High-rise building concrete slab array type shock insulation and noise reduction device and method

Abstract

The invention discloses a high-rise building concrete slab array type shock insulation and noise reduction device and method.The high-rise building concrete slab array type shock insulation and noise reduction device comprises an upper connecting plate, a lower connecting plate and an array type shock insulation unit, the array type shock insulation unit comprises a lead core rubber support, and eight evenly-distributed magnetorheological dampers are arranged on the periphery of the lead core rubber support in a surrounding mode; belleville spring sets are evenly distributed on the surface of the top of the upper connecting plate, and polyurethane limiting blocks are arranged on the peripheries of the belleville spring sets. During vibration, high-frequency vibration energy is transmitted to the array type vibration isolation units through the upper connecting plate, the belleville springs absorb the high-frequency vibration energy, damping is carried out through the eight 30-degree magneto-rheological dampers inclining towards the periphery during downward pressing, a sound wave propagation path is blocked through impedance gradient changes of the high-density rubber layer, the porous aluminum foam layer and the beam damping layer, and the vibration isolation effect is achieved. Vibration and energy dispersion and offset are achieved through the array type shock isolation units, and the shock isolation and noise reduction effects are remarkably improved through the spatial distribution mode of the shock isolation units arranged in the honeycomb shape.

Description

Technical Field

[0001] The present invention relates to the technical field of building vibration reduction and noise reduction, and in particular to an array-type vibration isolation and noise reduction device and method for concrete slabs of a high-rise building. Background Art

[0002] Traditional isolation and noise reduction technologies often use rubber isolation bearings or steel spring isolators, which suffer from limited load-bearing capacity, insufficient durability, and suboptimal noise reduction. This is particularly true in high-rise industrial buildings, where equipment vibrations are transmitted through concrete floors, causing structural vibration and secondary noise radiation, seriously impacting the production environment and equipment accuracy.

[0003] Existing technologies primarily isolate buildings as a whole, but have limited effectiveness in isolating and reducing the noise of industrial building floors. For example, CN202420950568.9 describes a floating floor structure for sound-absorbing and vibration-reducing large equipment rooms in public buildings. While the floating isolation pad effectively isolates and absorbs vibration and noise generated by equipment operation, it is essentially a composite layer of multiple panels. This makes it difficult to meet the high load and high damping requirements of high-rise industrial buildings. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-rise building concrete slab array type seismic isolation and noise reduction device and method in order to solve the above problems.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides an array-type seismic isolation and noise reduction device for concrete slabs of high-rise buildings, comprising an upper connecting plate, a lower connecting plate, and an array-type seismic isolation unit. The array-type seismic isolation unit is located between the upper connecting plate and the lower connecting plate, and the array-type seismic isolation unit is arranged in a honeycomb shape. The array-type seismic isolation unit includes a lead rubber bearing, and 8 evenly distributed magnetorheological dampers are arranged around the lead rubber bearing. The top surface of the upper connecting plate is provided with an evenly distributed disc spring group, and polyurethane limit blocks are provided around the disc spring group.

[0007] As an optimal technical solution for an array-type seismic isolation and noise reduction device for concrete slabs of high-rise buildings according to the present invention, the upper connecting plate includes a high-density rubber layer, a porous aluminum foam layer and a constrained damping layer. The high-density rubber layer is 30 mm thick, the porous aluminum foam layer is 20 mm thick, and the constrained damping layer is 10 mm thick. The high-density rubber layer is connected to the constrained damping layer through the porous aluminum foam layer, and the high-density rubber layer is located at the top.

[0008] As an optimal technical solution for the array-type seismic isolation and noise reduction device of a high-rise building concrete slab of the present invention, the top of the magnetorheological damper is connected to the upper connecting plate, the bottom is connected to the lower connecting plate, and the eight magnetorheological dampers are inclined at an angle of 30° to all sides.

[0009] As a preferred technical solution of the high-rise building concrete slab array isolation and noise reduction device of the present invention, the lead rubber bearing has a diameter of 200 mm and a stiffness coefficient of 1.2 kN / mm.

[0010] As a preferred technical solution of the high-rise building concrete slab array type seismic isolation and noise reduction device of the present invention, the disc spring group uses stainless steel disc springs in groups of 8 pieces, with a total stiffness of 0.8kN / mm.

[0011] As a preferred technical solution of the high-rise building concrete slab array type seismic isolation and noise reduction device of the present invention, the magnetorheological damper has a maximum output of 5kN and a current adjustment range of 0-2A.

