Reinforcing structure and reinforcing method of composite floor slab

Abstract

The invention discloses a composite floor slab reinforcing structure and a composite floor slab reinforcing method, a composite floor slab comprises at least two floor slabs which are arranged in an overlapped mode, and the reinforcing structure comprises at least one penetrating hole which penetrates through the composite floor slab in the thickness direction of the composite floor slab; and each inhaul cable is arranged in the corresponding through hole in a penetrating mode, and the two ends of each inhaul cable extend out of the end portions of the two sides of the corresponding through hole. Wherein each inhaul cable is formed by stacking a plurality of fiber cloth strips together and then screwing the fiber cloth strips together in a screwing mode, each inhaul cable and the inner wall of the corresponding penetrating hole are bonded together through structural adhesive, and the fiber cloth strips in the portion, located in the penetrating hole, of each inhaul cable are also bonded together through the structural adhesive; in addition, the two ends of each inhaul cable are attached and fixed to the surface of the floor on the corresponding side in the mode that the ends of the fiber cloth strips are scattered mutually. The reinforcing structure has the advantages of being simple in raw material, environmentally friendly, capable of saving energy, good in reinforcing effect and high in overall stability.

Description

Technical Field

[0001] The present invention relates to the technical field of building-related construction, and in particular to a reinforcement structure of a composite floor slab and a reinforcement method of a composite floor slab. Background Art

[0002] In the field of construction engineering technology, composite floor is a common building structure, which is composed of two layers of boards connected by adhesive materials, and has the advantages of high strength, light weight, and convenient construction. However, due to improper construction quality control or the influence of environmental factors, composite floor may have hollowing phenomenon during use, that is, the upper and lower layers are not well connected or partially hollowed out, which will lead to a decrease in the structural bearing capacity and limited use function.

[0003] In order to solve the hollowing phenomenon of composite floor slabs, the existing technical solutions mainly adopt chemical grouting method or physical reinforcement method. The chemical grouting method is to inject chemical slurry into the hole after opening the floor slab, so that the slurry penetrates into the interior of the floor slab, thereby achieving the effect of filling the hollowing and enhancing the bonding. The physical reinforcement method is to stick steel plates or steel bars on the surface of the floor slab to improve the strength and stability of the floor slab.

[0004] The chemical grouting method requires strict control of the injection volume and flow direction of the slurry to avoid problems such as uneven grouting or excessive grouting. Although the physical reinforcement method can improve the strength of the floor slab, it will increase the weight and volume of the floor slab, and will also affect the aesthetics and use function of the floor slab. In addition, both methods require a large number of construction workers and equipment, with high costs and long construction periods. Therefore, the existing technical solutions have certain limitations in practical applications, and it is necessary to find more effective and economical reinforcement structures and reinforcement methods. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the composite floor slab reinforced by the chemical grouting method and the physical reinforcement method in the prior art has great limitations and poor reinforcement effect.

[0006] In order to solve the above technical problems, the embodiments of the present invention disclose a reinforcement structure of a composite floor slab, wherein the composite floor slab comprises at least two overlapping floor slabs, and the reinforcement structure comprises:

[0007] at least one through-hole penetrating the composite floor slab in a thickness direction of the composite floor slab;

[0008] At least one cable, each cable is inserted into a corresponding through hole, and both ends extend out of the two side ends of the through hole;

[0009] Each cable is formed by stacking a number of fiber cloth strips and then twisting them together. Each cable is bonded to the inner wall of the corresponding perforation by structural adhesive, and the fiber cloth strips in the portion of each cable located in the perforation are also bonded together by structural adhesive; and both ends of each cable are respectively adhered and fixed to the floor surface on the corresponding side in a manner that the ends of the fiber cloth strips are dispersed from each other.

[0010] By adopting the above technical scheme, the present invention provides a reinforcement structure for a composite floor. Compared with the traditional chemical reinforcement method or physical reinforcement method, the construction steps of the reinforcement structure are simpler, and it has the advantages of simple raw materials, environmental protection and energy saving, and good reinforcement effect. The tension of the cable can be evenly distributed inside the floor to avoid local stress concentration, and the end is dispersed by the remaining fiber cloth strips, thereby improving the overall stability of the structure, dispersing the stress and tension on the cable, avoiding stress concentration, and thus improving the reinforcement effect of the cable on the composite floor, and having high shear resistance. The overall stability of the composite floor reinforcement structure is relatively high. In addition, each cable is bonded to the inner wall of the perforation by structural adhesive, and the fiber cloth strips of the cable located in the perforation are also bonded together by structural adhesive, with high connection strength, better stress resistance and reinforcement effect.

[0011] Further preferably, a fiber cloth fixing device is provided at one end of the perforation, and the fiber cloth fixing device includes an integrally formed connecting end and a fixing plate; wherein

[0012] The connecting end is cylindrical, the outer diameter of which matches the inner diameter of the through hole, and a through hole extending parallel to the through hole is provided inside;

[0013] The fixing plate is disposed around the end of the connection end away from the composite floor slab, and includes a joint portion and a fixing portion arranged in sequence along the radial direction, and the fixing portion is disposed around the joint portion and includes a plurality of fixing holes arranged along the circumferential direction; and

[0014] The connecting end extends into one end of the through hole, the outer wall fits with the inner wall of the through hole, and the fixing part abuts against the floor surface on the side around the through hole. The corresponding end of the cable extends out of one end of the through hole, and the end of each fiber cloth strip bypasses the joint and penetrates into the corresponding fixing hole, and is flatly fixed on the floor surface on the corresponding side of the composite floor in a dispersed manner.

[0015] Further preferably, a plurality of fixing holes are arranged on the fixing portion in a manner uniformly distributed along the circumferential direction; and

[0016] The ends of the fiber cloth strips at both ends of the cable are uniformly spaced around the through holes and are dispersedly adhered to and fixed on the floor surface on the corresponding side.

[0017] Further preferably, a plurality of perforations are provided at intervals on the composite floor slab, and each perforation is filled with a cable; wherein the apertures of the plurality of perforations are the same, and the aperture of each perforation is within the range of 10 to 80 mm;

[0018] The thickness of each fiber cloth strip is in the range of 0.1 mm to 0.2 mm, and the cable is formed by stacking and twisting a plurality of fiber cloth strips; and

[0019] The diameter of each perforation is larger than the total thickness of all fiber cloth strips of the cable filled therein, and the size difference between the two is within the range of 3-5 mm.

[0020] Further preferably, each fiber cloth strip is formed by combining fiber material, matrix material, and reinforcing agent; wherein

[0021] The fiber material includes any one of carbon fiber, glass fiber, polyimide fiber, silicon carbide fiber, ceramic fiber, and metal fiber;

[0022] The matrix material is applied to the outer layer of the fiber material as a binder or a protective layer, and includes one of epoxy resin, acrylic resin, polyurethane, and phenolic resin;

[0023] The reinforcing agent is coated on the periphery of the fiber cloth strip and includes at least one of an anti-ultraviolet agent and an antioxidant.

