Fabricated floor structure based on multi-stage vibration isolation and tuning vibration reduction and implementation method thereof

Abstract

The invention discloses an assembly type floor structure based on multi-stage vibration isolation and tuning vibration reduction and an implementation method thereof.The floor structure comprises a floor, a connecting joint for supporting the floor, a vibration isolation device, a rigidity device and a tuning vibration reduction device arranged in the center area of the floor, and the connecting joint is a hollow piece; the vibration isolation device comprises an outer sleeve, a vertical rod, a base plate and a vibration isolation piece, the vertical rod comprises a rod body, a supporting end supported on the floor supporting face and a vibration reduction end vertically and movably arranged in the connector, a rigidity device is arranged between the vibration reduction end and the connector, and the vibration isolation piece is arranged in the space among the base plate, the outer sleeve and the connector. Through the multi-stage vibration isolation and attenuation effect of the vibration isolation element composite elastic material, the building space vibration problem caused by vibration loads of rail traffic, road traffic, construction, power equipment and the like can be effectively reduced, meanwhile, the tuning vibration reduction device is used for controlling human-induced activity vibration on the floor, and the comfort degree of the low-frequency vibration isolation floor is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of civil engineering vibration control, and in particular to an assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction and an implementation method thereof. Background Art

[0002] With the development of industry and the process of urbanization, the impact of industrial vibrations such as traffic operation, power equipment and construction on the normal use function of buildings has become increasingly prominent, especially in hospitals, education, high-end offices, hotels and other places where the internal personnel have high requirements for comfort, which puts forward higher requirements for the quality of the vibration environment. The traditional design is to reduce the impact of vibration by adjusting the structural section (such as increasing the beam height, increasing the plate thickness) or reducing the column spacing. In practice, it has been proved that the vibration reduction effect is limited, and at the same time, it has a great impact on the use space of the building and has a low cost performance. Among the existing vibration control technologies, room floor vibration reduction is an effective and economical common control measure for vibration and noise reduction in high-quality spaces. The existing room vibration reduction floor is aimed at the vibration of people walking, jumping or power equipment on the upper part of the floor. This type of vibration energy is concentrated on a single frequency or a narrow frequency band, and the action time is short, but it is not applicable to wide-band and long-term vibrations such as rail transit. Most of the existing technical solutions for vibration-damping floors use rubber, polyurethane pads, springs and other vibration isolation methods. Due to their own material properties, rubber and polyurethane have a high natural frequency (usually 10-16 Hz). The 20-80 Hz vibration control effect caused by rail transit is difficult to meet the requirements of high-quality room vibration control. The frequency of spring vibration isolation can be made lower (3-5 Hz), but the natural frequency is too low, and it is easy to produce obvious vertical vibration when pedestrians pass through the vibration-damping floor, causing problems with user comfort. Summary of the invention

[0003] The purpose of the present invention is to provide an assembled floor structure based on multi-stage vibration isolation and tuned vibration reduction and an implementation method thereof, so as to solve the problem that the vibration reduction effect of traditional design means is limited and the comfort level does not meet the requirements due to too low frequency.

[0004] In order to achieve the above-mentioned purpose, the prefabricated floor structure based on multi-stage vibration isolation and tuning vibration reduction of the present invention includes a floor, a connecting joint, a vibration isolation device and a tuning vibration reduction device, wherein the connecting joint supports the floor, the tuning vibration reduction device is arranged in the central area of ​​the floor, the vibration isolation device is connected between the connecting joint and the floor support surface, and it also includes a stiffness device, the connecting joint is a hollow part, the vibration isolation device includes an outer sleeve, a vertical pole, a pad and a vibration isolation member, the vertical pole includes a rod body, a supporting end supported on the floor support surface and a vibration reduction end vertically movably arranged in the connecting joint, the pad is connected to the rod body, the outer sleeve is connected to the bottom of the connecting joint and is arranged around the rod body and the pad, wherein the stiffness device is arranged between the vibration reduction end and the connecting joint, and the vibration isolation member is arranged in the space between the pad, the outer sleeve and the connecting joint.