[0012] As a preferred technical solution of the present invention for a high-rise building concrete slab array type seismic isolation and noise reduction device, the bottom of the lower connecting plate is provided with embedded anchor bolts connected to the building floor, and the top surface is provided with a shear key groove.

[0013] As a preferred technical solution of the high-rise building concrete slab array isolation and noise reduction device of the present invention, the polyurethane limit blocks are symmetrically arranged around the disc spring group, and there is a 10mm gap between the polyurethane limit blocks and the disc spring group.

[0014] As an optimal technical solution for the array-type seismic isolation and noise reduction device of a high-rise building concrete slab of the present invention, the bottom of the magnetorheological damper is hinged to the lower connecting plate, and a docking plate is hingedly installed at the output end of the magnetorheological damper; the docking plate is connected to the upper connecting plate.

[0015] As a preferred technical solution of the array-type seismic isolation and noise reduction device for concrete slabs of high-rise buildings of the present invention, a sliding groove is provided at the bottom of the upper connecting plate; the sliding groove includes a transverse portion and a longitudinal portion; a slider is installed in the transverse portion and the longitudinal portion, and a groove is provided on the side of the slider. Guide bars are provided in the transverse portion and the longitudinal portion, and the guide bars are adapted to the groove;

[0016] A partition plate is provided between the transverse portion and the longitudinal portion, and the partition plate is detachably connected to the upper connecting plate; a top hinge seat is installed on the slider, and the top hinge seat is connected to the output portion of the magnetorheological damper.

[0017] A noise reduction method for a high-rise building concrete slab array type seismic isolation and noise reduction device, characterized by comprising the following steps:

[0018] Step 1: During installation, connect the embedded anchor bolts to the building floor;

[0019] Step 2: Lay the array isolation unit on the lower connecting plate:

[0020] First, the lead rubber bearing is fixed and installed, and then eight magnetorheological dampers are installed on the four sides of the lead rubber bearing; the lead rubber bearing provides the main vertical stiffness and horizontal reset capability;

[0021] Pre-open a shear keyway on the lower connecting plate;

[0022] Step 3, assemble the disc spring:

[0023] First, weld the concentric shaft to the lower connecting plate, and then sleeve the stainless steel disc springs in groups of 8 onto the concentric shaft; repeat the installation of multiple disc springs;

[0024] Step 4: Install four sets of polyurethane limit blocks on the circumference of each disc spring;

[0025] When in use, the vibration of the equipment first passes through the upper connecting plate, then through the 30mm high-density rubber layer, the 20mm porous aluminum foam layer and the 10mm constrained damping layer, forming an impedance gradient change;

[0026] Secondly, the force is transmitted to the array-type seismic isolation unit through the upper connecting plate. The lead rubber bearing provides the main vertical stiffness and horizontal reset capability. The disc spring absorbs high-frequency vibration energy, and when pressing down, it is reduced by eight magnetorheological dampers tilted 30 degrees in all directions.

[0027] The arrayed seismic isolation unit achieves energy dispersion and offset of vibration.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] During vibration, the present invention transmits energy to the arrayed seismic isolation unit through the upper connecting plate. The disc spring absorbs high-frequency vibration energy and, when pressed downward, performs shock absorption through eight magnetorheological dampers inclined 30 degrees in all directions. The lead rubber bearing provides the main vertical stiffness and horizontal reset capability. The impedance gradient change of the high-density rubber layer, porous aluminum foam layer and beam damping layer blocks the sound wave propagation path. The arrayed seismic isolation unit realizes vibration and energy dispersion and offset. The triple seismic isolation mechanism of the lead rubber bearing, disc spring group and magnetorheological damper works in coordination, and the spatial distribution of the honeycomb-shaped seismic isolation units significantly improves the seismic isolation and noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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:

[0031] Figure 1 This is a structural perspective diagram of the high-rise building concrete slab array type seismic isolation and noise reduction device of the present invention;

[0032] Figure 2 This is an exploded view of the high-rise building concrete slab array type seismic isolation and noise reduction device of the present invention;

[0033] Figure 3 It is a schematic structural diagram of the upper connecting plate of the present invention;

[0034] Figure 4 This is a structural schematic diagram of the array type seismic isolation unit of the present invention;

[0035] Figure 5 This is a schematic diagram of the arrangement of the array type seismic isolation units of the present invention;

[0036] Figure 6 It is a structural schematic diagram of the array type seismic isolation unit on the upper connecting plate of the present invention;

