Bottom reinforcement structure of floor

Abstract

The utility model discloses a reinforcement structure for the bottom of a floor slab, including a reinforcement steel bar assembly, a planting bar, a reinforcement plate and a casting template; the casting template is arranged below the floor slab, a reinforcement area is formed between the bottom of the floor slab and the top of the casting template, and the reinforcement steel bar assembly is tied in the reinforcement area; a plurality of planting bar holes are formed at intervals in the floor slab, the lower ends of the planting bar holes penetrate downwardly through the bottom surface of the floor slab and are connected to the reinforcement area; a plurality of casting holes are formed at intervals in the floor slab, the lower ends of the casting holes penetrate downwardly through the bottom surface of the floor slab and are connected to the reinforcement area, and the upper ends of the casting holes penetrate upwardly through the top surface of the floor slab; the upper ends of a plurality of planting bars are inserted into a plurality of planting bar holes, the lower ends of a plurality of planting bars extend into the reinforcement area and are fixedly connected to the reinforcement steel bar assembly; the reinforcement plate is formed by concrete injected into the reinforcement area through the casting holes, and the reinforcement plate is connected to the floor slab into an integrated structure through a plurality of planting bars. The utility model relates to the field of building construction technology, and can solve the problem of the difficulty of reinforcing the bottom of the floor slab in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a floor slab bottom reinforcement structure. Background Art

[0002] During the use of building structures, there is often a need to reinforce the floor slab. Especially as the building structure ages, the load-bearing capacity of the floor slab is greatly reduced, and the floor slab needs to be reinforced to ensure the safety of the building structure. The traditional method of floor slab reinforcement is to pour concrete on the top surface of the floor slab to increase the load-bearing capacity of the floor slab by increasing the thickness.

[0003] In special cases such as when the space above the floor is limited, traditional floor reinforcement methods are often not applicable. The floor can only be reinforced at the bottom, but the concrete pouring construction at the bottom of the floor is difficult and the reinforcement effect of the floor cannot be guaranteed. Therefore, it is necessary to provide a floor bottom reinforcement structure that can solve the problem of difficulty in reinforcing the bottom of the floor in the prior art. Summary of the invention

[0004] The utility model aims to provide a floor bottom reinforcement structure, which can solve the problem of difficulty in reinforcing the floor bottom in the prior art.

[0005] The utility model is achieved in this way:

[0006] A reinforcement structure for the bottom of a floor slab comprises a reinforcement steel bar assembly, embedded steel bars, a reinforcement plate and a casting formwork; the casting formwork is erected below the floor slab to form a reinforcement area between the bottom surface of the floor slab and the top surface of the casting formwork, and the reinforcement steel bar assembly is tied and fixed in the reinforcement area; a plurality of embedded steel bar holes are formed at intervals in the floor slab, and the lower ends of the embedded steel bar holes penetrate downwardly through the bottom surface of the floor slab and are connected to the reinforcement area; a plurality of casting holes are formed at intervals in the floor slab, and the lower ends of the casting holes penetrate downwardly through the bottom surface of the floor slab and are connected to the reinforcement area, and the upper ends of the casting holes penetrate upward through the top surface of the floor slab; the upper ends of a plurality of embedded steel bars are respectively inserted into the plurality of embedded steel bar holes, and the lower ends of the plurality of embedded steel bars extend into the reinforcement area and are fixedly connected to the reinforcement steel bar assembly; the reinforcement plate is formed by concrete injected into the reinforcement area through the casting holes, and the reinforcement plate is connected to the floor slab into an integrated structure through a plurality of embedded steel bars.

[0007] The reinforcing steel bar assembly includes bottom bars and longitudinal bars, a plurality of bottom bars are arranged at intervals along the length direction of the floor slab, a plurality of longitudinal bars are arranged at intervals along the width direction of the floor slab, a plurality of bottom bars are cross-connected with a plurality of longitudinal bars to form a steel mesh structure, and the lower ends of a plurality of embedded bars are connected to the steel mesh structure.

[0008] The lower ends of the plurality of embedded reinforcement bars are bent to form a bent portion parallel to the reinforcement mesh structure, and the bent portion is connected to the cross-connection node of the bottom reinforcement and the longitudinal reinforcement.

[0009] Each of the bottom reinforcements is arranged perpendicular to the edge beams at the edge of the floor slab, and the ends of the bottom reinforcements are anchored in the edge beams.

[0010] The length of the bottom reinforcement anchored in the side beam is not less than 15d.

[0011] The floor slab is formed with ventilation holes, the lower ends of the ventilation holes are communicated with the reinforcement area, and the upper ends of the ventilation holes penetrate the top surface of the floor slab.

[0012] The thickness of the reinforcement plate is not less than 40 mm, and the reinforcement steel bar assembly is arranged in the middle of the reinforcement plate in the thickness direction.