[0024] The embodiment of the present invention further discloses a reinforcement method for a composite floor slab, the reinforcement method is used to form a reinforcement structure of the composite floor slab, the method comprising:

[0025] S1. A perforation is provided on the composite floor slab, wherein the perforation penetrates the composite floor slab along the thickness direction of the composite floor slab;

[0026] S2. Stacking a plurality of fiber cloth strips together and then twisting them together to form a cable, passing the cable through the composite floor slab along the perforation, and winding the plurality of fiber cloths of the cable in the perforation with each other, and extending both ends of the cable out of the two side ends of the perforation; wherein the length of the cable is greater than the thickness of the composite floor slab, and the radial cross-sectional area of ​​the cable is equal to or smaller than the cross-sectional area of ​​the perforation;

[0027] S3, pulling the two ends of the cable on both sides of the composite floor slab and applying tension to the cable along the length direction of the cable;

[0028] S4, pouring structural adhesive into the perforation from at least one end of the perforation so that the cable is bonded to the inner wall of the perforation, and releasing the tension after the structural adhesive solidifies;

[0029] S5, attaching and fixing the two ends of the cable to the floor surface on the corresponding side in a manner that the ends of the fiber cloth strips are dispersed from each other;

[0030] S6. Inspect and accept the composite floor slabs.

[0031] By adopting the above technical scheme, the present invention discloses a new reinforcement method for composite floor slabs. After perforating the composite floor slabs, a plurality of fiber cloth strips are twisted into cables and then perforated for reinforcement. Compared with the traditional reinforcement method (such as adding concrete beams or steel beams), the construction steps are simpler and no large-scale destructive construction is required. It has the advantages of good filling effect for perforations and better reinforcement effect on composite floor slabs. And because the cables are twisted from fiber cloth strips, they have the advantages of simple raw materials and good reinforcement effect. The material cost required for the fiber cloth strip cable reinforcement scheme is relatively low, the construction efficiency is high, and it has the advantages of environmental protection and energy saving. This reinforcement scheme is suitable for perforations of different sizes and shapes, and can flexibly respond to various reinforcement needs.

[0032] Furthermore, fiber cloth strips are used to take advantage of their good ductility and are cleverly applied in the field of floor reinforcement. In combination with structural adhesive, the bonding effect between the cables in the perforations and the inner wall of the perforations is further improved. Fiber cloth strips are light and high-strength, which limits the weight increase of the reinforced structure while significantly improving the bearing capacity of the structure. Fiber materials usually have good corrosion resistance and can maintain stable performance for a long time in harsh environments such as moisture and corrosion.

[0033] What is particularly important is that in the reinforcement method disclosed in the present application, it is necessary to apply tension to the cable during the reinforcement process, and the reinforcement effect of the composite floor is achieved by applying the tension. In combination with the structural adhesive, the bonding strength can be enhanced, the durability and stability are improved, and the advantages of the fiber cloth strips are further enhanced. In addition, the structural adhesive combined with the cable can improve the overall bearing capacity of the composite floor, and the two ends of the cable are respectively adhered and fixed to the floor surface on the corresponding side in a manner that the ends of each fiber cloth strip are dispersed from each other. The tension of the cable can be evenly distributed inside the floor to avoid local stress concentration, and the end is dispersed by the remaining fiber cloth strips, thereby improving the overall stability of the structure, dispersing the stress and tension on the cable, and thereby improving the reinforcement effect of the cable on the composite floor.

[0034] Further preferably, when the two ends of the cable are pulled on both sides of the composite floor, tension is applied to the corresponding ends of each fiber cloth strip at each end of the cable, and the direction of the tension is consistent with the length direction of the cable and is toward the side away from the composite floor; and while the tension is applied to the cable, a torsional force around the length direction is also applied to at least one end of the cable.

[0035] By adopting the above technical solution, when tension is applied to each fiber cloth strip at each end of the cable, the tension will be evenly transmitted to the composite floor, thereby enhancing its bearing capacity and helping to disperse the stress inside the floor to a larger area, improving the overall stability of the structure. The tension of the cable can significantly increase the stiffness of the composite floor, reducing its deformation when subjected to load. Furthermore, by pulling the cable on both sides of the composite floor at the same time, it can ensure that the stress distribution inside the floor is more uniform, avoid stress concentration, and extend the life of the structure. Furthermore, applying a torsional force can improve the shear resistance of the composite floor, and the cable under the action of the torsional force can better form a whole with the structure inside the floor, improving the overall stability of the structure, and the application of the torsional force can optimize the stress state inside the composite floor. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of a composite floor slab having a plurality of through holes in the composite floor slab reinforcement structure provided by an embodiment of the present invention;

[0037] Figure 2 A cross-sectional view of a composite floor in a reinforced structure of a composite floor provided by an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of a reinforcement structure of a composite floor provided in an embodiment of the present invention in which cables are inserted through the through holes of the composite floor;

[0039] Figure 4 Another schematic diagram of a reinforcement structure of a composite floor provided in an embodiment of the present invention in which cables are inserted through the through holes of the composite floor;

[0040] Figure 5 A schematic diagram of a cable in a reinforcement structure of a composite floor provided by an embodiment of the present invention;

[0041] Figure 6 Another schematic diagram of the structure of the cable in the reinforcement structure of the composite floor provided by the embodiment of the present invention;

[0042] Figure 7 A schematic structural diagram of a fiber cloth fixing device in a reinforcement structure of a composite floor provided by an embodiment of the present invention;

[0043] Figure 8 A method flow chart of a reinforcement method for a composite floor provided by an embodiment of the present invention;

[0044] Fig. 9 A flow chart of a method for drilling holes in a composite floor slab in a method for reinforcing a composite floor slab provided in an embodiment of the present invention.

[0045] Description of reference numerals:

[0046] 100. Composite floor slab;

[0047] 110. Perforation;

[0048] 200, cable;

[0049] 210, fiber cloth strips;

[0050] 300, fiber cloth fixing device;

[0051] 310, connection terminal;

[0052] 311, through hole;

[0053] 320, fixed plate;

[0054] 321, fixing hole;

[0055] 400. Prestressed tensioning device. DETAILED DESCRIPTION

[0056] As mentioned in the background of the present invention, as a common building structure in the field of construction engineering, composite floor slabs often have poor firmness during use, and are prone to hollowing. In the prior art, the solution to the hollowing phenomenon of composite floor slabs is generally to reinforce them by chemical grouting or physical reinforcement, but both have limitations. For example, when using the chemical grouting method, it is necessary to strictly control the injection amount and flow direction of the slurry, but the greater limitation of using the chemical grouting method is that it can only fill the hollows between the composite floor slabs, and it is difficult to further reinforce the composite floor slabs, and the use of the chemical grouting method is more stringent for construction requirements. When using the physical reinforcement method, the weight and volume of the floor slabs are generally increased, and the construction difficulty is relatively large, and the technical requirements are relatively high and a large number of construction personnel and equipment are required. Therefore, the floor slab structure reinforced by the chemical grouting method and the physical reinforcement method in the prior art has the problem of being relatively large in limitations and having defects.

[0057] The present invention provides a new reinforcement structure and method for a composite floor. The reinforcement method is to drill holes in the composite floor, and then fill the holes with cables twisted from fiber cloth strips. After the holes are drilled, the cables are also subjected to prestress and rotational force, and are reinforced by structural adhesive. Finally, the ends of the fiber cloth strips are further fixed on both sides of the composite floor, and the advantages of good ductility and high strength of the fiber cloth strips are utilized, and they are twisted into a cable shape to have higher strength. After the holes are fixed and reinforced by structural adhesive, the hollowing and poor structural strength problems of the composite floor are solved. The fiber cloth strips are then flattened and reinforced at the ends, which basically does not change the structure of the composite floor, and has the advantages of low cost, stable structure and wide application range.