[0037] Figure 7 Schematic diagram of the bottom of the upper connecting plate of the present invention;

[0038] Figure 8 for Figure 7 A magnified view of part A;

[0039] In the figure: 1. Upper connecting plate; 11. High-density rubber layer; 12. Porous aluminum foam layer; 13. Constrained damping layer; 14. Sliding groove; 141. Transverse part; 142. Longitudinal part; 15. Guide bar; 2. Lower connecting plate; 21. Embedded anchor bolt; 22. Shear key groove; 3. Arrayed seismic isolation unit; 31. Lead rubber bearing; 32. Magnetorheological damper; 33. Disc spring group; 34. Polyurethane limit block; 35. Docking plate; 36. Slider; 37. Top hinge seat. DETAILED DESCRIPTION

[0040] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0041] In the drawings, the same reference numerals all refer to the same components.

[0042] Example 1

[0043] like Figure 1-5As shown in the figure, an embodiment of the present invention is an array-type seismic isolation and noise reduction device for concrete slabs of high-rise buildings, comprising an upper connecting plate 1, a lower connecting plate 2, and an array-type seismic isolation unit 3. The array-type seismic isolation unit 3 is located between the upper connecting plate 1 and the lower connecting plate 2, and the array-type seismic isolation unit 3 is arranged in a honeycomb shape. The array-type seismic isolation unit 3 comprises a lead rubber bearing 31, and 8 evenly distributed magnetorheological dampers 32 are arranged around the lead rubber bearing 31. The top surface of the lower connecting plate 2 is provided with an evenly distributed disc spring group 33, and the disc spring group 33 is provided with a polyurethane limit block 34 around it.

[0044] like Figure 3 As shown, the upper connecting plate 1 includes a high-density rubber layer 11, a porous aluminum foam layer 12 and a constrained damping layer 13. The high-density rubber layer 11 is 30 mm thick, the porous aluminum foam layer 12 is 20 mm thick, and the constrained damping layer 13 is 10 mm thick.

[0045] The top of the magnetorheological damper 32 is connected to the upper connecting plate 1, and the bottom is connected to the lower connecting plate 2. The eight magnetorheological dampers 32 are tilted at a 30° angle in all directions. The magnetorheological dampers can reduce vibrations through back-and-forth motion. The lead rubber bearing 31 has a diameter of 200 mm and a stiffness coefficient of 1.2 kN / mm.

[0046] The disc spring group 33 uses stainless steel disc springs in groups of 8, with a total stiffness of 0.8 kN / mm.

[0047] The maximum output of the magnetorheological damper 32 is 5kN, and the current adjustment range is 0-2A.

[0048] The bottom of the lower connecting plate 2 is provided with embedded anchor bolts 21 connected to the building floor, and the top surface is provided with shear key grooves 22.

[0049] The polyurethane limiting blocks 34 are symmetrically arranged around the disc spring assembly 33 , and a gap of 10 mm is formed between the polyurethane limiting blocks 34 and the disc spring assembly 33 .

[0050] Specifically, during installation, the embedded anchor bolts 21 are connected to the building floor. When in use, the vibration at the top is transmitted to the array-type seismic isolation unit through the upper connecting plate. The lead rubber bearing provides vertical load-bearing and horizontal reset functions. The disc spring group 33 provides vertical elastic support and vibration absorption. The magnetorheological damper 32 provides adjustable damping force. The polyurethane limit block 34 limits excessive displacement of the upper connecting plate. The upper connecting plate 1 is composed of multiple layers of gradient impedance material, including a high-density rubber layer 11 and a porous aluminum foam layer 12. The impedance gradient change blocks the sound wave propagation path.

[0051] A noise reduction method for a high-rise building concrete slab array type seismic isolation and noise reduction device, characterized by comprising the following steps:

[0052] Step 1, during installation, connect the embedded anchor bolts 21 to the building floor;

[0053] Step 2: Lay the array type seismic isolation unit 3 on the lower connecting plate 2:

[0054] First, the lead rubber bearing 31 is fixedly installed, and then eight magnetorheological dampers 32 are installed on the four sides of the lead rubber bearing 31; the lead rubber bearing 31 provides the main vertical stiffness and horizontal reset capability;

[0055] A shear key groove 22 is pre-opened on the lower connecting plate 2;

[0056] Step 3, assemble disc spring 33:

[0057] First, weld the concentric shaft to the lower connecting plate 2, then sleeve a set of 8 stainless steel disc springs onto the concentric shaft; repeat the installation of multiple disc springs 33;

