trial mold is removed, it can cooperate with the full-thread bolts and anchor sliders to effectively anchor the two ends of the prestressed fiber mesh cloth. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 This is a schematic diagram of the structure of the prestressed fiber mesh cloth reinforced reinforced concrete precast slab provided by the present invention; Figure 2 A schematic diagram of the coordination of the fiber mesh cloth and the aluminum plate in the processing technology of the prestressed fiber mesh cloth reinforced reinforced concrete prefabricated plate provided by the present invention; Figure 3 A three-dimensional schematic diagram of various components before concrete pouring in the processing technology of the prestressed fiber mesh cloth reinforced reinforced concrete precast slab provided by the present invention Figure 1 ; Figure 4 A top view of various components before concrete pouring in the processing technology of the prestressed fiber mesh cloth reinforced reinforced concrete precast slab provided by the present invention; Figure 5 A three-dimensional schematic diagram of the position of the end parts in the processing technology of the prestressed fiber mesh cloth reinforced reinforced concrete prefabricated slab provided by the present invention (without the reinforcement); Figure 6 A three-dimensional cross-sectional view showing the position of the end parts in the processing technology of the prestressed fiber mesh cloth reinforced reinforced concrete prefabricated slab provided by the present invention (without the reinforcement); Description of reference numerals: 1. Fiber mesh cloth; 2. Concrete; 3. Ordinary bidirectional steel mesh; 4. Aluminum plate; 5. Flat steel plate; 6. Long side plate of test mold; 7. Short side plate of test mold; 8. Angle steel end plate; 9. Compression rod; 10. Full-thread bolt; 11. Anchor slider; 12. Bolt. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.
[0018] It should be noted that the main idea of the present invention is that the fiber mesh cloth 1 arranged at the bottom of the reinforced concrete precast slab can bear force together with the ordinary steel mesh 3 and resist external loads together, so it can improve the bidirectional bending stiffness and bending bearing capacity of the precast slab to a certain extent, and reduce the bidirectional cracks of the precast slab to a certain extent; by applying prestress in the fiber mesh cloth 1, the fiber mesh cloth 1 is subjected to force in advance in the concrete structure, thereby increasing the bending stiffness in the direction of prestress application. The pre-tension of the fiber mesh cloth 1 can generate a certain pre-compression stress inside the concrete, which can offset the tensile stress of the concrete 2 caused by the external load, thereby effectively delaying or reducing the generation of cracks in the concrete 2 and improving the crack resistance of the structure; the application of pre-tension can constrain the shrinkage and creep of the concrete 2, reducing the resulting shrinkage cracks and long-term deformation cracks. This helps to improve the service life of the structure; by arranging angle steel pads 8 at both ends of the prestressed fiber mesh cloth reinforced reinforced concrete precast slab, it can effectively prevent the fiber mesh 1 from shear damage due to local pressure, and after the trial mold is removed, it can cooperate with the full-thread bolts 10 and the anchoring slider 11 to effectively anchor the two ends of the prestressed fiber mesh cloth 1.
[0019] After introducing the basic principle of the present invention, various non-limiting embodiments of the present invention are described in detail below. The number of any element in the drawings is for illustration and not for limitation, and any naming is only for distinction and does not have any limiting meaning.
[0020] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.
[0021] Embodiments of the prestressed fiber mesh cloth reinforced reinforced concrete prefabricated slab provided by the present invention: like Figure 1 , Figure 3 and Figure 5As shown, the prestressed fiber mesh cloth reinforced reinforced concrete precast plate includes an ordinary bidirectional steel mesh 3 and concrete 2, a prestressed fiber mesh cloth 1 cast on the bottom surface of the plate, and the two short sides of the fiber mesh cloth 1 are respectively wrapped around the long flat steel plate 5, and the flat steel plate 5 wrapped with the fiber mesh cloth 1 is stuck between the L-shaped notch with the anchor slider 11 and the horizontal plate of the long angle steel end plate 8, and the anchor slider 11 is fixed to the vertical plate of the angle steel end plate 8 by a full-thread bolt 10 and a nut, and a pressure rod 9 is provided at the end of the horizontal plate of the angle steel end plate 8, and the pressure rod 9 is tightly attached to the fiber mesh cloth 1 and parallel to the length direction of the angle steel end plate 8. The angle steel end plate 8, the anchor slider 11, the full-thread bolt 10, the pressure rod 9, the fiber mesh cloth 1 and the ordinary steel mesh 3 are cast into a whole by casting the cast-in-place concrete 1.
