Reinforcing structure of existing floor slab
By using reinforced structures such as fiber cloth, reinforcement layers, fixed steel bars and screws on the floor of old houses, the problem of lowering bearing capacity after opening is solved, and the reliability of reinforcement and construction efficiency are improved.
Patent Information
- Application Number
- CN202420846236.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-04-23
AI Technical Summary
During the reinforcement and renovation of old houses, the original force transmission path was cut off after the hole was opened, resulting in the increase in internal force around the hole, concentrated stress, and reduced bearing capacity. It is necessary to strengthen the surroundings of the new hole.
A reinforced structure of existing floor slabs is adopted, including existing floor slabs, counterscrews, fiber cloths, reinforcement layers, fixed steel bars and steel bar holes. By pasting carbon fiber cloth on the bottom of the floor slab, fixing the reinforcement layer on the top, fixing the steel bars on one side of the reinforcement layer and opening the steel bar holes on the other side, forming a reliable connection, enhancing integrity, and using the opposite pass between the fiber cloth and the steel plate pressing strip The screw is fixed.
Effectively prevent cracks on the top of the floor slab, enhance the bearing capacity around the opening, reduce construction project volume, increase construction speed, and reduce construction costs.
Smart Images
Figure CN222478249U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical direction of construction engineering, and specifically relates to a reinforcement structure of an existing floor slab. Background Art
[0002] Many old houses are affected by environmental factors, and their current safety performance can no longer meet the needs of today's production and life. The houses need to be reinforced and renovated.
[0003] During the renovation process, there are many prefabricated hollow floor slabs in old houses. According to the layout of the renovation pipeline, some floor slabs need to be opened. After the hole is opened, the original force transmission path is cut off, the internal force around the hole is increased, causing stress concentration and reduced bearing capacity. It is necessary to reinforce the area around the newly opened hole before opening the hole.
[0004] Therefore, the utility model provides a reinforcement structure of an existing floor slab, which overcomes the defects of the prior art, ensures that the opening is reinforced reliably and firmly, reduces the construction workload, speeds up the construction speed, and reduces the construction cost. Utility Model Content
[0005] The purpose of the utility model is to provide a reinforcement structure of an existing floor slab in accordance with the existing device, so as to solve the problems raised in the above-mentioned background technology.
[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a reinforcement structure of an existing floor slab, comprising an existing floor slab and through-screws, characterized in that: a fiber cloth is pasted on the bottom of the existing floor slab, and the fiber cloth is a carbon fiber cloth with a specification of not less than level one, a reinforcement layer is fixed on the top of the existing floor slab, fixed steel bars are fixed on one side of the reinforcement layer, and steel bar holes are opened on the other side of the reinforcement layer.
[0007] The utility model further describes that a hole is opened in the middle part of the existing floor slab.
[0008] The utility model further illustrates that a slab top grouting material filling hole is opened on the top of the existing floor slab, and the slab top grouting material filling hole is used to fill grouting material into the existing floor slab, and a new hole is opened through the top of the existing floor slab.
[0009] The utility model further describes that a waterproof layer is coated on the surface of the reinforcement layer.
[0010] The utility model further describes that a steel plate strip is fixed to the top of the waterproof layer and the bottom of the existing floor slab.
[0011] The utility model further describes that two ends of the steel plate pressure strip are penetrated by through-screws for fixing the steel plate pressure strip and the fiber cloth.
[0012] Compared with the prior art, the beneficial effects achieved by the utility model are: the utility model,
[0013] (1) A reinforcement layer is provided to prevent cracks from appearing on the top surface of the existing floor slab;
[0014] (2) By providing fixed steel bars and steel bar holes, the existing floor slabs are reliably connected and their integrity is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 It is a structural diagram of the hollow floor opening reinforcement of the utility model;
[0018] Figure 3 It is a cross-sectional view of the hollow floor opening reinforcement structure of the utility model;
[0019] In the figure: 1. Existing floor; 2. New opening; 3. Fiber cloth; 4. Steel plate strip; 5. Through screws; 6. Grouting material; 7. Reinforcement layer; 8. Fixed steel bars; 9. Waterproof layer; 10. Steel bar holes; 11. Grouting holes on the top of the slab. DETAILED DESCRIPTION
[0020] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-3 The utility model provides a technical solution: a reinforcement structure of an existing floor slab, comprising an existing floor slab 1 and a through-screw 5, wherein the existing floor slab 1 is a hollow prefabricated floor slab, and a hole is opened in the middle of the existing floor slab 1 according to the requirements of the reconstruction design;
[0022] A grouting hole 11 is provided on the top of the existing floor slab 1, and grouting material 6 is poured into the existing floor slab 1 through the grouting hole 11. A new opening 2 is penetrated through the top of the existing floor slab 1, and the position of the opening is set according to the requirements of the reconstruction design;
[0023] A fiber cloth 3 is pasted on the bottom of the existing floor slab 1. The fiber cloth 3 is a carbon fiber cloth with a specification not lower than Grade 1. A reinforcement layer 7 is fixed on the top of the existing floor slab 1 to prevent cracks from appearing on the top surface of the existing floor slab 1.