[0058] Each fiber cloth strip used in the reinforcement structure disclosed in this embodiment is formed by combining a fiber material, a matrix material and a reinforcing agent, wherein the fiber material includes any one of carbon fiber, glass fiber, polyimide fiber, silicon carbide fiber, ceramic fiber and metal fiber. The matrix material is coated on the outer layer of the fiber material as a binder or a protective layer, and includes one of epoxy resin, acrylic resin, polyurethane and phenolic resin. The reinforcing agent is coated on the periphery of the fiber cloth strip, and includes at least one of an anti-ultraviolet agent and an antioxidant. For example, the fiber material is carbon fiber, the matrix material is acrylic resin, and the reinforcing agent is an anti-ultraviolet agent; or the fiber material is glass fiber, the matrix material is polyurethane, and the reinforcing agent is an anti-ultraviolet agent, etc.

[0059] Further, each fiber cloth strip is made of a carbon fiber cloth strip as an example for explanation. The carbon fiber is made of raw materials such as polyacrylonitrile (PAN) fiber, asphalt-based fiber or viscose-based fiber by high-temperature carbonization, and has high strength and high modulus characteristics. The matrix material is a polymer such as epoxy resin, which serves as an adhesive and protective layer to enhance the toughness and durability of the composite material. The reinforcing agent is an anti-ultraviolet agent, and the elastic modulus disclosed in this embodiment is about 230-300Gpa, and the elongation is 1.5%-2.5%. Each carbon fiber cloth uses a single-layer cloth with a thickness in the range of 0.1mm~0.3mm, for example, a single-layer cloth of 0.1mm, 0.167mm or 0.3mm is selected, and the width of the carbon fiber cloth is preferably set in the range of 100-300mm, and the density is 1.8g / cm³. Those skilled in the art can also adjust other parameters of the carbon fiber cloth according to actual needs, and this embodiment does not make specific restrictions on this.

[0060] Furthermore, it should be noted that the composite floor slab may be a wooden composite floor slab, a reinforced concrete composite floor slab, a fiber cement board composite floor slab, a floor slab of other structures or materials, etc., and this embodiment does not specifically limit this.

[0061] Next, the reinforcement structure of the composite floor slab disclosed in the present invention is explained in more detail:

[0062] The implementation method of this embodiment discloses a reinforcement structure of a composite floor slab, see Figure 1 as well as Figure 2 The composite floor 100 includes at least two overlapping floors. In this embodiment, two floors are used as an example for description, but those skilled in the art should understand that the method can also be applied to composite floors with three floors, composite floors with four floors or even composite floors with more floors, and this embodiment does not make a sole limitation to this.

[0063] The reinforcement structure includes: at least one through hole 110 penetrating the composite floor 100 along the thickness direction of the composite floor 100, see Figure 1 and Figure 2In a preferred implementation method disclosed in this embodiment, a plurality of through holes 110 are arranged at intervals on the composite floor 100, and when the through holes 110 are opened on the composite floor 100, in this embodiment, more through holes 110 are preferably arranged on the peripheral side of the composite floor 100 near the edge, and fewer through holes 110 are arranged in the middle of the composite floor 100, so as to optimize the structural performance of the composite floor 100, give priority to the reinforcement effect of the edge of the composite floor 100, and improve the convenience of construction.

[0064] See also Figure 3 and Figure 4 The reinforcement structure also includes at least one cable 200, each cable 200 is arranged to pass through a corresponding through hole 110, and both ends extend out of the two side ends of the through hole 110. Specifically, the number of cables 200 in this embodiment corresponds to the number of through holes 110.

[0065] Each cable 200 is formed by stacking a number of fiber cloth strips 210 and then twisting them together, and the two ends of each cable 200 are respectively attached to and fixed on the floor surface of the corresponding side in a manner that the ends of each fiber cloth strip 210 are dispersed from each other. Figure 5 and Figure 6 For example, each cable 200 is provided with four fiber cloth strips 210. The four fiber cloth strips 210 are stacked together and then twisted together to form the cable 200. Then, the cable 200 is turned toward the side close to the floor surface at both ends of the through hole 110 and is attached to the floor surface on the corresponding side in a dispersed manner. The direction of each fiber cloth strip 210 of the cable 200 when turned and attached to one side of the floor is as follows: Figure 5 As shown, during the flipping and pasting process, the fiber cloth strips 210 located on the upper surface of the composite floor 100 are flipped downward and laid flat and dispersedly bonded to the upper surface of the composite floor 100, and the fiber cloth strips 210 on the lower surface of the composite floor 100 are flipped upward and laid flat and dispersedly bonded to the lower surface of the composite floor 100. The schematic diagram of the dispersed flattened cables 200 is shown in FIG. Figure 6 shown.

[0066] More specifically, each cable 200 is bonded to the inner wall of the corresponding through hole 110 by structural adhesive, and each fiber cloth strip 210 in the portion of each cable 200 located in the through hole 110 is also bonded together by structural adhesive. For example, each cable 200 is composed of four fiber cloth strips 210, and the four fiber cloth strips 210 in the portion located in the through hole 110 are fixedly bonded together by structural adhesive, and each cable 200 is bonded to the inner wall of the corresponding through hole 110 by structural adhesive. Through such a connection method and structure, the connection strength between the cable 200 and the composite floor 100 is higher, and the connection strength of the fiber cloth strips 210 constituting the cable 200 is also higher.

[0067] A fiber cloth fixing device 300 is provided at one end of the through hole 110, see Figure 7 The fiber cloth fixing device 300 includes an integrally formed connection end 310 and a fixing plate 320. The connection end 310 is cylindrical, with an outer diameter adapted to the inner diameter of the through hole 110, and a through hole 311 extending parallel to the through hole 110 is provided inside. The fixing plate 320 is arranged around the end of the connection end 310 away from the composite floor 100, and includes a joint part and a fixing part arranged in sequence in the radial direction, and the fixing part is arranged around the joint part and includes a plurality of fixing holes 321 arranged in the circumferential direction. The number of fixing holes 321 on the fixing plate 320 matches the number of fiber cloth strips 210 of the cable 200. For example, when four fiber cloth strips 210 are provided, four fixing holes 321 are preferably provided, and when five fiber cloth strips 210 are provided, five fixing holes 321 are preferably provided, etc., which is not specifically limited in this embodiment. In this embodiment, the fixing holes 321 are preferably provided as a plurality of fan-shaped holes surrounding the connection end 310.

[0068] The connecting end 310 extends into one end of the through hole 110, the outer wall fits with the inner wall of the through hole 110, and the fixing portion abuts against the floor surface around the through hole 110. The corresponding end of the cable 200 extends out of one end of the through hole 110 through the through hole. The end of each fiber cloth strip 210 bypasses the joint and passes into the corresponding fixing hole 321, and is flatly fixed on the floor surface on the corresponding side of the composite floor 100 in a dispersed manner.