[0022] Specifically, the formation process of the prestressed fiber mesh cloth reinforced reinforced concrete precast panel is shown in the following prestressed fiber mesh cloth reinforced reinforced concrete precast panel processing technology.
[0023] Embodiments of the processing technology of prestressed fiber mesh cloth reinforced reinforced concrete prefabricated panels provided by the present invention: The processing technology of prestressed fiber mesh reinforced reinforced concrete precast panels includes the following steps: In order to solve the above problems, the processing technology of prestressed fiber mesh cloth reinforced reinforced concrete prefabricated slab provided by the present invention adopts the following technical solutions: The processing technology of prestressed fiber mesh cloth reinforced reinforced concrete prefabricated slab includes the following steps: S1: Assemble the bottom mold and the long side plate 6 and the short side plate 7 of the prestressed fiber mesh reinforced reinforced concrete precast slab to form a test mold, place the horizontal plates of the two angle steel end plates 8 at the two ends of the inside of the test mold, and ensure that the vertical plates of the angle steel end plates 8 are close to the short side plates 7 of the test mold, and then use full-thread bolts 10 to fix the angle steel end plates 8 and the short side plates 7 of the test mold; S2: Horizontally spread the fiber mesh cloth 1 on the upper surface of the test mold bottom plate, wrap the two ends of the fiber mesh cloth 1 around the flat steel plate 5 respectively, and then place the flat steel plate 5 wrapped with the fiber mesh cloth 1 on the bottom plate of the angle steel end plate 8, and keep the flat steel plate 5 parallel to the angle steel end plate 8; S3: insert the full-thread bolt 10 with the nut into the bolt hole of the anchor slider 11, place the anchor slider 11 with the full-thread bolt 10 on the flat steel plate 5, and use the L-shaped notch of the anchor slider 11 to clamp the flat steel plate 5, and then screw the screw of the full-thread bolt 10 into the threaded hole of the vertical plate of the angle steel end plate 8; S4: Use bolts 12 to fix the two ends of the pressure rod 9 to the long side plates 6 of the test mold, and the height of the pressure rod 9 does not exceed the thickness of the protective layer of the concrete to be poured; S5: Apply external force to all the anchoring sliders 11 at both ends of the test mold at the same time. After being stressed, the anchoring sliders 11 slide toward both ends along the full-thread bolts 10, thereby driving the fiber mesh cloth 1 to be tensioned toward both ends. When the prestress in the fiber mesh cloth 1 reaches the design value, tighten the nuts on the full-thread bolts 10 to press against the anchoring sliders 11 to prevent the anchoring sliders 11 from moving back due to the prestress of the fiber mesh cloth 1 after the external force is removed.
[0024] S6: Place ordinary bidirectional steel mesh 3, pour concrete 2, tamp and vibrate, and after curing to the designed strength, remove the test mold to form a prestressed fiber mesh cloth reinforced reinforced concrete precast slab.
[0025] In S1 of this embodiment, there are two rows of threaded holes on the vertical plate of the angle steel end plate 8, one row of threaded holes is completely aligned with the bolt holes of the short side plate 7 of the test mold, and the other row of threaded holes is completely aligned with the bolt holes of the anchoring slider 11, ensuring that the angle steel end plate 8 can be fixed to the short side plate 7 of the test mold and the anchoring slider 11 at the same time.