[0024] A fixed steel bar 8 is fixed on one side of the reinforcement layer 7, and a steel bar hole 10 is opened on the other side of the reinforcement layer 7. The fixed steel bar 8 can be inserted into the steel bar hole 10 during assembly, so that the existing floor slabs 1 have a reliable connection and strengthen the integrity. The surface of the reinforcement layer 7 is coated with a waterproof layer 9 to reduce the top water seepage caused by the through cracks;
[0025] A steel plate strip 4 is fixed to the top of the waterproof layer 9 and the bottom of the existing floor 1 , and through-screws 5 are passed through both ends of the steel plate strip 4 to fix the steel plate strip 4 and the fiber cloth 3 .
[0026] Working principle: A hole is opened in the middle of the existing floor slab 1. At the same time, a hole is opened at the top of the existing floor slab 1, 100mm away from the newly opened hole 2, as a hole 11 for grouting the top of the slab. First, the fiber cloth 3 is attached to the existing floor slab 1 around the newly opened hole 2 by adhesive to strengthen the bearing capacity of the plate around the hole. The existing floor slab 1 is poured with a reinforcement layer 7 to prevent cracks from appearing on the top surface of the existing floor slab 1, and fixed steel bars 8 are placed and steel bar holes 10 are opened to ensure a reliable connection between the existing floor slabs 1 and strengthen the integrity. A waterproof layer 9 is applied above the reinforcement layer 7 to reduce top water seepage caused by through cracks. The steel plate strip 4 is fixed at the end of the fiber cloth 3. The steel plate strip 4 is fixed to the upper part of the waterproof layer 9 and the lower part of the existing floor slab 1, and the through bolt 5 is located. The through screw 5 is a φ10 tension bolt, which is penetrated through the existing floor slab 1 and the waterproof layer 9 to fix the steel plate strip 4. The next step is to construct the new opening 2. A cutting machine is used to cut out the new opening 2. The opening size is a rectangular hole with a length and width less than 300mm or a round hole with a diameter less than 300mm. It penetrates the existing floor 1. The opening position is set according to the requirements of the reconstruction design. The grouting material 6 is constructed. The grouting material 6 is a fluid material with good fluidity, early strength, high strength, and micro-expansion properties. The grouting material 6 is poured into the grouting material filling hole 11 on the top of the existing floor 1 to fill the hollow position around the new opening 2 of the existing floor 1 to compensate for the weakening of the cross section of the board caused by the opening and strengthen the bearing capacity of the floor around the new opening 2.
[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0028] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.
Claims
1. A reinforcement structure for an existing floor slab, comprising an existing floor slab (1) and a through-threaded rod (5), characterized in that: A fiber cloth (3) is pasted on the bottom of the existing floor slab (1), and the fiber cloth (3) is a carbon fiber cloth with a specification of not less than grade one. A reinforcement layer (7) is fixed on the top of the existing floor slab (1), and a fixed steel bar (8) is fixed on one side of the reinforcement layer (7), and a steel bar hole (10) is opened on the other side of the reinforcement layer (7).
2. The reinforcement structure of an existing floor slab according to claim 1, characterized in that: The middle part of the existing floor slab (1) is opened.
3. The reinforcement structure of an existing floor slab according to claim 2, characterized in that: The top of the existing floor slab (1) is provided with a grouting hole (11), and the grouting hole (11) is used to inject grouting material (6) into the existing floor slab (1). The top of the existing floor slab (1) is penetrated by a newly opened hole (2).
4. The reinforcement structure of an existing floor slab according to claim 3, characterized in that: The surface of the reinforcement layer (7) is coated with a waterproof layer (9).
5. The reinforcement structure of an existing floor slab according to claim 4, characterized in that: A steel plate strip (4) is fixed to the top of the waterproof layer (9) and the bottom of the existing floor slab (1).
6. The reinforcement structure of an existing floor slab according to claim 5, characterized in that: Through-through screws (5) are passed through both ends of the steel plate pressure strip (4) for fixing the steel plate pressure strip (4) and the fiber cloth (3).