[0069] Furthermore, because one end of the fiber cloth fixing device 300 in this embodiment is fixed to the floor surface of one side of the composite floor 100, and the end of the fiber cloth strip 210 is fixed to the fiber cloth fixing device 300, it is possible to use the fiber cloth fixing device 300 to fix one end of the cable 200 to the floor surface of one side of the composite floor 100. For more details, see Figure 7The fiber cloth fixing device 300 disclosed in this embodiment includes an integrally formed connecting end 310 and a fixing plate 320. The connecting end 310 is set to be cylindrical. The outer diameter of the connecting end 310 is adapted to the inner diameter of the perforation. A through hole 311 extending parallel to the perforation 110 is opened inside the connecting end 310. The fiber cloth strip 210 can pass through the through hole 311 of the connecting end 310 and then be fixed on the fixing plate 320. The outer diameter of the fixing plate 320 is larger than the outer diameter of the connecting end 310. When the fiber cloth fixing device 300 is fixed, the connecting end 310 is provided with a cylindrical shape ... 110. The end 310 is penetrated inside the through hole 110. Since the outer diameter of the fixing disk 320 is larger than the outer diameter of the connecting end 310, and the end of the fiber cloth strip 210 is fixed on the fixing disk 320, when the other end of the fiber cloth strip 210 is pulled by the prestressing tensioning device 400 to apply prestress, the fixing disk 320 and the corresponding side of the composite floor slab 100 abut against each other and provide a reaction force to the cable 200 opposite to the tension provided by the prestressing tensioning device 400, so that the cable 200 located in the through hole 110 is tightened.

[0070] When the fiber cloth fixing device 300 is installed in the through hole 110, each fiber cloth strip 210 can be first passed through the through hole 311 of the connecting end 310, and then the end of the fiber cloth strip 210 is fixed to the fixing plate 320, for example, by winding, tying, clamping, etc., see Figure 7 The fixing plate 320 of the fiber cloth fixing device 300 disclosed in this embodiment is provided with a plurality of fixing holes 321. When fixing the cable 200, each fiber cloth strip 210 first passes through the through hole 110, then passes through the through hole 311 of the connecting end 310, and then is folded upward and passed through one of the fixing holes 321 of the fixing plate 320 for fixing. To improve the connection strength, the fiber cloth strip 210 can be wrapped several times after being folded upward and passed through the fixing hole 321, or it can be tied to the fixing hole 321 when wrapping, and the end should also extend out of the fixing hole 321 to prepare for subsequent fixing on the floor surface.

[0071] For example, the cable 200 includes four fiber cloth strips 210 and the fixing plate 320 is provided with four fixing holes 321. Each fiber cloth strip 210 first passes through the through hole 110 of the composite floor 100, then passes through the through hole 311 of the connecting end 310, and then folds upward and passes through the end of one of the fixing holes 321 of the fixing plate 320 for fixing. The fiber cloth strip 210 also extends outside the fixing hole 321. Then, the connecting end 310 is aligned with the through hole of the composite floor 100, and the cable 200 is pulled at the other end of the cable 200 to insert the connecting end 310 into the through hole 110. The fixing plate 320 is attached to and abuts against the floor surface around the through hole 110. It should be noted that the fixing method and means of the fiber cloth strip 210 passing through the through hole 110 and fixed to the end of the fixing plate 320 can be adjusted and designed by those skilled in the art according to actual needs, and this embodiment does not limit this. Furthermore, the process of the fiber cloth strip 210 passing through the through hole 110 and being fixed by the fiber cloth fixing device 300 is as follows: Figure 4 As shown, after removing the prestressed tensioning device 400, Figure 4 As shown in the middle right half, the fiber cloth strip 210 is then fixed and pasted on the floor surface.

[0072] Moreover, in the present embodiment, since part of the cable 200 near one end of the fiber cloth fixing device 300 is located in the through hole 311 of the connecting end 310, the cable 200 located in the through hole 311 has no direct contact with the inner wall surface of the through hole 110 on the composite floor 100, and the cable 200 located in the through hole 311 can be bonded to the inner wall portion of the through hole 311, and the outer wall portion of the connecting end 310 of the fiber cloth fixing device 300 can be bonded to the inner wall surface of the through hole by adhesive, or an external thread can be provided on the outer wall portion of the connecting end 310, and an internal thread can be provided on the inner wall portion of the through hole 110 for threaded connection. Those skilled in the art can make arrangements according to actual needs, and the present embodiment does not make any specific limitation on this.

[0073] The reinforcement structure of the composite slab provided in this embodiment has simpler construction steps than the traditional chemical reinforcement method or physical reinforcement method, and has the advantages of simple raw materials, environmental protection and energy saving, and good reinforcement effect. The tension of the cable 200 can be evenly distributed inside the floor slab to avoid local stress concentration, and the end is dispersed by the remaining fiber cloth strips 210 to improve the overall stability of the structure, disperse the stress and tension on the cable 200, avoid stress concentration, and thus improve the reinforcement effect of the cable 200 on the composite slab 100, and have higher shear resistance. The overall stability of the reinforced structure of the composite slab 100 is higher.

[0074] Another embodiment of the present invention further discloses a reinforcement method for a composite floor slab, which is used to reinforce the reinforcement structure of any of the composite floor slabs described above. Figure 8 , the method comprising:

[0075] S1. A perforation is provided on the composite floor slab, and the perforation penetrates the composite floor slab along the thickness direction of the composite floor slab.

[0076] S2. Stack several fiber cloth strips together and then twist them together to form a cable. The cable twisted with fiber cloth strips has the advantages of simple raw materials and good reinforcement effect. The material cost required for the fiber cloth strip cable reinforcement scheme is relatively low, the construction efficiency is high, and it has the advantages of environmental protection and energy saving. This reinforcement scheme is suitable for perforations of different sizes and shapes and can flexibly respond to various reinforcement needs. The cable passes through the composite floor along the perforation, and several fiber cloths of the cable located in the perforation are intertwined, and the two ends of the cable extend out of the two side ends of the perforation; wherein, the length of the cable is greater than the thickness of the composite floor, and the radial cross-sectional area of ​​the cable is equal to or less than the cross-sectional area of ​​the perforation.

[0077] S3. Pull the two ends of the cable on both sides of the composite floor and apply tension to the cable along the length direction of the cable. By applying tension, the cable can bear part of the load of the floor, thereby improving the overall bearing capacity of the composite floor. The tension of the cable can be evenly distributed inside the floor, avoiding local stress concentration and improving the overall stability of the structure. The reinforcement effect of the cable can significantly increase the stiffness of the floor, reduce its deformation when subjected to load, and improve the deformation resistance of the structure. By adjusting the tension of the cable, reinforcement of different areas of the floor can be achieved, improving the pertinence and effectiveness of the reinforcement.

[0078] S4. Structural adhesive is poured into the perforation from at least one end of the perforation so that the cable is bonded to the inner wall of the perforation, and the tension is released after the structural adhesive solidifies. The structural adhesive can firmly adhere the fiber cloth strip to the floor slab to form a tight protective layer, which not only enhances the bonding strength between the fiber cloth strip and the floor slab, but also improves the cooperative working ability between the cable and the floor slab. The structural adhesive has excellent aging resistance and can maintain stable performance during long-term use. The use of structural adhesive can simplify the construction process and reduce the complexity and workload during the construction process.

