Prefabricated shock-absorbing floor

Abstract

The present application relates to a kind of fabricated shock-absorbing floor, including upper floor, lower floor floor shock-absorbing connector being arranged between upper floor and lower floor;The floor shock-absorbing connector includes connecting plate, sealing plate, natural rubber block, the connecting plate is divided into upper connecting plate, lower connecting plate, the sealing plate is divided into upper sealing plate, lower sealing plate, the natural rubber block is arranged between upper sealing plate and lower sealing plate, the upper connecting plate is set above upper sealing plate, the lower connecting plate is set below lower sealing plate;The upper floor is set with first channel steel around below, the lower floor is set with second channel steel around below, and polytetrafluoroethylene plate is further arranged between the lower floor and second channel steel;The fabricated shock-absorbing floor is simple in structure, easy to manufacture, and clear and reliable in operation mechanism.Floor shock-absorbing connector is arranged between upper floor and lower floor, and play the role of weakening horizontal earthquake.

Description

Technical Field

[0001] This invention relates to the field of vibration damping components, specifically to a prefabricated vibration damping floor slab. Background Technology

[0002] With the nation's vigorous promotion of green building development, prefabricated building structures, with their modular construction, industrialized building, and standardized building features, coupled with advantages such as convenient construction, resource saving, and reduced labor, are receiving increasing attention and possess broad development prospects and application value. Building floor slabs, as the main load-bearing and load-transferring structures, must not only meet the strength requirements under vertical loads but also possess a certain degree of stiffness to ensure the stability of the overall structure. Compared with traditional cast-in-place structural systems, the advantages of prefabricated structures are obvious. By dividing the structure into components for centralized factory production, production efficiency is improved while ensuring the quality of the project itself. Simultaneously, the reduction in formwork and on-site wet concrete work significantly increases construction speed, effectively shortens the structural construction period, and improves the investment recovery rate and economic benefits.

[0003] In high-rise and super high-rise building seismic isolation systems, passive seismic isolation technologies are mostly adopted. The main methods include seismic isolation, energy dissipation, and tuned seismic isolation. Common methods include: a) Laminated rubber bearing seismic isolation technology, which involves installing a laminated rubber bearing seismic isolation system between the superstructure and the foundation (or substructure) to artificially alter the vibration characteristics of the structural system, thus "isolating" the superstructure from the foundation and "cutting off" the effective transmission path of seismic energy to the superstructure; b) Adding buckling-restrained braces, viscous dampers, or other forms of dampers to the superstructure to dissipate the input seismic energy and ensure structural safety; c) Installing an additional substructure with mass, stiffness, and damping at a certain location in the structure, whose dynamic performance is related to the original structural system, causing a redistribution of seismic energy between the original structure and the additional substructure, reducing the vibration of the original structure.

[0004] In practical engineering, due to limitations in application requirements, the locations available for installing energy dissipation devices are often very limited, such as in reinforced concrete shear wall structures or other structures that require high permeability within the building surface. Therefore, in many cases, certain components, such as coupling beams or parts of shear wall components, are chosen as displacement energy dissipation components, while research on using floor slabs for vibration reduction is relatively limited. Summary of the Invention

[0005] In order to address the shortcomings of existing floor slabs that do not have vibration damping capabilities.

[0006] The present invention discloses a prefabricated vibration-damping floor slab, comprising an upper floor slab, a lower floor slab, and a floor slab vibration-damping connector disposed between the upper and lower floor slabs; the floor slab vibration-damping connector comprises a connecting plate, a sealing plate, and a natural rubber block; the connecting plate is divided into an upper connecting plate and a lower connecting plate, the sealing plate is divided into an upper sealing plate and a lower sealing plate, the natural rubber block is disposed between the upper sealing plate and the lower sealing plate, the upper connecting plate is disposed above the upper sealing plate, and the lower connecting plate is disposed below the lower sealing plate; a first channel steel is disposed around the lower perimeter of the upper floor slab, a second channel steel is disposed around the lower perimeter of the lower floor slab, and a polytetrafluoroethylene (PTFE) sheet is disposed between the lower floor slab and the second channel steel.