[0058] Step 4: Install four sets of polyurethane limit blocks 34 on the circumference of each disc spring 33;

[0059] When in use, the vibration of the equipment first passes through the upper connecting plate 1, then through the 30mm high-density rubber layer 11, the 20mm porous aluminum foam layer 12 and the 10mm constrained damping layer 13, forming an impedance gradient change;

[0060] Secondly, the force is transmitted to the array-type seismic isolation unit 3 through the upper connecting plate 1. The lead rubber bearing 31 provides the main vertical stiffness and horizontal reset capability. The disc spring 33 absorbs high-frequency vibration energy, and when pressing down, it is damped by 8 magnetorheological dampers 32 with a 30° angle in all directions.

[0061] The array-type seismic isolation unit 3 realizes energy dispersion and offset of vibration.

[0062] Working principle: Equipment vibration is transmitted to the array isolation unit 3 through the upper connecting plate 1. The lead rubber bearing 31 provides the main vertical stiffness and horizontal reset capability. The disc spring 33 absorbs high-frequency vibration energy and, when pressed down, is reduced in vibration through 8 magnetorheological dampers 32 inclined at 30 degrees in all directions. The upper connecting plate 1 blocks the sound wave propagation path through the impedance gradient change of the 30mm high-density rubber layer 11, the 20mm porous aluminum foam layer 12 and the 10mm beam damping layer 13. The array isolation unit realizes the dispersion and offset of vibration and energy. The triple isolation mechanism of the lead rubber bearing 31, the disc spring group 33 and the magnetorheological damper works together, and the spatial distribution of the isolation units arranged in a honeycomb pattern significantly improves the isolation and noise reduction effect.

[0063] Example 2

[0064] like Figure 6FIG. 1 shows another embodiment of the present invention. Based on Example 1, the bottom of the magnetorheological damper 32 is hingedly connected to the lower connecting plate. A docking plate 35 is hingedly mounted at the output end of the magnetorheological damper 32. The docking plate 35 is connected to the upper connecting plate. The docking plate is used to facilitate connection with the upper connecting plate.

[0065] Example 3

[0066] like Figure 7 and 8 FIG. 1 is another embodiment of the present invention. Based on Example 1, a sliding groove 14 is provided at the bottom of the upper connecting plate. The sliding groove 14 includes a transverse portion 141 and a longitudinal portion 142, as shown in the figure. A slider 36 is installed in the transverse portion 141 and the longitudinal portion 142. A groove is provided on the side of the slider 36. A guide bar 15 is provided in the transverse portion 141 and the longitudinal portion 142. The guide bar 15 is adapted to fit in the groove.

[0067] The transverse and longitudinal parts are distributed in a cross shape along the axis, such as Figure 7 As shown. Figure 8 As shown, a partition plate is provided between the transverse portion 141 and the longitudinal portion 142, and is detachably connected to the upper connecting plate. A top hinge seat 37 is mounted on the slider 36, which is connected to the output portion of the magnetorheological damper 32. During use, the output end of the magnetorheological damper is connected to the top hinge seat. Before use, the partition plate is disassembled, and the slider is installed, slidingly connected via the guide bar and groove. The partition plate is then closed. The partition plate can be closed with bolts.

[0068] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high-rise building concrete slab array type seismic isolation and noise reduction device, characterized by: It comprises an upper connecting plate (1), a lower connecting plate (2) and an array-type seismic isolation unit (3); The array-type seismic isolation units (3) are located between the upper connecting plate (1) and the lower connecting plate (2), and the array-type seismic isolation units (3) are arranged in a honeycomb shape; The array-type seismic isolation unit (3) comprises a lead rubber support (31), and eight evenly distributed magnetorheological dampers (32) are arranged around the lead rubber support (31); The bottom of the lower connecting plate (2) is installed with embedded bolts (21), and the embedded bolts (21) are connected to the building concrete; the top surface of the lower connecting plate (2) is provided with evenly distributed disc spring groups (33), and the disc spring groups (33) are surrounded by polyurethane limit blocks (34).

2. The high-rise building concrete slab array type seismic isolation and noise reduction device according to claim 1, characterized in that: The upper connecting plate (1) comprises a high-density rubber layer (11), a porous aluminum foam layer (12) and a constrained damping layer (13); the high-density rubber layer (11) is 30 mm thick, the porous aluminum foam layer (12) is 20 mm thick, and the constrained damping layer (13) is 10 mm thick; the high-density rubber layer (11) is connected to the constrained damping layer (13) through the porous aluminum foam layer (12), and the high-density rubber layer (11) is located at the top; the porous aluminum foam layer (12) is located between the high-density rubber layer (11) and the constrained damping layer (13).