[0079] S5. Fix the two ends of the cable to the floor surface on the corresponding side in a manner that the ends of each fiber cloth strip are dispersed from each other. This solution can effectively disperse the concentrated stress of the cable on the floor surface and avoid damage to the floor caused by excessive local stress. The bonding and fixing of the fiber cloth strip to the floor surface increases the connection area between the cable and the floor, thereby improving the strength and stability of the connection. Compared with traditional welding or bolt connection methods, the construction of the fiber cloth strip is simpler and faster. The bonding and fixing method of the fiber cloth strip is suitable for cables of various shapes and sizes, as well as floor surfaces of different materials.

[0080] S6. Inspect and accept the composite floor slab. When inspecting and accepting the composite floor slab, it is necessary to pay attention to whether the appearance of the reinforced floor slab meets the requirements, whether the quality and strength meet the design requirements and national standards, and ensure that there are no obvious defects.

[0081] For more details, see Fig. 9 In step S1, the method for drilling holes in a composite floor slab further comprises:

[0082] S10, determining the drilling position;

[0083] S11, select drilling tools;

[0084] S12, fixing the drilling position;

[0085] S13, drilling;

[0086] S14. Clean the holes.

[0087] Specifically, see Fig. 9 First, according to the design requirements, determine the location of the carbon cloth perforation. Usually, it is necessary to avoid the densely reinforced area or the location that has a greater impact on the safety of the structure. Use a steel bar detector (such as a radar scanner or a magnetic detector) to detect the distribution of steel bars inside the floor slab, mark the position of the steel bars, and ensure that the drilling will not damage the important steel bars. The damage of the steel bars will significantly reduce the bearing capacity of the floor slab. Adjust the drilling position after using the detector. If you must drill in a densely reinforced area, you need to confirm with the structural designer. When choosing a drilling tool, you can choose the tool according to the size of the perforation. For example, when the diameter of the hole to be perforated is within 10-50mm, you can use a handheld electric hammer or electric drill. When the diameter of the hole to be perforated is 50mm or more and precise drilling is required, you can use a drilling machine, such as a water drill, etc. The drill bit can use a diamond drill bit or an alloy drill bit to ensure high cutting efficiency and smooth hole edges.

[0088] When fixing the drilling position, you can put tape or marking tools on the drilling position to prevent slipping and clarify the drilling size. If using water drilling equipment, make sure the equipment is fixed to the floor to avoid deviation during drilling. When using ordinary electric hammer / drill operation: start at low speed, press the drill bit lightly, and gradually deepen the hole. Stop and clean the debris in the hole after each drilling depth. When using water drilling: install a water cooling system to prevent the drill bit from overheating. Continue to apply pressure evenly to ensure that the drilling depth and diameter meet the design requirements. Slow down when drilling through the floor to avoid damage to the hole or cracking of the bottom edge of the floor. Finally, use a high-pressure air gun or vacuum cleaner to clean the dust and debris in the hole to ensure that the hole is clean and ready for subsequent processes. If using water drilling, ensure that there is no residual moisture in the hole (you can use a hot air blower to dry it).

[0089] Furthermore, during the drilling process, it should be noted that the hole diameter should be slightly larger than the carbon cloth thickness, but not too large (it is recommended that the hole diameter be 3-5 mm larger than the total thickness of the carbon cloth) so that the glue can be evenly bonded when the hole is filled. The hole depth should be sufficient to ensure that the carbon cloth passes through completely and the bottom fixture can be installed. The construction environment should ensure that there is no vibration or external force interference in the construction area, prevent the drilling equipment from shifting, control dust diffusion (use a dust suction device or a water-cooled drill), and the edge of the drilled hole may cause local cracks in the floor. If necessary, epoxy mortar can be applied around the hole for edge sealing.

[0090] Finally, check whether the diameter, depth and position of the perforation meet the design requirements, ensure that there is no cracking at the edge of the hole, the inside is clean and dust-free, and confirm that the carbon cloth can pass through the hole smoothly.

[0091] Furthermore, the number of the fiber cloth strips may be 3, 4, 5, 6, 8 or other numbers, which is not specifically limited in this embodiment. The plurality of fiber cloth strips are preferably perforated in a sequentially stacked manner.

[0092] As can be seen from the above, the present invention discloses a new reinforcement method for composite floor slabs. After perforating the composite floor slabs, multiple fiber cloth strips are twisted into cables and then perforated for reinforcement. Compared with the traditional reinforcement method (such as adding concrete beams or steel beams), the construction steps are simpler and no large-scale destructive construction is required. It has the advantages of good perforation filling effect and better reinforcement effect on composite floor slabs.

[0093] Furthermore, fiber cloth strips are used to take advantage of their good ductility and are cleverly applied in the field of floor reinforcement. In combination with structural adhesive, the bonding effect between the cables in the perforations and the inner wall of the perforations is further improved. Fiber cloth strips are light and high-strength, which limits the weight increase of the reinforced structure while significantly improving the bearing capacity of the structure. Fiber materials usually have good corrosion resistance and can maintain stable performance for a long time in harsh environments such as moisture and corrosion.

[0094] What is particularly important is that in the reinforcement method disclosed in the present application, it is necessary to apply tension to the cable during the reinforcement process, and the reinforcement effect of the composite floor is achieved by applying the tension. In combination with the structural adhesive, the bonding strength can be enhanced, the durability and stability are improved, and the advantages of the fiber cloth strips are further enhanced. In addition, the structural adhesive combined with the cable can improve the overall bearing capacity of the composite floor, and the two ends of the cable are respectively adhered and fixed to the floor surface on the corresponding side in a manner that the ends of each fiber cloth strip are dispersed from each other. The tension of the cable can be evenly distributed inside the floor to avoid local stress concentration, and the end is dispersed by the remaining fiber cloth strips, thereby improving the overall stability of the structure, dispersing the stress and tension on the cable, and thereby improving the reinforcement effect of the cable on the composite floor.

[0095] Further preferably, in step S1, after a perforation is formed on the composite floor, a thread groove is further formed on the inner wall surface of the perforation or roughened, and the inner wall surface is cleaned. The design of the thread groove can increase the contact area between the cable and the inner wall of the perforation of the floor, and improve the connection strength and stability between the cable and the floor. The roughening treatment increases the bonding area and friction between the connector and the floor by forming an uneven rough surface on the inner wall surface of the perforation, thereby improving the bonding force. The inner wall surface of the perforation after the roughening treatment is rougher, which can better resist erosion and wear by external forces, prolong the service life, and the roughening treatment is suitable for perforations of various shapes and sizes, as well as floor surfaces of different materials.

[0096] In step S2, after the cable passes through the composite floor, at least part of the outer peripheral surface of the cable in the perforation does not fit in contact with the inner wall surface of the perforation. The main reason why at least part of the outer peripheral surface of the cable does not fit in contact with the inner wall surface of the perforation is to leave space for the structural adhesive to ensure that the structural adhesive can enter the cable and the perforation for bonding and fixing, and it can also reduce friction and wear, improve the flexibility of the cable, reduce stress concentration and use different deformation requirements. Because stress concentration usually occurs at mutation points or connections in the structure, if the cable is completely in contact with the inner wall of the perforation, stress concentration may occur at these locations. By maintaining a certain gap, the stress can be dispersed over a larger area, thereby reducing the risk of damage.