[0005] In one embodiment of the above-mentioned prefabricated floor structure based on multi-stage vibration isolation and tuned vibration reduction, the connection joint includes a joint box and a perforated vertical rod connected to the joint box, the joint box is supported at the bottom of the floor, and the perforated vertical rod vertically passes through the hole portion of the floor corresponding to the perforated vertical rod.

[0006] In one embodiment of the above-mentioned prefabricated floor structure based on multi-stage vibration isolation and tuned vibration reduction, the joint box includes a top plate, side plates and a bottom plate, the perforated vertical rods extend upward from the bottom plate to pass through and exceed the top plate, and the bottom plate has movable holes for the vertical movement of the rod body.

[0007] In one embodiment of the above-mentioned assembled floor structure based on multi-stage vibration isolation and tuned vibration reduction, the connection joint is supported at the corner of the floor.

[0008] In one embodiment of the above-mentioned assembled floor structure based on multi-stage vibration isolation and tuned vibration reduction, a plurality of corners of the floor panels are connected at different positions of one connection joint.

[0009] In one embodiment of the above-mentioned assembled floor structure based on multi-stage vibration isolation and tuned vibration reduction, the vibration reduction end, the rod body and the support end are connected in an I-shape as a whole.

[0010] In one embodiment of the above-mentioned prefabricated floor structure based on multi-stage vibration isolation and tuned vibration reduction, the stiffness device is fixed to the top of the vibration reduction end, and a vertical reserved deformation space is provided between the top of the stiffness device and the connection joint.

[0011] In one embodiment of the above-mentioned assembled floor structure based on multi-stage vibration isolation and tuned vibration reduction, a vertical reserved deformation space is provided between the outer sleeve and the top surface / floor supporting surface of the supporting end.

[0012] In one embodiment of the above-mentioned prefabricated floor structure based on multi-stage vibration isolation and tuning vibration reduction, the tuning vibration reduction device includes a box member and a plurality of tuning particles, the box member is connected to the bottom center of the floor, and the tuning particles are loaded in the box member.

[0013] In one embodiment of the above-mentioned prefabricated floor structure based on multi-stage vibration isolation and tuned vibration reduction, the vertical center lines of the connection joint, the vibration isolation device and the stiffness device coincide with each other.

[0014] The implementation method of the prefabricated floor structure based on multi-stage vibration isolation and tuning vibration reduction of the present invention is used to implement the prefabricated floor structure based on multi-stage vibration isolation and tuning vibration reduction, and comprises the following steps:

[0015] S100, obtain the technical requirements for the bearing capacity of the vibration-damping floor;

[0016] S200, calculating the stiffness and limit deformation parameters of the vibration isolation component based on the technical requirement data and the set vertical frequency;

[0017] S300, determining the size parameters of the floor, the vibration isolation device, and the connection joints based on the calculated stiffness and limit deformation parameters;

[0018] S400, install the vibration isolation device and the connection joint, set the stiffness device at the vibration reduction end, install the floor supported on the connection joint, and set the tuning vibration reduction device at the bottom center of the floor.

[0019] In one embodiment of the implementation method of the above-mentioned prefabricated floor structure based on multi-stage vibration isolation and tuned vibration reduction, a connecting joint is provided, including a joint box and a perforated vertical rod connected to the joint box, the floor is supported on the top of the joint box, and the floor is provided with holes corresponding to the perforated vertical rods, and the perforated vertical rods vertically pass through the holes of the floor.

[0020] In one embodiment of the above-mentioned method for implementing the assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction, the joint box is supported at the corner of the floor.

[0021] In one embodiment of the above-mentioned method for implementing the assembled floor structure based on multi-stage vibration isolation and tuned vibration reduction, four floors are connected to a joint box in a cross shape, wherein each floor is fixed in position by at least one perforated vertical rod.