[0013] The depth of the embedded reinforcement in the floor slab is not less than 80 mm, the diameter of the embedded reinforcement is not less than 8 mm, and the spacing between the embedded reinforcements is 600 mm.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model is provided with a pouring template and a pouring hole. After the pouring template is set up under the floor slab to form a reinforcement area, the grouting material can be grouted into the reinforcement area through the pouring hole, and the gas in the reinforcement area can be discharged through the air vents. When the air vents overflow, the pouring can be stopped. The pouring density of the reinforcement plate can be guaranteed, thereby ensuring the structural strength of the reinforcement plate and its reinforcement effect on the floor slab, and greatly reducing the difficulty of the reinforcement construction at the bottom of the floor slab, with good economy and safety.

[0016] 2. The utility model is provided with embedded bars and reinforcing steel bar components. The embedded bars can be tied between the floor slab and the reinforcing plate. The reinforcing steel bar components are arranged in the reinforcing plate in the form of a steel mesh structure and anchored in the side beams, so that the reinforcing plate, the floor slab and the side beams are connected to form a whole. The reinforced concrete structure is used to make the reinforcing plate have sufficient structural strength and bearing capacity, thereby effectively improving the reinforcement effect of the bottom of the floor slab. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of the floor bottom reinforcement structure of the utility model.

[0018] In the figure, 1 is the embedded reinforcement, 101 is the bending part, 2 is the reinforcement plate, 3 is the casting formwork, 4 is the floor slab, 401 is the embedded reinforcement hole, 402 is the casting hole, 403 is the ventilation hole, 501 is the bottom reinforcement, 502 is the longitudinal reinforcement, and 6 is the side beam. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Please see attached Figure 1A floor bottom reinforcement structure includes a reinforcement steel bar assembly, a reinforcement bar 1, a reinforcement plate 2 and a casting template 3; the casting template 3 is set up below the floor 4, and a reinforcement area is formed between the bottom surface of the floor 4 and the top surface of the casting template 3, and the reinforcement steel bar assembly is tied and fixed in the reinforcement area; a plurality of reinforcement holes 401 are formed at intervals in the floor 4, and the lower ends of the reinforcement holes 401 penetrate downwardly through the bottom surface of the floor 4 and are connected to the reinforcement area; a plurality of casting holes 401 are formed at intervals in the floor 4 2. The lower end of the casting hole 402 penetrates downwardly through the bottom surface of the floor slab 4 and is connected to the reinforcement area, and the upper end of the casting hole 402 penetrates upward through the top surface of the floor slab 4; the upper ends of a plurality of embedded bars 1 are respectively inserted into a plurality of embedded bars holes 401, and the lower ends of a plurality of embedded bars 1 extend into the reinforcement area and are fixedly connected to the reinforcement steel bar assembly; the reinforcement plate 2 is formed by concrete injected into the reinforcement area through the casting hole 402, and the reinforcement plate 2 is connected to the floor slab 4 through a plurality of embedded bars 1 to form an integrated structure.

[0021] The embedded steel bar 1 forms a reliable tie between the floor slab 4 and the reinforcement plate 2, connecting the reinforcement plate 2 and the floor slab 4 into a whole, so as to form reinforcement at the bottom of the floor slab 4 through the reinforcement plate 2. The reinforcement plate 2 is cast by concrete and has a built-in reinforcement steel bar assembly. The reinforced concrete structure can ensure that the reinforcement plate 2 has sufficient structural strength and bearing capacity to meet the reinforcement bearing requirements.

[0022] By setting the pouring holes 402, after the pouring formwork 3 is set up, grouting of grouting materials such as concrete can be performed from top to bottom, so as to form a reinforced plate 2 with high structural strength in the reinforced area, which greatly reduces the construction difficulty of reinforcing the bottom of the floor slab 4. The pouring formwork 3 is set up according to the reinforced area of ​​the floor slab 4 using conventional procedures, so that a closed reinforced area is formed between the pouring formwork 3 and the floor slab 4, and the setting process of the pouring formwork 3 is not repeated here.

[0023] The reinforcing steel bar assembly includes bottom bars 501 and longitudinal bars 502. Several bottom bars 501 are arranged at intervals along the length direction of the floor slab 4, and several longitudinal bars 502 are arranged at intervals along the width direction of the floor slab 4. Several bottom bars 501 and several longitudinal bars 502 are cross-connected to form a steel mesh structure, and the lower ends of several embedded bars 1 are connected to the steel mesh structure.

[0024] The bottom reinforcement 501 and the longitudinal reinforcement 502 are vertically connected to form a steel mesh structure with high structural strength, which can ensure the bearing capacity of the reinforcement plate 2 and the reinforcement effect of the floor 4. The arrangement spacing of the bottom reinforcement 501 and the longitudinal reinforcement 502 can be adaptively adjusted according to the actual reinforcement bearing requirements.