[0097] Furthermore, it should be noted that when several fiber cloth strips are passed through the composite floor slab to perform perforations, the fiber cloth can be screwed into the hole by the following steps: the fiber cloth is cut into strips suitable for the hole diameter, and the length is reserved for an appropriate margin according to the thickness of the composite floor slab; then the cut carbon fiber cloth strips are twisted into a rope shape to enhance the rigidity and facilitate penetration into the hole, while ensuring uniformity and tightness. Finally, the carbon fiber cloth twisted into a rope shape is passed through the hole using a lead wire or a guide rod, so that both ends are exposed outside the hole. Those skilled in the art may also choose other perforation methods, which are not specifically limited in this embodiment.

[0098] Further preferably, in step S3: when pulling the two ends of the cable on both sides of the composite floor, the corresponding ends of each fiber cloth strip at each end of the cable are all subjected to tension, and the direction of the tension is consistent with the length direction of the cable and is directed toward the side away from the composite floor. In addition, while applying tension to the cable, a torsional force around the length direction is also applied to at least one end of the cable.

[0099] Specifically, in step S3, tension is applied to the corresponding ends of each fiber cloth strip at each end of the cable, and the tension at each end can be the same or different. For example, the tension at one end of each fiber cloth strip is set to 15N. The tension applied to the ends of the fiber cloth strip is transmitted to the internal cable, which can improve the overall strength of the cable. The tension of the cable can be dispersed to each fiber cloth strip, thereby avoiding structural damage caused by stress concentration and optimizing the stress state. Further, when a torsional force is applied to the fiber cloth strip while applying tension, the tension applied by the fiber cloth strips on both sides of the composite floor slab has opposite effects. For example, when a clockwise torsional force is applied to the fiber cloth strips on one side of the composite floor slab, a counterclockwise torsional force is applied to the fiber cloth strips on the other side of the composite floor slab.

[0100] Further preferably, in step S4: when pouring structural adhesive into the perforation, the structural adhesive is poured into the perforation from both sides of the composite floor slab simultaneously or at intervals, and the structural adhesive fills the gap between the outer peripheral surface of the hole portion of the cable and the inner wall of the perforation, and bonds the cable and the inner wall together. The structural adhesive is one of epoxy resin adhesive, polyurethane adhesive, and acrylate adhesive.

[0101] For example, structural glue can be poured into the perforations from both sides of the laminated floor at the same time, or structural glue can be poured into the perforations from both sides of the laminated floor at intervals. When pouring structural glue, a glue gun can be used to ensure that the structural glue is evenly poured into the perforations and completely wraps the fiber cloth strips. For example, when pouring structural glue into the perforations on both sides of the laminated floor, the injection interval of the structural glue on the same side can be 1 minute, 2 minutes, 3 minutes, etc., and those skilled in the art can design and adjust according to actual needs, and this embodiment does not make specific restrictions on this. In addition, taking pouring epoxy resin glue as an example, the initial solidification and hardening time of epoxy resin glue is 2 to 6 hours. During this period, the glue has begun to solidify and the surface has hardened, but the interior has not yet been completely solidified. If complete solidification is required, it usually takes 24 to 48 hours. By increasing the ambient temperature (such as using a hot air blower or oven), the complete solidification time can be shortened to 2-6 hours (at 60-80°C). Those skilled in the art can adjust according to actual needs, and this embodiment does not make specific settings for this. However, during the construction process, care should be taken to avoid disturbing the fiber cloth strips during the curing period of the structural adhesive, and wait until the structural adhesive is completely hardened and bonded before processing.

[0102] Further preferably, in step S5: the fiber strips at each end of the cable are spread out on the floor surface of the corresponding side of the composite floor in a manner of uniform spacing around the perforations, and are fixedly connected to the floor surface by bonding. With this design method, the fiber strips are specially treated and have high tensile strength. When they are spread out on the floor surface in a manner of uniform spacing and fixed by bonding, they can effectively form a whole with the floor and bear the load together, thereby improving the bearing capacity of the floor. When subjected to external forces, the floor can better resist deformation and damage, maintain the integrity and stability of the structure, and help optimize the stress distribution inside the floor.

[0103] Further preferably, in step S1: a plurality of holes are provided at intervals on the composite floor slab, and each hole is filled with a cable. For example, the structure can be seen in Figure 1 and Figure 2 A plurality of through holes 110 are provided at intervals on the composite floor 100, and the apertures of the plurality of through holes 110 are the same, and the aperture of each through hole 110 is in the range of 10 to 80 mm. For example, the aperture of each through hole 110 can be the same or different, for example, the aperture of each through hole 110 can be 10 mm, 30 mm, 50 mm, 80 mm, etc.

[0104] The thickness of each fiber cloth strip is within the range of 0.1 mm to 0.2 mm, and the cable is formed by stacking and twisting a plurality of fiber cloth strips. For example, the thickness of each fiber cloth strip is 0.1 mm, 0.15 mm, 0.2 mm, etc., which is not specifically limited in this embodiment. The diameter of each perforation is larger than the total thickness of all fiber cloth strips of the cable filled therein, and the size difference between the two is within the range of 3 to 5 mm.

[0105] Furthermore, in the reinforcement method of the composite floor disclosed in the present invention, in step S3:

[0106] One end of the cable is fixed to the floor surface of one side of the composite floor by using a fiber cloth fixing device, and the other end of the cable is pulled by using a prestressed tensioning device to apply tension to the cable along the length direction of the cable.

[0107] One end of the fiber cloth fixing device is fixed to the floor surface on one side of the composite floor, and the end of each fiber cloth strip at the corresponding end of the cable is connected and fixed to the other end of the fiber cloth fixing device away from the composite floor. In addition, one end of the prestressed tensioning device is fixed to the floor surface on the other side of the composite floor, and the other end of the cable is connected to the other end of the prestressed tensioning device away from the composite floor and can move with the other end of the prestressed tensioning device.

[0108] Further preferably, in step S4, after the structural adhesive is solidified, the prestressing tensioning device is removed. And in step S5, the other end of the cable is fixedly attached to the floor surface on the other side of the composite floor in a manner that the ends of the fiber cloth strips are dispersed with each other, and the ends of the fiber cloth strips at one end of the cable are fixedly attached to the floor surface on one side of the composite floor in a manner that the ends of the fiber cloth strips are dispersed with each other.

[0109] Specifically, when the fiber cloth fixing device is used to fix one end of the cable on the floor surface on one side of the composite floor, the fiber cloth fixing device fixes one end of the cable, for example, by various methods such as wrapping, winding, gluing, binding, etc. The corresponding end of the fiber cloth strip fixed to the fiber cloth fixing device should also extend out of the fiber cloth fixing device, and in one of the preferred implementations of the method, the fiber cloth fixing device is fixed on the floor surface and partially fixed in the perforation.

[0110] Furthermore, it should be noted that, because in one of the implementation methods disclosed in this embodiment, one end of the fiber cloth fixing device is fixed on the floor surface on one side of the composite floor, and the end of the fiber cloth strip is fixed on the fiber cloth fixing device, it is possible to use the fiber cloth fixing device to fix one end of the cable on the floor surface on one side of the composite floor.