[0022] In one embodiment of the above-mentioned implementation method of the prefabricated floor structure based on multi-stage vibration isolation and tuned vibration reduction, a vertical reserved deformation space is provided between the top of the stiffness device and the connecting joint; a vertical reserved deformation space is provided between the outer sleeve and the top surface of the supporting end or the floor supporting surface.

[0023] In one embodiment of the above-mentioned method for implementing the assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction, the tuning vibration reduction device includes a box member and a plurality of tuning particles, the box member is connected to the bottom of the floor, and the tuning particles are loaded in the box member.

[0024] The beneficial effect of the present invention is that the present invention utilizes low-frequency vibration isolation elements and elastic materials to avoid the main vibration frequency of the vibration source, and through the multi-stage vibration isolation and vibration attenuation effect of the vibration isolation elements and composite elastic materials, it can effectively reduce the vibration problems in the building space caused by vibration loads such as rail transit, road traffic, construction, and power equipment.

[0025] The present invention avoids pedestrian comfort problems that may be caused by low-frequency systems by setting up a tuning vibration reduction device. The prefabricated installation of the present invention realizes industrialized production and standardized installation of high-performance elevated vibration reduction floors through the overall assembly of modular floors and detachable support systems. It has reliable technology, reasonable structure, simple installation, easy implementation, and high engineering application value.

[0026] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional schematic diagram of an embodiment of the assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction of the present invention;

[0028] Figure 2 A top view of an embodiment of the assembled floor structure based on multi-stage vibration isolation and tuned vibration reduction of the present invention;

[0029] Figure 3 It is a cross-sectional schematic diagram of the assembly structure of the connection joint, the vibration isolation device and the stiffness device of the assembled floor structure based on multi-stage vibration isolation and tuned vibration reduction of the present invention;

[0030] Figure 4 It is a cross-sectional schematic diagram of the floor of the assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction and the assembly structure of the tuning vibration reduction device of the present invention.

[0031] Among them, the reference numerals

[0032] 100: Floor

[0033] 200: Connector

[0034] 210: Connector box

[0035] 211: Top plate

[0036] 212: Side panels

[0037] 213: Base plate

[0038] 220: Perforated pole

[0039] 300: Vibration isolation device

[0040] 310: Outer sleeve

[0041] 320: Pole

[0042] 321: Rod body

[0043] 322: Support end

[0044] 323: Vibration reduction end

[0045] 330: Pad

[0046] 340: Vibration isolation parts

[0047] 400: Stiffness device

[0048] 500: Tuned vibration damping device

[0049] 510: Box parts

[0050] 520: Tuning particles

[0051] S: Floor support surface DETAILED DESCRIPTION

[0052] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the claims attached to the present invention.

[0053] References in the specification to "one embodiment", "an embodiment", "an example embodiment", etc., mean that the embodiment being described may include certain features, structures, or characteristics, but not every embodiment must include these certain features, structures, or characteristics. In addition, such statements do not refer to the same embodiment. Further, when a certain feature, structure, or characteristic is described in conjunction with an embodiment, it is indicated that it is within the knowledge of those skilled in the art to combine such feature, structure, or characteristic into other embodiments, whether or not it is explicitly described.

[0054] Certain words are used in the specification and subsequent claims to refer to specific components or parts. It should be understood by those skilled in the art that technical users or manufacturers may refer to the same component or part by different nouns or terms. This specification and subsequent claims do not use differences in names as a way to distinguish components or parts, but use differences in functions of components or parts as the criteria for distinction. "Including" and "comprising" mentioned throughout the specification and subsequent claims are open-ended terms and should be interpreted as "including but not limited to".