[0025] The lower ends of the plurality of embedded bars 1 are bent to form a bent portion 101 parallel to the steel mesh structure, and the bent portion 101 is connected to the cross-connection node of the bottom bar 501 and the longitudinal bar 502 .

[0026] The bent portion 101 is bent at the bottom of the cross-connection node of the bottom reinforcement 501 and the longitudinal reinforcement 502. The bent portion 101, the bottom reinforcement 501 and the longitudinal reinforcement 502 are welded or tied together to ensure the connection reliability between the embedded reinforcement 1 and the reinforced steel bar assembly and the reinforced plate 2.

[0027] Each of the bottom bars 501 is arranged perpendicular to the edge beam 6 at the edge of the floor slab 4 , and the end of the bottom bar 501 is anchored in the edge beam 6 .

[0028] The bottom reinforcement 501 is anchored into the side beam 6 so that the reinforcement plate 2 forms a whole with the side beam 6 after being formed, thereby connecting the reinforcement plate 2, the side beam 6 and the floor slab 4 into a whole, further ensuring the reinforcement effect of the floor slab 4.

[0029] Preferably, since the side beams 6 are usually arranged circumferentially along the edges of the floor slab 4 , both ends of the longitudinal reinforcement 502 can also be anchored into the side beams 6 on the corresponding sides, thereby further improving the reinforcement effect of the floor slab 4 .

[0030] The length of the bottom reinforcement 501 anchored in the edge beam 6 is not less than 15d (i.e. 15 times the diameter of the bottom reinforcement 501 ), which ensures the anchoring reliability of the bottom reinforcement 501 in the edge beam 6 , thereby ensuring the reinforcement effect of the floor slab 4 .

[0031] The floor slab 4 is formed with air holes 403 , the lower ends of the air holes 403 are connected to the reinforcement area, and the upper ends of the air holes 403 pass through the top surface of the floor slab 4 .

[0032] The air holes 403 can not only discharge the air in the reinforcement area during grouting to ensure the casting density of the reinforcement plate 2, but can also be used to observe the casting situation. When the air holes 403 overflow, the grouting can be stopped.

[0033] The thickness of the reinforcement plate 2 is not less than 40 mm, and the reinforcement steel bar assembly is arranged in the middle of the reinforcement plate 2 in the thickness direction.

[0034] The thickness of the reinforcement plate 2 can be adjusted according to the actual working conditions. Under the condition of ensuring the structural strength and bearing capacity, the minimum thickness is only 40 mm, which can meet the construction requirements of a smaller reinforcement section.

[0035] The depth of the embedded rebar 1 in the floor slab 4 is not less than 80 mm, the diameter of the embedded rebar 1 is not less than 8 mm, and the spacing between the embedded rebars 1 is 600 mm.

[0036] The implantation depth of the embedded reinforcement 1 should be greater than or equal to 80 mm to ensure the anchoring strength of the embedded reinforcement 1 and the reliability of its connection between the floor slab 4 and the reinforcement plate 2.

[0037] Please see attached Figure 1 , the construction method of the utility model is:

[0038] A reinforcement hole 401 is provided at the bottom of the floor 4. The diameter of the reinforcement hole 401 is slightly larger than the width of the reinforcement 1. The depth of the reinforcement hole 401 is 80 mm. The spacing of the reinforcement holes 401 is 600 mm. A steel bar with a diameter of 8 mm is used as the reinforcement 1. The reinforcement 1 is anchored to the bottom of the floor 4 through the reinforcement hole 401. The reinforcement 1 and the reinforcement hole 401 are sealed and fixed by waterproof mortar to ensure reliable anchoring of the reinforcement 1. The lower end of the reinforcement 1 is bent 90° to form a bent portion 101.

[0039] Casting holes 402 are opened on the floor slab 4 at intervals of 2 m according to casting requirements, and ventilation holes 403 are opened near the edge beams 6 . Both the casting holes 402 and the ventilation holes 403 are through holes along the thickness direction of the floor slab 4 .

[0040] Anchor holes are opened in the side beam 6 at the bottom of the floor 4 according to the layout position of the bottom reinforcement 501, and the end of the bottom reinforcement 501 is anchored in the side beam 6. The depth of the bottom reinforcement 501 anchored in the side beam 6 is not less than 15d. The fixing method of the bottom reinforcement 501 and the side beam 6 is the same as the fixing method of the embedded reinforcement 1 and the floor 4, which will not be repeated here.