[0007] Furthermore, the first channel steel includes a first channel steel connecting plate, a second channel steel connecting plate, and a third channel steel connecting plate. The first and third channel steel connecting plates are arranged vertically and parallel to each other, while the second channel steel connecting plate is arranged horizontally. The upper end of the first channel steel connecting plate is connected to the left side of the second channel steel connecting plate, and the upper end of the third channel steel connecting plate is connected to the right side of the second channel steel connecting plate. Multiple bolt holes are provided on the upper part of the second channel steel connecting plate, and the upper floor slab is connected to the second channel steel connecting plate by connecting bolts.

[0008] Furthermore, the second channel steel includes a fourth channel steel connecting plate, a fifth channel steel connecting plate, and a sixth channel steel connecting plate. The fourth and sixth channel steel connecting plates are arranged vertically and parallel to each other, while the fifth channel steel connecting plate is arranged horizontally. The upper end of the fourth channel steel connecting plate is connected to the left side of the fifth channel steel connecting plate, and the upper end of the sixth channel steel connecting plate is connected to the right side of the fifth channel steel connecting plate. A lower floor slab is provided above the fifth channel steel connecting plate, and a polytetrafluoroethylene (PTFE) sheet is also provided between the lower floor slab and the fifth channel steel connecting plate.

[0009] Furthermore, a square steel is provided below the second channel steel, and a pad is provided below the square steel.

[0010] Furthermore, the filler is concrete.

[0011] Furthermore, a sliding joint is provided between the lower floor slab and the fifth channel steel connecting plate.

[0012] The beneficial effects of this invention are as follows: The prefabricated damping floor slab provided by this invention has a simple structure, is easy to manufacture, and has a clear and reliable operating mechanism. Compared with the prior art, the features and beneficial effects of this invention are as follows: The floor slab damping connector is placed between the upper and lower floor slabs, which helps to reduce horizontal earthquakes. The polytetrafluoroethylene (PTFE) sheet is used to support the lower floor slab, and at the same time, it can reduce friction when the lower and upper floor slabs undergo relative displacement. A certain gap is left between the lower floor slab and the square steel to prevent collision during relative movement, and it generates displacement and dissipates energy during damping. There is no need to set up an anti-seismic controller. Instead, the sliding friction of the floor slab damping connector is used as a switch to control sliding. Under normal use conditions, the horizontal force does not exceed the sliding friction, and the lower and upper floor slabs do not slide relative to each other. Under seismic action, the horizontal force exceeds the sliding friction, and the lower and upper floor slabs slide relative to each other. The prefabricated damping floor slab has a small seismic response and protects the items above it.

[0013] The present invention will be further described in detail below with reference to the embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the front structure of the floor slab frame.

[0015] Figure 2 This is a schematic diagram of the floor slab vibration damping connection structure.

[0016] Figure 3 This is a floor plan of the lower floor slab.

[0017] Figure 4 This is a floor plan of the upper floor slab.

[0018] Figure 5 This is a structural schematic diagram of a channel steel.

[0019] Figure 6 This is a schematic diagram showing the detailed structure of the sliding joint.

[0020] In the diagram: 1. Upper floor slab; 2. Lower floor slab; 3. Connecting plate; 3-1. Upper connecting plate; 3-2. Lower connecting plate; 4. Sealing plate; 4-1. Upper sealing plate; 4-2. Lower sealing plate; 5. Natural rubber block; 6. First channel steel; 6-1. First channel steel connecting plate; 6-2. Second channel steel connecting plate; 6-3. Third channel steel connecting plate; 7. Second channel steel; 7-1. Fourth channel steel connecting plate; 7-2. Fifth channel steel connecting plate; 7-3. Sixth channel steel connecting plate; 8. Square steel; 9. Polytetrafluoroethylene (PTFE) sheet; 9-1. Transverse PTFE sheet; 9-2. Longitudinal PTFE sheet; 10. Pad; 11. Connecting bolt; 12. Bolt hole; 13. Sliding joint. Detailed Implementation