[0111] More specifically, the structure of the fiber cloth fixing device disclosed in this embodiment is as follows: Fig. 9 As shown, the fiber cloth fixing device 300 includes an integrally formed connecting end 310 and a fixing plate 320. The connecting end 310 is set to be cylindrical. The outer diameter of the connecting end 310 is adapted to the inner diameter of the through hole 110, and a through hole 311 extending parallel to the through hole 110 is opened inside the connecting end 310. The fiber cloth strip 210 of the cable 200 can pass through the through hole 311 of the connecting end 310 and then be fixed on the fixing plate 320. The outer diameter of the fixing plate 320 is larger than the outer diameter of the connecting end 310. When the fiber cloth fixing device 300 is fixed, the connecting end 310 is cylindrical. The outer diameter of the connecting end 310 is matched with the inner diameter of the through hole 110. The connecting end 310 is penetrated inside the through hole 110. Since the outer diameter of the fixing disk 320 is larger than the outer diameter of the connecting end 310, and the end of the fiber cloth strip 210 is fixed on the fixing disk 320, when the other end of the fiber cloth strip 210 is pulled by the prestressing tensioning device 400 to apply prestress, the fixing disk 320 and the corresponding side of the composite floor slab 100 abut against each other and provide a reaction force to the cable 200 opposite to the tension provided by the prestressing tensioning device 400, so that the cable 200 located in the through hole 110 is tightened.

[0112] For further information, see Figure 3 and Figure 4When the fiber cloth fixing device 300 needs to be installed in the through hole 110, each fiber cloth strip 210 can be first passed through the through hole 311 of the connecting end 310, and then the end of the fiber cloth strip 210 is fixed on the fixing plate 320, for example, by turning it up, wrapping it, tying it, clamping it, etc. Figure 7 In one implementation of the present embodiment, a plurality of fixing holes 321 are provided on the fixing plate 320 of the fiber cloth fixing device 300. When fixing the cable 200, each fiber cloth strip 210 first passes through the through hole 110 of the composite floor 100, then passes through the through hole 311 of the connecting end 310, and then is folded upward and passed through one of the fixing holes 321 of the fixing plate 320 for fixing. After the fiber cloth fixing device 300 and the fiber cloth strip 210 are fixed, the fiber cloth strip 210 is pulled from the other end so that the connecting end 310 is inserted into the through hole 110. The process of inserting the connecting end 310 into the through hole 110 is as shown in FIG. Figure 3 To improve the connection strength, the fiber cloth strip 210 can be wrapped several times after passing through the fixing hole 321, or it can be tied to the fixing hole 321 during wrapping, and the end should also extend out of the fixing hole 321 to prepare for subsequent fixing on the floor surface.

[0113] It should be noted that, when the fiber cloth fixing device 300 is used to fix the cable 200 in the implementation method disclosed in this embodiment, it is only necessary to apply tension and torsional force at the other end through the prestressed tensioning device 400.

[0114] See also Figure 3 , Figure 4 , Figure 7 The example of the cable 200 including four fiber cloth strips and the fixing plate 320 having four fixing holes 321 is used for explanation: each fiber cloth strip 210 first passes through the through hole 110 of the composite floor 100, then passes through the through hole 311 of the connecting end 310, and then folds upward and passes through one of the fixing holes 321 of the fixing plate 320 and is clamped and fixed or wrapped around the end of the fixing hole 321, and the fiber cloth strip 210 also extends outside the fixing hole 321, and then the connecting end 310 is aligned with the through hole 110 of the composite floor 100, and the connecting end 310 is inserted into the through hole 110, and the fixing plate 320 is attached to and abuts against the surface of the composite floor 100 around the through hole 110. It should be noted that the fixing method and means of the fiber cloth strip 210 passing through the through hole 110 and being fixed to the end of the fixing plate 320 can be adjusted and designed by those skilled in the art according to actual needs, and this embodiment does not make a sole limitation on this.

[0115] In this embodiment, a fiber cloth fixing device 300 is installed in the through hole 110 and fixed to one end of the composite floor 100. When there is a hollow or bulge in the middle of the composite floor 100, by pulling the other end of the cable 200 upward, the fiber cloth fixing device 300 and the composite floor 100 on the corresponding side are subjected to a force toward the other side, and the composite floor 100 is made to fit together.

[0116] Also, please see Figure 4 Because part of the cable 200 near one end of the fiber cloth fixing device 300 is located in the through hole 311 of the connecting end 310, the cable 200 located in the through hole 311 has no direct contact with the inner wall surface of the through hole 110 on the composite floor 100, and the cable 200 located in the through hole 311 is bonded to the inner wall portion of the through hole 311, and the outer wall portion of the connecting end 310 of the fiber cloth fixing device 300 can be bonded to the inner wall surface of the through hole 110 by adhesive, or the outer wall portion of the connecting end 310 is provided with an external thread, and the inner wall portion of the through hole 110 is provided with an internal thread for threaded connection. Those skilled in the art can make settings according to actual needs, and this embodiment does not make specific limitations on this.

[0117] The prestressed tensioning device 400 can be a common mechanical tensioning device, a hydraulic tensioning device, an electric heating tensioning device, etc. For example, a drum tensioner can be used for tensioning. Technical personnel in this field can choose according to actual needs, and this embodiment does not make specific limitations on this.

[0118] When one end of the fiber cloth strip 210 is fixed to the floor surface on one side of the composite floor 100 by the fiber cloth fixing device 300, the other end is subjected to tension by the prestressed tensioning device 400, for example, a rotational force can be applied while applying the tension, which can improve the overall strength of the cable 200, and the tension of the cable 200 can be dispersed to each fiber cloth strip 210, thereby avoiding structural damage caused by stress concentration and optimizing the stress state of the internal cable. It should be noted that when one end of the cable 200 is fixed by the fiber cloth fixing device 300, when the prestressed tensioning device 400 applies tension to the other end, one end of the fiber cloth fixing device 300 applies a reaction force, so that the internal cable 200 remains in a tensioned state. Through prestressed tensioning, the fiber cloth strip 210 and the cable 200 can jointly bear the structural load, thereby improving the stability and safety of the overall structure, and can effectively resist external loads and reduce deformation and damage of the structure.

[0119] Then, the structural adhesive is poured into the perforation 110. When the structural adhesive, the cable 200, and the inner wall of the perforation 110 are completely hardened and solidified, the prestressed tensioning device 400 is removed. The prestressed tensioning device 400 can be removed by pulling it out. The fiber cloth fixing device 300 is fixed on the composite floor 100 and partially located in the perforation 110. Then, each fiber cloth strip 210 of the cable 200 is turned over and attached to the surface of the composite floor 100. Specifically, the fiber cloth strip 210 located on the upper surface of the composite floor 100 is turned down and laid flat and separated. The fiber cloth strips 210 on the lower surface of the composite floor 100 are loosely bonded to the upper surface of the composite floor 100, and the fiber cloth strips 210 on the lower surface of the composite floor 100 are turned upward and laid flat, and loosely bonded to the lower surface of the composite floor 100. Both ends of the cable 200 are attached to the floor surface on one side of the composite floor 100 in a dispersed manner. The dispersed arrangement of the cables 200 makes the composite floor 100 more evenly stressed, effectively preventing damage caused by local stress concentration, and forming a prestressed field inside the cables 200 and the perforations 110 to improve the bearing capacity of the composite floor 100. The composite floor 100 can better transmit and disperse stress when subjected to stress, thereby improving the overall stress performance of the composite floor 100.