[0026] In S2 of the present embodiment, before winding the fiber mesh cloth 1, a long thin aluminum plate 4 is prepared in advance, and then folded along the longer center line, and resin glue is applied to the upper and lower surfaces within the angle of the aluminum plate, and the two ends of the fiber mesh cloth 1 are placed in the angle of the thin aluminum plate 4 and pressed tightly, and then resin glue is applied to the upper surface of the outside of the aluminum plate, and the flat steel plate 5 is placed on the upper surface of the outside of the aluminum plate, and then the fiber mesh cloth 1 is wrapped around the flat steel plate 5 for 3 turns.
[0027] In S3 of this embodiment, the nut and the hexagonal head of the full-thread bolt 10 are located on the same side of the anchoring slider 11; In S5 of the present embodiment, before applying external force to the anchoring slider 11, two rigid connecting parts (not shown in the figure) are prepared in advance, one end of the connecting part is matched and tightened with all the anchoring sliders 11 on the same side, and the other end of the connecting part is matched and connected with a jack (not shown in the figure); then the jack is placed in the middle of the test mold, and the end of the jack is connected to the anchoring slider 11 on the same side through a rigid connecting part; finally, external force is applied to the anchoring slider 11 through the jack, and the anchoring slider 11 slides toward both ends along the full-thread bolts 10 fixed on the side plates of the angle steel end plate 8, thereby driving the fiber mesh cloth 1 to be tensioned toward both ends.
[0028] In this embodiment, the bottom upper surface of the angle steel end plate 8 and the bottom surface of the pressure rod 9 are both smooth and have no edges or corners to prevent the fiber mesh cloth 1 from being scratched and damaged.
[0029] In this embodiment, the fiber mesh cloth 1 is a fiber mesh cloth with a grid, and the fibers are glass fibers.
[0030] In this embodiment, the long side plates 6 of the trial mold, the short side plates 7 of the trial mold, the bottom mold, and the pressure rod 9 are all made of steel and have great rigidity.
[0031] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and the like, which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.
[0032] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.
Claims
1. Prestressed fiber mesh reinforced reinforced concrete prefabricated panel, comprising ordinary steel mesh and concrete, characterized in that: Also includes: The prestressed fiber mesh cloth is cast on the bottom surface of the plate, and the two short sides of the fiber mesh cloth are respectively wrapped on the long flat steel plate. The flat steel plate wrapped with the fiber mesh cloth is clamped between the L-shaped notch with the anchor slider and the horizontal plate of the long angle steel end plate. The anchor slider is fixed to the vertical plate of the angle steel end plate by full-thread bolts and nuts. A pressure rod is provided at the end of the horizontal plate of the angle steel end plate. The pressure rod is tightly attached to the fiber mesh cloth and parallel to the length direction of the angle steel end plate. The angle steel end plate, anchor slider, full-thread bolts, pressure rod, fiber mesh cloth and ordinary steel mesh are cast as a whole by cast-in-place concrete.
2. Prestressed fiber mesh cloth reinforced reinforced concrete prefabricated board processing technology, characterized in that: The steps include: S1: Assemble the bottom form and four-side form of the prestressed fiber mesh reinforced reinforced concrete precast slab to form a test mold, place the horizontal plates of the two angle steel end plates at the two ends of the test mold, and ensure that the vertical plates of the angle steel end plates are close to the short side form of the test mold, and then use full-thread bolts to fix the angle steel end plates to the short side form of the test mold; S2: Horizontally spread the fiber mesh cloth on the upper surface of the test mold bottom plate, wrap the two ends of the fiber mesh cloth around the flat steel plate respectively, and then place the flat steel plate wrapped with the fiber mesh cloth on the bottom plate of the angle steel end plate, keeping the flat steel plate parallel to the angle steel end plate; S3: Insert the full-thread bolt with nut into the bolt hole of the anchor slider, place the anchor slider with the full-thread bolt on the flat steel plate, and clamp the flat steel plate with the L-shaped notch of the anchor slider, and then screw the bolt's screw into the threaded hole of the vertical plate of the angle steel end plate; S4: Use bolts to fix the two ends of the compression rod to the two long side plates of the test mold respectively, and the height of the compression rod shall not exceed the thickness of the protective layer of the concrete to be poured; S5: Apply external force to all anchoring sliders at both ends of the test mold at the same time. After the anchoring sliders are subjected to force, they slide toward both ends along the full-thread bolts, thereby driving the fiber mesh cloth to be tensioned toward both ends. When the prestress in the fiber mesh cloth reaches the design value, tighten the nuts on the full-thread bolts to press against the anchoring sliders to prevent the anchoring sliders from moving back due to the prestress of the fiber mesh cloth after the external force is removed. S6: Place ordinary bidirectional steel mesh, pour concrete, tamp and vibrate, and after curing to the designed strength, remove the test mold to form a prestressed fiber mesh reinforced reinforced concrete precast slab.