[0041] The bottom reinforcement 501 and the longitudinal reinforcement 502 are tied according to the design requirements to form a reinforcement steel bar assembly of the steel mesh structure. At the same time, the bent portion 101 of the implanted reinforcement 1 is tied at the cross-connection node of the bottom reinforcement 501 and the longitudinal reinforcement 502 to ensure the integrity of the steel bar structure. The specifications of the bottom reinforcement 501 and the longitudinal reinforcement 502 can be adaptively selected according to the load requirements of the reinforcement to ensure that the reinforcement steel bar assembly has a high structural strength, so as to achieve the purpose of reinforcing the floor 4 from the bottom.

[0042] The casting formwork 3 is set up under the floor slab 4, and the casting formwork 3 can be supported and reinforced by means of scaffolding or the like to form a reinforcement area. Concrete is configured according to the reinforcement requirements, and the concrete is poured into the reinforcement area through the casting hole 402, and grouting is performed. The air in the reinforcement area is discharged through the vent hole 403. When the vent hole 403 overflows with grout, the casting is completed to form a reinforcement plate 2. The reinforcement plate 2 is connected to the floor slab 4 through the embedded reinforcement 1 and concrete to form an integral structure, and the bearing capacity is provided by the reinforced steel bar assembly and concrete to achieve the reinforcement effect.

[0043] After the concrete reaches the designed strength, the casting formwork 3 is removed, and conventional procedures such as curing can be performed on the reinforcement plate 2 as required.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A floor bottom reinforcement structure, characterized by: The invention comprises a reinforcing steel bar assembly, a reinforcing bar (1), a reinforcing plate (2) and a casting template (3); the casting template (3) is set up below the floor slab (4), a reinforcing area is formed between the bottom surface of the floor slab (4) and the top surface of the casting template (3), and the reinforcing steel bar assembly is tied and fixed in the reinforcing area; a plurality of reinforcing bar holes (401) are formed at intervals in the floor slab (4), and the lower ends of the reinforcing bar holes (401) penetrate downward through the bottom surface of the floor slab (4) and are connected to the reinforcing area; a plurality of casting holes (402) are formed at intervals in the floor slab (4), and the casting holes (403) are formed at intervals in the floor slab (4). The lower end of (402) passes through the bottom surface of the floor slab (4) downward and is connected to the reinforcement area, and the upper end of the casting hole (402) passes through the top surface of the floor slab (4) upward; the upper ends of a plurality of embedded bars (1) are respectively inserted into a plurality of embedded bars holes (401), and the lower ends of a plurality of embedded bars (1) extend into the reinforcement area and are fixedly connected to the reinforcement steel bar assembly; the reinforcement plate (2) is formed by concrete injected into the reinforcement area through the casting hole (402), and the reinforcement plate (2) is connected to the floor slab (4) through a plurality of embedded bars (1) to form an integrated structure.

2. The floor bottom reinforcement structure according to claim 1 is characterized in that: The reinforcing steel bar assembly comprises bottom bars (501) and longitudinal bars (502), wherein a plurality of bottom bars (501) are arranged at intervals along the length direction of the floor slab (4), and a plurality of longitudinal bars (502) are arranged at intervals along the width direction of the floor slab (4). The plurality of bottom bars (501) and the plurality of longitudinal bars (502) are cross-connected to form a steel mesh structure, and the lower ends of the plurality of embedded bars (1) are connected to the steel mesh structure.

3. The floor bottom reinforcement structure according to claim 2 is characterized in that: The lower ends of the plurality of embedded bars (1) are bent to form a bent portion (101) parallel to the steel mesh structure, and the bent portion (101) is connected to the cross-connection node of the bottom bar (501) and the longitudinal bar (502).

4. The floor bottom reinforcement structure according to claim 2 or 3, characterized in that: Each of the bottom bars (501) is arranged perpendicular to the edge beam (6) at the edge of the floor slab (4), and the end of the bottom bar (501) is anchored in the edge beam (6).

5. The floor bottom reinforcement structure according to claim 4 is characterized in that: The length of the bottom reinforcement (501) anchored in the side beam (6) is not less than 15d.

6. The floor bottom reinforcement structure according to claim 4 is characterized in that: The floor slab (4) is formed with an air hole (403), the lower end of the air hole (403) is connected to the reinforcement area, and the upper end of the air hole (403) passes through the top surface of the floor slab (4).

7. The floor bottom reinforcement structure according to claim 1 is characterized in that: The thickness of the reinforcement plate (2) is not less than 40 mm, and the reinforcement steel bar assembly is arranged in the middle of the reinforcement plate (2) in the thickness direction.

8. The floor bottom reinforcement structure according to claim 1 is characterized in that: The depth of the embedded reinforcement (1) in the floor slab (4) is not less than 80 mm, the diameter of the embedded reinforcement (1) is not less than 8 mm, and the spacing between the embedded reinforcement (1) is 600 mm.

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