[0120] It should be noted that, in addition to the implementation methods of the present invention described in the above-mentioned specific embodiments, those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention is introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation method. On the contrary, the purpose of introducing the invention in conjunction with the implementation method is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the above description contains many specific details, and the present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0121] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0122] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0123] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0124] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0125] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A reinforcement structure for a composite floor, characterized in that: The composite floor comprises at least two overlapping floor slabs, and further comprises: at least one through hole penetrating the composite floor slab in a thickness direction of the composite floor slab; At least one cable, each of which is disposed through a corresponding one of the through holes, with both ends extending out of the two side ends of the through hole; Each of the cables is formed by stacking a number of fiber cloth strips and then twisting them together, each of the cables is bonded to the inner wall of the corresponding perforation by means of structural adhesive, and the fiber cloth strips in the portion of each cable located in the perforation are also bonded together by means of the structural adhesive; and both ends of each of the cables are respectively attached and fixed to the floor surface on the corresponding side in a manner that the ends of the fiber cloth strips are dispersed from each other; and A fiber cloth fixing device is provided at one end of the perforation, and the fiber cloth fixing device includes an integrally formed connecting end and a fixing plate; wherein The connecting end is cylindrical, the outer diameter of which matches the inner diameter of the through hole, and a through hole extending parallel to the through hole is provided inside; The fixing plate is disposed around the end of the connection end away from the composite floor slab, and includes a joint portion and a fixing portion arranged in sequence along the radial direction, and the fixing portion is disposed around the joint portion and includes a plurality of fixing holes arranged along the circumferential direction; and The connecting end extends into one end of the through-hole, the outer wall is fitted with the inner wall of the through-hole, and the fixing portion is in contact with the floor surface on the side around the through-hole. The corresponding end of the cable extends out of the one end of the through-hole through the through-hole, and the end of each fiber cloth strip bypasses the joint and passes through the corresponding fixing hole, and is flatly fixed on the floor surface on the corresponding side of the composite floor in a dispersed manner.

2. The reinforcement structure of the composite floor slab according to claim 1, characterized in that: in The plurality of fixing holes are arranged on the fixing portion in a manner of being evenly distributed along the circumferential direction; and The ends of the fiber cloth strips at both ends of the cable are dispersedly attached to and fixed on the floor surface of the corresponding side in a manner of being evenly spaced around the through hole.

3. The reinforcement structure of the composite floor slab according to claim 1, characterized in that: A plurality of through holes are provided at intervals on the composite floor slab, and each of the through holes is filled with the cable; wherein The apertures of the plurality of perforations are the same, and the aperture of each perforation is in the range of 10 to 80 mm; The thickness of each of the fiber cloth strips is in the range of 0.1 mm to 0.2 mm, and the cable is formed by stacking and twisting a plurality of the fiber cloth strips; and The diameter of each of the perforations is larger than the total thickness of all the fiber cloth strips of the cable filled therein, and the size difference between the two is within the range of 3-5 mm.

4. The reinforcement structure of the composite floor slab according to claim 1, characterized in that: Each of the fiber cloth strips is formed by combining fiber material, matrix material, and reinforcing agent; in The fiber material includes any one of carbon fiber, glass fiber, polyimide fiber, silicon carbide fiber, ceramic fiber, and metal fiber; The matrix material is coated on the outer layer of the fiber material as a binder or a protective layer, and includes one of epoxy resin, acrylic resin, polyurethane, and phenolic resin; The reinforcing agent is coated on the periphery of the fiber cloth strip and includes at least one of an anti-ultraviolet agent and an antioxidant.

5. A method for reinforcing a composite floor, characterized in that: The reinforcement method is used to form a reinforcement structure of a composite floor slab according to any one of claims 1 to 4, and the method comprises: S1. A through hole is formed on the composite floor slab, wherein the through hole penetrates the composite floor slab along the thickness direction of the composite floor slab; S2, stacking a plurality of fiber cloth strips together, and then twisting them together to form a cable, and passing the cable through the composite floor along the through hole, the plurality of fiber cloth strips of the cable located in the through hole are intertwined with each other, and both ends of the cable extend out of the two side ends of the through hole; wherein the length of the cable is greater than the thickness of the composite floor, and the radial cross-sectional area of ​​the cable is equal to or smaller than the cross-sectional area of ​​the through hole; S3, pulling the two ends of the cable on both sides of the composite floor slab and applying tension to the cable along the length direction of the cable; S4, pouring structural adhesive into the through-hole from at least one end of the through-hole so that the cable is bonded to the inner wall of the through-hole, and releasing the tension after the structural adhesive solidifies; S5, attaching and fixing the two ends of the cable to the floor surface of the corresponding side in a manner that the ends of the fiber cloth strips are dispersed from each other; S6. Inspect and accept the composite floor slab.

6. The reinforcement method of composite floor slab according to claim 5, characterized in that: in In the step S1, after the through hole is formed on the composite floor slab, a thread groove is further formed on the inner wall surface of the through hole or roughening is performed, and the inner wall surface is cleaned; and In the step S2, after the cable passes through the composite floor, at least part of the outer peripheral surface of the portion of the cable located in the hole is not in close contact with the inner wall surface of the hole.

7. The reinforcement method of composite floor slab according to claim 5, characterized in that: In step S3: When the two ends of the cable are pulled on both sides of the composite floor, a tension is applied to the corresponding ends of each fiber cloth strip at each end of the cable, and the direction of the tension is consistent with the length direction of the cable and is toward the side away from the composite floor; and While a tensile force is applied to the cable, a torsional force around the length direction is also applied to at least one end of the cable.

8. The reinforcement method of composite floor slab according to claim 5, characterized in that: In step S4: When pouring the structural adhesive into the perforation, the structural adhesive is poured into the perforation from both sides of the composite floor slab simultaneously or at intervals, so that the structural adhesive fills the gap between the outer peripheral surface of the hole portion of the cable and the inner wall of the perforation and bonds the cable and the inner wall together; The structural adhesive is one of epoxy resin adhesive, polyurethane adhesive and acrylic adhesive.

9. The reinforcement method of composite floor slab according to claim 5, characterized in that: In step S5: The fiber cloth strips at each end of the cable are spread uniformly around the perforations and laid on the floor surface of the corresponding side of the composite floor, and are fixedly connected to the floor surface by bonding.

10. The reinforcement method of composite floor slab according to claim 5, characterized in that: In step S3: One end of the cable is fixed to the floor surface of one side of the composite floor by using a fiber cloth fixing device, and the other end of the cable is pulled by using a prestressed tensioning device to apply tension to the cable along the length direction of the cable; One end of the fiber cloth fixing device is fixed to the floor surface on one side of the composite floor, and the end of each fiber cloth strip at the corresponding end of the cable is engaged and fixed to the other end of the fiber cloth fixing device away from the composite floor; and One end of the prestressed tensioning device is fixed on the floor surface on the other side of the composite floor, and the other end of the cable is connected to the other end of the prestressed tensioning device away from the composite floor and can move with the other end of the prestressed tensioning device.

11. The reinforcement method of composite floor slab according to claim 10, characterized in that: in In the step S4, after the structural adhesive solidifies, the prestressing tensioning device is removed; and In step S5, the other end of the cable is adhered and fixed to the floor surface on the other side of the composite floor in a manner that the ends of each fiber cloth strip are dispersed with each other, and the ends of each fiber cloth strip at one end of the cable are adhered and fixed to the floor surface on one side of the composite floor in a manner that the ends of each fiber cloth strip are dispersed with each other.

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