[0021] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the specific implementation methods, structural features and effects of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "aligned", "overlapping", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0025] Example 1

[0026] This embodiment provides a method such as Figures 1-5 The prefabricated vibration-damping floor slab shown includes an upper floor slab 1, a lower floor slab 2, and a floor slab vibration-damping connector disposed between the upper floor slab 1 and the lower floor slab 2. The floor slab vibration-damping connector includes a connecting plate 3, a sealing plate 4, and a natural rubber block 5. The connecting plate 3 is divided into an upper connecting plate 3-1 and a lower connecting plate 3-2, and the sealing plate 4 is divided into an upper sealing plate 4-1 and a lower sealing plate 4-2. The natural rubber block 5 is disposed between the upper sealing plate 4-1 and the lower sealing plate 4-2. The upper connecting plate 3-1 is disposed above the upper sealing plate 4-1. The connecting plate 3-2 is located below the lower sealing plate 4-2; the upper floor slab 1 is provided with first channel steel 6 around its lower perimeter, and the lower floor slab 2 is provided with second channel steel 7 around its lower perimeter. That is, there are four first channel steels 6 and four second channel steels 7. The four first channel steels 6 are located below the upper floor slab 1, and the four second channel steels 7 are located below the lower floor slab 2. A polytetrafluoroethylene (PTFE) plate 9 is also provided between the lower floor slab 2 and the second channel steels 7. Since there are four second channel steels 7, there are also four corresponding PTFE plates 9.

[0027] The specific connection method between the floor slab damping connector and the upper floor slab 1 and the lower floor slab 2 is as follows: the natural rubber block 5 is connected to the upper sealing plate 4-1 and the lower sealing plate 4-2 by adhesive; the upper sealing plate 4-1 is connected to the upper connecting plate 3-1 and the upper floor slab 1 by connecting screws 11. Therefore, screw connection holes are provided on the upper sealing plate 4-1, the upper connecting plate 3-1, and the upper floor slab 1. The lower sealing plate 4-2 is connected to the lower connecting plate 3-2 and the lower floor slab 2 by connecting screws 11. Therefore, screw connection holes are also provided on the lower sealing plate 4-2, the lower connecting plate 3-2, and the lower floor slab 2.

[0028] Furthermore, the first channel steel 6 includes a first channel steel connecting plate 6-1, a second channel steel connecting plate 6-2, and a third channel steel connecting plate 6-3. The first channel steel connecting plate 6-1 and the third channel steel connecting plate 6-3 are arranged vertically and parallel to each other, while the second channel steel connecting plate 6-2 is arranged horizontally. The upper end of the first channel steel connecting plate 6-1 is connected to the left side of the second channel steel connecting plate 6-2, and the upper end of the third channel steel connecting plate 6-3 is connected to the right side of the second channel steel connecting plate 6-2. A plurality of bolt holes 12 are provided above the second channel steel connecting plate 6-2, and the upper floor slab 1 is connected to the second channel steel connecting plate 6-2 by connecting bolts 11.

[0029] Furthermore, the second channel steel 7 includes a fourth channel steel connecting plate 7-1, a fifth channel steel connecting plate 7-2, and a sixth channel steel connecting plate 7-3. The fourth channel steel connecting plate 7-1 and the sixth channel steel connecting plate 7-3 are arranged vertically and parallel to each other, while the fifth channel steel connecting plate 7-2 is arranged horizontally. The upper end of the fourth channel steel connecting plate 7-1 is connected to the left side of the fifth channel steel connecting plate 7-2, and the upper end of the sixth channel steel connecting plate 7-3 is connected to the right side of the fifth channel steel connecting plate 7-2. A lower floor slab 2 is provided above the fifth channel steel connecting plate 7-2, and a polytetrafluoroethylene (PTFE) plate 9 is also provided between the lower floor slab 2 and the fifth channel steel connecting plate 7-2.