[0055] like Figures 1 to 3 As shown, the assembled floor structure based on multi-stage vibration isolation and tuned vibration reduction of the present invention includes a floor 100, a connection joint 200, a vibration isolation device 300 and a stiffness device 400. The connection joint 200 is supported and connected to the floor 100, and the vibration isolation device 300 is connected between the connection joint 200 and the floor support surface S. Among them, the connection joint 200 is a hollow part, the vibration isolation device 300 includes an outer sleeve 310, a vertical rod 320, a pad 330 and a vibration isolation member 340, and the vertical rod 320 includes a rod body 321, a support end 322 and a vibration reduction end 323. The support end 322 and the vibration reduction end 323 are respectively connected to the two ends of the rod body 321, for example, the vibration reduction end 232, the rod body 321 and the support end 322 are connected as a whole in an I-shaped shape. The rod body 321, the support end 322 and the vibration reduction end 323 can be integrally formed or connected. The support end 322 is supported on the floor support surface S, and the vibration reduction end 323 is vertically movably arranged in the hollow connection joint 200. The pad 330 is connected to the rod body 321, and the outer sleeve 310 is connected to the bottom of the connection joint 200 and is arranged around the rod body 321 and the pad 330.

[0056] A stiffness device 400 is provided between the vibration reduction end 323 of the vertical rod 320 located in the hollow connection joint 200 and the connection joint 200. A vibration isolator 340 is provided in the space between the pad 330 of the vibration isolation device 300, the outer sleeve 310 and the connection joint 200.

[0057] The natural frequency of the vibration isolation device 300 of the present invention is not greater than 5 Hz. After the stiffness device 400 takes effect, the design value of the natural frequency of the vibration-damping floor is not greater than 12 Hz. When the load on the floor 100 is small, the stiffness device 400 does not work, and only the vibration isolation device 300 provides stiffness. At this time, the frequency is the frequency of the vibration isolation device 300, which effectively attenuates vibrations above 8 Hz. When the load on the floor 100 is large, the compression deformation of the vibration isolation device 300 increases, and the stiffness device 400 starts to work. At this time, the frequency is the frequency corresponding to the total stiffness of the vibration isolation device 300 and the stiffness device 400, which effectively isolates vibrations above 17 Hz. The device meets the requirements of a multi-stage vibration isolation system under different load conditions through the combined use of the vibration isolation device 300 and the stiffness device 400, which can effectively reduce vibrations transmitted from the outside while avoiding excessive deformation of the system that affects use.

[0058] The vibration isolator 340 is, for example, a low-frequency vibration isolator and elastic material that avoids the main vibration frequency of the vibration source. The low-frequency vibration isolator and elastic material can be, for example, a rubber damper, a metal spring, an air spring, a polyurethane elastomer, a polyacrylate elastomer, a metal rubber part, etc.

[0059] In some embodiments of the prefabricated floor structure based on multi-stage vibration isolation and tuned vibration reduction of the present invention, the connection joint 200 includes a joint box 210 and a perforated vertical rod 220, and the perforated vertical rod 220 is connected to the joint box 210, wherein the joint box 210 is used to support the floor 100, and the perforated vertical rod 220 can further limit the floor 100. In detail, the joint box 210 is a hollow member supported at the bottom of the floor 100, the perforated vertical rod 220 extends vertically, the floor 100 has a hole portion corresponding to the perforated vertical rod 220, and the perforated vertical rod 220 passes through the corresponding hole portion of the floor 100 supported on the joint box 210 to prevent the floor 100 from moving on the surface of the joint box 210.

[0060] In some embodiments of the prefabricated floor structure based on multi-stage vibration isolation and tuning vibration reduction of the present invention, the joint box 210 includes a top plate 211, a side plate 212 and a bottom plate 213, and the top plate 211, the side plate 212 and the bottom plate 213 are constructed to form a hollow shape. The perforated vertical rod 220 extends upward from the bottom plate 213 to pass through and exceed the top plate 211, and the bottom plate 213 has a movable hole for the rod body 321 of the vertical rod 320 to move vertically.