3. The high-rise building concrete slab array type seismic isolation and noise reduction device according to claim 1, characterized in that: The top of the magnetorheological damper (32) is connected to the upper connecting plate (1), and the bottom is fixedly connected to the lower connecting plate (2); The eight magnetorheological dampers (32) are distributed in four groups, and the angle between the magnetorheological dampers (32) and the lower connecting plate (2) is 30 degrees; the top surface of the lower connecting plate (2) is provided with a shear key groove (22).

4. The high-rise building concrete slab array type seismic isolation and noise reduction device according to claim 1, characterized in that: The lead rubber support (31) has a diameter of 200 mm and a stiffness coefficient of 1.2 kN / mm.

5. The high-rise building concrete slab array type seismic isolation and noise reduction device according to claim 1, characterized in that: The disc spring group (33) comprises eight stainless steel disc springs in a group and a concentric shaft, wherein the concentric shaft is fixedly connected to the lower connecting plate (2); the disc spring group (33) is sleeved on the concentric shaft, and the total stiffness is 0.8 kN / mm.

6. The high-rise building concrete slab array type seismic isolation and noise reduction device according to claim 1, characterized in that: The magnetorheological damper (32) has a maximum output of 5 kN and a current adjustment range of 0-2 A.

7. The high-rise building concrete slab array type seismic isolation and noise reduction device according to claim 1, characterized in that: The bottom of the magnetorheological damper (32) is hinged to the lower connecting plate (2), and a docking plate (35) is hingedly installed at the output end of the magnetorheological damper (32); the docking plate (35) is connected to the upper connecting plate (1).

8. The high-rise building concrete slab array type seismic isolation and noise reduction device according to claim 1, characterized in that: A sliding groove (14) is provided at the bottom of the upper connecting plate (1); the sliding groove (14) includes a transverse portion (141) and a longitudinal portion (142); a slider (36) is installed in the transverse portion (141) and the longitudinal portion (142); a groove is provided on the side of the slider (36); a guide bar (15) is provided in the transverse portion (141) and the longitudinal portion (142); the guide bar (15) is adapted to the groove; A partition plate is provided between the transverse portion (141) and the longitudinal portion (142), and the partition plate is detachably connected to the upper connecting plate (1); a top hinge seat (37) is installed on the slider (36), and the top hinge seat (37) is connected to the output portion of the magnetorheological damper (32).

9. The high-rise building concrete slab array type seismic isolation and noise reduction device according to claim 1, characterized in that: The polyurethane limiting blocks (34) are symmetrically arranged around the disc spring group (33), and a gap of 10 mm is provided between the polyurethane limiting blocks (34) and the disc spring group (33).

10. A noise reduction method for a high-rise building concrete slab array isolation and noise reduction device, characterized in that: The following steps are involved: Step 1, during installation, by connecting the embedded anchor bolts (21) to the building floor; Step 2: Lay the array type seismic isolation unit (3) on the lower connecting plate (2): First, a lead rubber bearing (31) is fixedly installed, and then eight magnetorheological dampers (32) are installed on four sides of the lead rubber bearing (31); the lead rubber bearing (31) provides the main vertical stiffness and horizontal reset capability; A shear key groove (22) is pre-arranged on the lower connecting plate (2); Step 3, assemble the disc spring (33): First, weld the concentric shaft to the lower connecting plate (2), and then sleeve a set of 8 stainless steel disc springs onto the concentric shaft; repeat the installation of multiple disc springs (33); Step 4, installing four sets of polyurethane limit blocks (34) on the circumference of each disc spring (33); When in use, the vibration of the device first passes through the upper connecting plate (1), then through the 30mm high-density rubber layer (11), the 20mm porous aluminum foam layer (12) and the 10mm constrained damping layer (13), forming an impedance gradient change; Secondly, the energy is transmitted to the array type seismic isolation unit (3) through the upper connecting plate (1), the lead core rubber support (31) provides the main vertical stiffness and horizontal reset capability, the disc spring (33) absorbs the high frequency vibration energy, and when pressed down, the vibration is reduced by 8 magnetorheological dampers (32) inclined at 30 degrees in all directions; the array type seismic isolation unit (3) realizes the energy dispersion and offset of the vibration.

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