3. The process for processing prestressed fiber mesh reinforced reinforced concrete prefabricated panels according to claim 2 is characterized in that: The method comprises the following steps: in S1, there are at least two rows of threaded holes on the vertical plate of the angle steel end plate, at least one row of threaded holes is completely aligned with the bolt holes of the short side mold of the test mold, and at least another row of threaded holes is completely aligned with the bolt holes of the anchoring slider, so as to ensure that the angle steel end plate can be fixed to the short side mold of the test mold and the anchoring slider at the same time.
4. The process for processing prestressed fiber mesh reinforced reinforced concrete prefabricated panels according to claim 2 is characterized in that: The method comprises the following steps: in S2, before winding the fiber mesh cloth, a long thin aluminum plate is prepared in advance, which is then folded in half along the longer center line, and resin glue is applied to the upper and lower surfaces within the angle of the aluminum plate, and both ends of the fiber mesh cloth are placed within the angle of the thin aluminum plate and pressed tightly, and then resin glue is applied to the upper surface of the outside of the aluminum plate, a flat steel plate is placed on the upper surface of the outside of the aluminum plate, and then the fiber mesh cloth is wrapped around the flat steel plate for 3-5 turns.
5. The process for processing prestressed fiber mesh reinforced reinforced concrete prefabricated panels according to claim 2, characterized in that: The method comprises the following steps: in S3, the hexagonal heads of the nut and the full-thread bolt are located on the same side of the anchoring slider.
6. The process for processing prestressed fiber mesh reinforced reinforced concrete prefabricated panels according to claim 2, characterized in that: The method comprises the following steps: in S5, before applying external force to the anchoring slider, two rigid connectors can be prepared in advance, one end of the connector can be matched and tightened with all the anchoring sliders on the same side, and the other end of the connector can be matched and connected with the jack; then the jack can be placed in the middle of the test mold, and the end of the jack can be connected to the anchoring slider on the same side through the rigid connector; finally, the jack can be used to start applying external force to the anchoring slider, and the anchoring slider slides toward both ends along the full-thread bolts fixed on the angle steel side plate, thereby driving the fiber mesh cloth to be tensioned toward both ends.
7. The process for processing prestressed fiber mesh reinforced reinforced concrete prefabricated panels according to claim 2 or 3, characterized in that: The bottom upper surface of the angle steel end plate and the bottom surface of the pressure rod are both smooth and have no edges or corners to prevent the fiber mesh cloth from being scratched and damaged.
8. The process for processing prestressed fiber mesh reinforced reinforced concrete prefabricated panels according to claim 2 or 3, characterized in that: The fiber mesh cloth can be a fiber mesh cloth with a grid, or a fiber cloth, the fiber can be one or more of glass fiber, carbon fiber, aramid fiber or basalt fiber, and the tensile strength of the fiber is not less than 1500 MPa.
9. The process for processing prestressed fiber mesh cloth reinforced reinforced concrete prefabricated panels according to claim 2 or 3, characterized in that: The side mold, bottom mold and pressure rod of the test mold all have great rigidity and have little deformation after being subjected to force.
Citation Information
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