[0061] like Figure 1 and Figure 3 As shown, the rigidity device 400 is fixed to the top of the vibration reduction end 323 of the vertical pole 320, and there is a vertical reserved deformation space between the top of the rigidity device 400 and the connection joint 200, that is, there is a vertical reserved deformation space between the top of the rigidity device 400 and the bottom surface of the top plate 211 of the connection joint 200. In addition, there is a vertical reserved deformation space between the outer sleeve 310 of the vibration isolation device 300 and the top surface of the support end 322 of the vertical pole 320, or there is a vertical reserved deformation space between the outer sleeve 310 of the vibration isolation device 300 and the floor support surface, depending on the size relationship between the outer sleeve 310 and the support end 322.

[0062] In the present invention, the vertical center lines of the connection joint 200, the vibration isolation device 300, and the stiffness device 400 coincide with each other, thereby ensuring the vibration reduction and isolation effect.

[0063] In some embodiments of the prefabricated floor structure based on multi-stage vibration isolation and tuned vibration reduction of the present invention, the connection joint 200 is supported at the corner of the floor 100. Of course, the connection joint 200 together with the vibration isolation device 300 and the stiffness device 400 can also be arranged at other positions of the floor 100, and vibration reduction and vibration isolation can all be achieved.

[0064] The corners of multiple floors 100 are connected at different positions of a connection joint 200 to achieve prefabricated production, solving many problems of existing concrete vibration-damping floors, such as large weight increases the structural design load, long on-site concrete construction period, difficulty in installing and constructing vibration-damping elements after large-area cast-in-place concrete slabs are installed, and special lifting equipment is required for later maintenance and replacement, which is difficult to construct. Figure 2 In the embodiment shown, a connection joint 200 is placed at the corners of four cross-shaped floor panels 100, and supports and fixes the four floor panels 100, and performs vibration reduction and vibration isolation for the four floor panels 100. Each corner of the floor panel 100 may correspond to at least one perforated vertical rod 220.

[0065] The floor 100 of the present invention is prefabricated, high in efficiency, low in cost, and convenient for transportation and assembly. The floor 100 is designed and manufactured in a modular manner, can be assembled and flexibly changed, is simple and fast, and greatly shortens the construction period.

[0066] It should be noted that Figure 2 This is only one embodiment of the prefabricated floor structure based on multi-stage vibration isolation and tuned vibration reduction of the present invention, which can also be implemented in the form of staggered installation, large and small splicing installation, etc. Correspondingly, the connection joint 200 can also be supported at different positions of the floor 100, such as the edge or the inside.

[0067] The assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction of the present invention also includes a tuning vibration reduction device 500, which includes a box member 510 and a plurality of tuning particles 520. The box member 510 is connected to the bottom center of the floor 100, and the tuning particles 520 are loaded in the box member 510. One or more tuning vibration reduction devices 500 can be set for one floor 100. In this embodiment, the tuning particles 520 are fixed to the central bottom of the floor 100. The tuning particles 520 are designed by particle size and weight, and the total volume of the tuning particles 520 does not exceed 70% of the internal volume of the box member 510. The tuning vibration reduction device 500 can ensure that the low-frequency vibration reduction floor does not vibrate significantly when people pass by, and meets the comfort use requirements.

[0068] Aiming at controlling the influence of vibrations from rail transit, road traffic, power equipment, construction, etc. on the normal use functions of high-quality building spaces, especially the precise and high-standard vibration control of specialized spaces with special functions, the present invention proposes an assembled vibration-damping floor based on multi-stage vibration isolation and tuned vibration reduction. The vibration reduction effect is efficient, the technology is reliable, the structure is reasonable, the installation is convenient, and the maintenance is easy, which has the value of engineering application promotion.

[0069] The present invention further proposes an implementation method of the above-mentioned assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction, comprising the following steps:

[0070] S100, obtaining technical requirements of the floor 100. The technical requirements include the long-term load G on the floor 100 (including the deadweight of the floor 100) and the maximum load F that may occur during use. max .

[0071] S200 , according to the technical requirements of the floor 100 and based on the set vertical frequency, the stiffness and limit deformation of the vibration isolator 340 are calculated.