[0030] Furthermore, a square steel 8 is provided below the second channel steel 7. The square steel 8 is used to connect the first channel steel 6 and the second channel steel 7. A pad 10 is provided below the square steel 8. The pad 10 is used to support the upper overall structure.

[0031] Furthermore, the filler is concrete or other building filler material.

[0032] Furthermore, a sliding joint 13 is provided between the lower floor slab 2 and the fifth channel steel connecting plate 7-2, which is used to generate displacement and dissipate energy during vibration reduction.

[0033] Operating mechanism:

[0034] The floor slab is an important component of the main structure. Under seismic or wind loads, the floor slab vibrates horizontally in the structural plane along with the structural beams and columns. Natural rubber blocks 5 are installed between the upper floor slab 1 and the lower floor slab 2. These blocks have both elastic characteristics, similar to springs, and viscous characteristics, similar to viscous liquids, thus possessing excellent shock absorption properties.

[0035] Based on the stiffness and mass characteristics of the main structure in each major vibration direction, the overall stiffness characteristics of the natural rubber block 5 are roughly determined. Then, the specific length, height, width, and material parameters of the natural rubber block 5, the transverse polytetrafluoroethylene plate 9-1, and the longitudinal polytetrafluoroethylene plate 9-2 are further determined to form a modular layout and installation system. This facilitates multi-zone vibration reduction and improves installation accuracy and efficiency.

[0036] When the aforementioned parameters are appropriately set, when the floor slab experiences horizontal vibration in any direction along with the beams and columns of the main structure, the sliding friction of the natural rubber block 5 acts as a switch to control the sliding. Under normal operating conditions, the horizontal force does not exceed the sliding friction, and relative sliding occurs between the lower floor slab 2 and the upper floor slab 1 of the seismic isolation floor slab. For example... Figure 1 As shown, under seismic action, the horizontal force exceeds the slip friction, and the lower floor slab 2 and the upper floor slab 1 of the seismic isolation floor slab slip relative to each other. The transverse polytetrafluoroethylene plate 9-1 and the longitudinal polytetrafluoroethylene plate 9-2 can reduce the friction between the lower floor slab 2 and the channel steel, which plays a certain protective role for the structure. In this way, the seismic response of the seismic isolation composite floor slab is small, thereby achieving the purpose of structural vibration reduction and protecting the items above.

[0037] Step 1: Adhere the natural rubber block 5 to the sealing plate 4 using an adhesive. The sealing plate 4 is equipped with connecting bolts 11.

[0038] Step 2: Fix the specimen prepared in Step 1 into the reserved first steel plate groove 6 and second steel plate groove 7 of the upper floor slab 1 and lower floor slab 2, and connect them with connecting bolts 11. The sliding friction of the natural rubber block 5 is used as a switch to control the sliding, which is used for energy dissipation and vibration reduction.

[0039] Step 3: The fifth channel steel connecting plate 7-2 of the second channel steel 7 is connected to the lower floor slab 2 by connecting bolts 11, wherein bolt holes 12 are reserved on the fifth channel steel connecting plate 7-2. A certain sliding gap 13 is left between the fifth channel steel connecting plate 7-2 of the second channel steel 7 and the lower floor slab 2, which is used for displacement and energy dissipation during vibration reduction.

[0040] Step 4: Fill the space between the fourth channel steel connecting plate 7-1 of the lower floor slab 2 and the second channel steel 7 with transverse polytetrafluoroethylene plate 9-1 and longitudinal polytetrafluoroethylene plate 9-2 to support the lower floor slab 2. At the same time, when the upper floor slab 1 and the lower floor slab 2 undergo relative displacement, reduce the friction between the lower floor slab 2 and the second channel steel 7.

[0041] Step 5: Connect the prefabricated damping floor slabs made above to the main structural frame to fix and constrain the prefabricated damping plates inside.