[0072] The vertical stiffness parameter of the stiffness device 400 is set to 5 times the stiffness of the vibration isolator 340 .

[0073] For example, the vertical frequency is set to be no greater than 5 Hz, according to K=G / 9.8*(2πf) 2 Calculate the stiffness of the vibration isolator 340 and calculate the stiffness according to Δ=F max / K, calculate the limit deformation of the vibration isolator 340;

[0074] S300, according to the stiffness and limit deformation parameters of the vibration isolator 340, and in accordance with the deformation space and installation size requirements of the vibration isolator 340, the size parameters of the floor 100, the connection joint 200 and the vibration isolation device 300 are determined.

[0075] S400 , install the connection joint 200 and the vibration isolation device 300 , set the stiffness device 400 at the vibration reduction end 323 of the vertical pole 320 , install the floor 100 supported on the connection joint 200 , and set the tuning vibration reduction device 500 at the center of the floor 100 .

[0076] In the step S400, the connection joint 200 is provided to include a joint box 210 and a perforated vertical rod 220 connected to the joint box 210, the floor 100 is supported on the top of the joint box 210, and the floor 100 is provided with a hole portion corresponding to the perforated vertical rod 220, and the perforated vertical rod 220 vertically passes through the hole portion of the floor 100 to limit and fix the floor 100.

[0077] In step S400 , the joint box 210 of the connection joint 200 is supported at a corner of the floor 100 .

[0078] Furthermore, four floorboards 100 are connected in a cross shape to a joint box 210 of a connection joint 100 , wherein each floorboard 100 is limited and fixed by at least one perforated vertical rod 220 .

[0079] In step S400, a vertical reserved deformation space is provided between the top of the rigidity device 400 and the connection joint 200. A vertical reserved deformation space is provided between the outer sleeve 210 and the floor support surface S or the top surface of the support end 322 of the vertical rod 320.

[0080] In step S300, in one embodiment of the present invention, the thickness of the floor 100 is not greater than 30 mm, the plane size of the connection joint 200 is determined to be not greater than 80 mm x 80 mm, the height of the joint box 210 of the connection joint 200 is 50 mm, the thickness of the plate constituting the joint box 210 is 15 mm, and the diameter of the perforated vertical rod 220 connected to the joint box 210 is 8 mm. A hole is opened at the corner of the floor 100, and the diameter of the hole is set to be 1 mm larger than the diameter of the perforated vertical rod 220.

[0081] Assemble the connecting joint 200, the vibration isolation device 300, and the stiffness device 400, wherein the stiffness device 400 can adopt two sets of overlapping butterfly springs, the distance between the top surface of the stiffness device 400 and the bottom of the top plate 211 of the joint box 210 is 5 mm, and the distance between the bottom of the outer sleeve 310 of the vibration isolation device 300 and the upper surface of the bottom lower flange of the I-shaped vertical rod 320 is 15 mm, that is, the two vertical reserved deformation spaces are set to 5 mm and 15 mm respectively.

[0082] The connection joints 200, the vibration isolation devices 400 and the stiffness devices 500 are arranged at intervals of 600 mm to form a support system. Then, the corner openings of different floors 100 are respectively passed through the perforated vertical rods 320. Under the load of the floor 100, the depth of the perforated vertical rods 220 penetrating into the corner holes of the floor 100 is about 23 mm, which is lower than the thickness of the floor 100. After applying a long-term load, the top of the perforated vertical rods 220 is flush with the top surface of the floor 100.

[0083] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. An assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction, comprising a floor, a connection joint, a vibration isolation device and a tuning vibration reduction device, wherein the connection joint supports the floor, the tuning vibration reduction device is arranged in the central area of ​​the floor, and the vibration isolation device is connected between the connection joint and the floor support surface, characterized in that: It also includes a stiffness device, the connecting joint is a hollow part, the vibration isolation device includes an outer sleeve, a vertical pole, a pad and a vibration isolation member, the vertical pole includes a rod body, a supporting end supported on the floor supporting surface and a vibration reduction end vertically movably arranged in the connecting joint, the pad is connected to the rod body, the outer sleeve is connected to the bottom of the connecting joint and is arranged around the rod body and the pad, wherein the stiffness device is arranged between the vibration reduction end and the connecting joint, and the vibration isolation member is arranged in the space between the pad, the outer sleeve and the connecting joint.