[0042] In summary, this prefabricated vibration-damping floor slab has a simple structure, is easy to manufacture, and has a clear and reliable operating mechanism. Compared with existing technologies, the features and beneficial effects of this invention are as follows: The adhesive rubber block placed between the top and bottom slabs isolates horizontal earthquakes. The polytetrafluoroethylene (PTFE) plate supports the bottom slab and reduces friction when relative displacement occurs between the bottom and top slabs. A certain gap is maintained between the bottom slab and the outer frame to prevent collisions during relative movement, allowing for displacement and energy dissipation during vibration damping. No vibration damping controller is needed; instead, the sliding friction of the adhesive rubber block acts as a switch to control sliding. Under normal operating conditions, the horizontal force does not exceed the sliding friction, and the bottom and top slabs do not slide relative to each other. Under seismic action, the horizontal force exceeds the sliding friction, causing relative sliding between the bottom and top slabs. The prefabricated vibration-damping floor slab exhibits a small seismic response, protecting items above it.

[0043] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A fabricated vibration damping floor, characterized by: The utility model provides a floor vibration damping connecting piece is arranged between the upper floor (1) and the lower floor (2), and the floor vibration damping connecting piece comprises a connecting plate (3), a sealing plate (4) and a natural rubber block (5), the connecting plate (3) is divided into an upper connecting plate (3-1) and a lower connecting plate (3-2), the sealing plate (4) is divided into an upper sealing plate (4-1) and a lower sealing plate (4-2), the natural rubber block (5) is arranged between the upper sealing plate (4-1) and the lower sealing plate (4-2), the upper connecting plate (3-1) is arranged above the upper sealing plate (4-1), and the lower connecting plate (3-2) is arranged below the lower sealing plate (4-2), a first channel steel (6) is arranged around the lower side of the upper floor (1), a second channel steel (7) is arranged around the lower side of the lower floor (2), and a polytetrafluoroethylene plate (9) is further arranged between the lower floor (2) and the second channel steel (7).

2. The fabricated vibration damping floor panel of claim 1, wherein: The first channel steel (6) comprises a first channel steel connecting plate (6-1), a second channel steel connecting plate (6-2) and a third channel steel connecting plate (6-3), the first channel steel connecting plate (6-1) and the third channel steel connecting plate (6-3) are vertically and parallelly arranged, the second channel steel connecting plate (6-2) is horizontally arranged, the upper end of the first channel steel connecting plate (6-1) is connected to the left side of the second channel steel connecting plate (6-2), the upper end of the third channel steel connecting plate (6-3) is connected to the right side of the second channel steel connecting plate (6-2), a plurality of bolt holes (12) are arranged above the second channel steel connecting plate (6-2), and the upper floor (1) and the second channel steel connecting plate (6-2) are connected through connecting bolts (11).

3. The fabricated vibration damping floor panel of claim 1, wherein: The second channel steel (7) comprises a fourth channel steel connecting plate (7-1), a fifth channel steel connecting plate (7-2) and a sixth channel steel connecting plate (7-3), the fourth channel steel connecting plate (7-1) and the sixth channel steel connecting plate (7-3) are vertically and parallelly arranged, the fifth channel steel connecting plate (7-2) is horizontally arranged, the upper end of the fourth channel steel connecting plate (7-1) is connected to the left side of the fifth channel steel connecting plate (7-2), the upper end of the sixth channel steel connecting plate (7-3) is connected to the right side of the fifth channel steel connecting plate (7-2), the lower floor (2) is arranged above the fifth channel steel connecting plate (7-2), and a polytetrafluoroethylene plate (9) is further arranged between the lower floor (2) and the fifth channel steel connecting plate (7-2).

4. The fabricated vibration damping floor panel of claim 1, wherein: A square steel (8) is further arranged below the second channel steel (7), and a cushion plate (10) is arranged below the square steel (8).

5. The fabricated vibration damping floor panel of claim 1, wherein: A sliding joint (13) is arranged between the lower floor (2) and the fifth channel steel connecting plate (7-2).

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