2. The assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction according to claim 1 is characterized in that: The connection joint comprises a joint box and a perforated vertical rod connected to the joint box, the joint box is supported at the bottom of the floor, and the perforated vertical rod vertically passes through a hole portion of the floor corresponding to the perforated vertical rod.

3. The assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction according to claim 2 is characterized in that: The joint box body comprises a top plate, side plates and a bottom plate, the perforated vertical rod extends upward from the bottom plate to pass through and exceed the top plate, and the bottom plate has a movable hole for the rod body to move vertically.

4. The assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction according to claim 1 is characterized in that: The connection joints are supported at corners of the floor panels.

5. The assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction according to claim 1 is characterized in that: Corners of a plurality of the floor panels are connected at different positions of one connecting joint.

6. The assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction according to claim 1 is characterized in that: The vibration-damping end, the rod body and the supporting end are connected in an I-shape as a whole.

7. The assembled floor structure based on multi-stage vibration isolation and tuned vibration reduction according to any one of claims 1 to 6, characterized in that: The stiffness device is fixed to the top of the vibration-damping end, and a vertical reserved deformation space is provided between the top of the stiffness device and the connecting joint.

8. The assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction according to any one of claims 1 to 6, characterized in that: A vertical reserved deformation space is provided between the outer sleeve and the top surface / floor supporting surface of the supporting end.

9. The assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction according to any one of claims 1 to 6, characterized in that: The tuning and vibration reduction device comprises a box member and a plurality of tuning particles. The box member is connected to the bottom center of the floor, and the tuning particles are loaded in the box member.

10. The assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction according to any one of claims 1 to 6, characterized in that: The vertical center lines of the connecting joint, the vibration isolation device and the stiffness device coincide with each other.

11. An implementation method of an assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction, characterized in that: The method for implementing the assembled floor structure based on multi-stage vibration isolation and tuned vibration reduction according to any one of claims 1 to 10 comprises the following steps: S100, obtain the technical requirements for the bearing capacity of the vibration-damping floor; S200, calculating the stiffness and limit deformation parameters of the vibration isolation component based on the technical requirement data and the set vertical frequency; S300, determining the size parameters of the floor, the vibration isolation device, and the connection joints based on the calculated stiffness and limit deformation parameters; S400, install the vibration isolation device and the connection joint, set the stiffness device at the vibration reduction end, install the floor supported on the connection joint, and set the tuning vibration reduction device in the center of the floor.

12. The implementation method of the assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction according to claim 11, characterized in that: The connection joint comprises a joint box and a perforated vertical rod connected to the joint box. The floor is supported on the top of the joint box. The floor is provided with holes corresponding to the perforated vertical rods. The perforated vertical rods vertically pass through the holes of the floor.

13. The implementation method of the assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction according to claim 12, characterized in that: The joint box is supported at the corner of the floor.

14. The implementation method of the assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction according to claim 13, characterized in that: Four floorboards are connected to a joint box in a cross shape, wherein each floorboard is fixed in position by at least one perforated vertical rod.

15. The implementation method of the assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction according to claim 11, characterized in that: A vertical reserved deformation space is provided between the top of the rigidity device and the connecting joint; a vertical reserved deformation space is provided between the outer sleeve and the top surface of the supporting end or the floor supporting surface.

16. The implementation method of the assembled floor structure based on multi-stage vibration isolation and tuning vibration reduction according to claim 11, characterized in that: The tuning vibration reduction device comprises a box body and a plurality of tuning particles. The box body is connected to the bottom of the floor, and the tuning particles are loaded in the box body.

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