Vibration reduction and sound insulation structure for floating ground

Abstract

A floating ground vibration reduction and sound insulation structure comprises a floating ground, the floating ground comprises a structural floor and a leveling layer, and the floating ground vibration reduction and sound insulation structure is characterized in that a first vibration reduction and sound insulation layer, a second vibration reduction and sound insulation layer, an isolation layer and a reinforced concrete plate are sequentially arranged on the leveling layer from bottom to top; the first vibration reduction and sound insulation layer comprises vibration reduction and sound insulation blocks arranged in a matrix shape and suction cotton arranged between the vibration reduction and sound insulation blocks in a filling mode. The second vibration reduction and sound insulation layer comprises a base plate and a supporting type vibration reduction pad arranged on the base plate. The two sound insulation layers complement each other, cooperate with each other and act together, the building sound insulation problem is solved, the influence of impact sound generated in the upper space on the lower room is reduced or eradicated, the whole floating floor has the good vibration reduction and sound insulation effects, and the use comfort is improved.

Description

Technical Field

[0001] The present application relates to the field of building construction, and specifically to a floating ground vibration reduction and sound insulation structure. Background Art

[0002] Floor sound insulation includes insulation against both impact sound and airborne sound. The majority of noise transmitted through floor slabs is impact sound. Impact sound transmitted through buildings primarily results from vibrations generated by people or objects colliding with the building. This vibration wave propagates along the structure and radiates into the surrounding air. In venues with high acoustic requirements, such as rehearsal rooms, concert halls, and performance venues, noise reduction is necessary to minimize the impact on performance. When dormitories or offices are located below performance or sports venues, sound insulation measures are necessary to prevent or minimize noise transmission from above.

[0003] Generally speaking, meeting airborne sound insulation standards for floor slabs is not difficult, as commonly used reinforced concrete materials offer excellent airborne sound insulation. Measurements show that 120mm thick reinforced concrete has an airborne sound insulation rating of 48-50dB. This improvement is even greater with additional structural measures. However, 120mm thick reinforced concrete is insufficient for isolating impact sound. Measurements show that the impact sound pressure level is above 80dB, far below the required level. Therefore, in some projects, floor slabs using sound insulation pads, mineral wool, or glass wool as underlayments can achieve an improvement of 15-30dB in impact sound.

[0004] GB50118-2010 "Code for Sound Insulation Design of Civil Buildings" stipulates impact sound insulation standards (weighted normalized impact sound level Ln,w): For residential buildings, the floor slabs between bedrooms and living rooms (halls) are: <75dB; for high-quality residential buildings, <65dB; for school buildings, the floor slabs between ordinary classrooms are: <75dB; the floor slabs between language classrooms, reading rooms and upper-floor rooms are: <65dB; the floor slabs between ordinary classrooms, laboratories, computer rooms and upper-floor noise-generating rooms are: <65dB; the floor slabs between piano rooms and music classrooms are: <65dB; for hospital buildings, the floor slabs between wards, operating rooms and upper-floor rooms are: <65dB; for hotel buildings, the floor slabs between guest rooms and upper-floor rooms are: Special Grade: <55dB; Grade 1: <65dB; Grade 2: <75dB. Specific standards must be determined based on the actual project's room usage requirements.

[0005] As buildings become increasingly versatile, their acoustical requirements are rising. To address the diverse functions of different areas, there's a growing need to prevent the sound from interfering between rooms on upper and lower levels. This is primarily addressed by installing floating floors. Floating floors are separated from the original structural floor and utilize special flexible connections underneath to achieve vibration and sound insulation. They are primarily used in rooms that require isolation from solid-borne sound and mitigate the effects of impact noise.

[0006] An existing floating ground vibration damping and sound insulation structure includes a structural floor, which is characterized by: including a sound insulation layer arranged on the structural floor, the sound insulation layer includes a leveling layer and an elastic pad, the leveling layer is laid above the structural floor, and the elastic pad is laid above the leveling layer.

[0007] Regarding the above-mentioned related technologies, the inventors believe that there are the following deficiencies: the material and acoustic performance of the sound insulation layer of this method are relatively simple, the sound insulation effect is good only in a certain frequency band, and the sound insulation effect of heavy impact is poor.

[0008] The entire construction process of a floating floor is complex, requiring stringent requirements for structural floor flatness, high material performance, and high quality throughout each process. The construction of a floating floor must also consider building height requirements and the floor's elasticity and deformation requirements for the occupied space. Floating floor construction also requires comprehensive consideration of mechanical and electrical piping requirements, installation and finishing structures, and process requirements. Floating floor projects that meet these high and comprehensive requirements are rare. Utility Model Content

[0009] The purpose of the utility model is to provide a floating floor vibration reduction and sound insulation structure, which solves the problem of building sound insulation by arranging a floating floor above the structural floor, reduces or eliminates the impact of the impact sound generated in the upper space on the lower room, and improves the user comfort.

[0010] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0011] A floating floor vibration-damping and sound-insulating structure comprises a floating floor, wherein the floating floor comprises a structural floor slab and a leveling layer, and is characterized in that a first vibration-damping and sound-insulating layer, a second vibration-damping and sound-insulating layer, an isolation layer, and a reinforced concrete slab are sequentially arranged on the leveling layer from bottom to top; the first vibration-damping and sound-insulating layer comprises vibration-damping and sound-insulating blocks arranged in a matrix and attracting cotton filled between the vibration-damping and sound-insulating blocks; and the second vibration-damping and sound-insulating layer comprises a pad and a supporting vibration-damping pad arranged on the pad.

[0012] Further preferably, an isolation pad is provided between the sound insulation structure and the vertical structure, and the isolation pad is laid along the bottom edge of the vertical structure.

[0013] Furthermore, the vibration-damping and sound-insulating blocks are polyurethane vibration-damping blocks, cork rubber vibration-damping blocks or other polymer vibration-damping blocks, with a single block size of 50×50×50mm or 70×70×70mm and a spacing of 300~600mm.

[0014] Furthermore, the attraction cotton is centrifugal glass wool, and the top surface is at the same height as the vibration-damping and sound-insulating block.

[0015] Furthermore, the backing board is a flame retardant solid wood board, a multi-layer board or a core board.

[0016] Furthermore, the backing plate is a 2-3 mm thick steel plate.

[0017] Furthermore, the supporting vibration damping pad is made of rubber or polyurethane, and the rubber vibration damping pad is preferably composed of elastic particles.

[0018] In addition, the isolation layer is a PE film, and the films are overlapped and connected with waterproof tapes.

[0019] More preferably, the thickness of the reinforced concrete slab is 70 mm to 100 mm.

[0020] Compared with the prior art, the present invention has the following characteristics and beneficial effects:

[0021] The two sound insulation layers of the present application complement, cooperate with and work together to solve the problem of building sound insulation, reduce or eliminate the impact of the impact sound generated in the upper space on the lower room, so that the floating floor as a whole has a better vibration reduction and sound insulation effect, and improves the comfort of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of a floating floor vibration reduction and sound insulation structure for this application;

[0023] Figure 2 This is a diagram illustrating the installation of the vibration-damping and sound-insulating blocks involved in this application;

[0024] Figure 3 This is a schematic structural diagram of the second vibration-damping and sound-insulating layer involved in this application. DETAILED DESCRIPTION

[0025] In order to make the technical means, innovative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below.

[0026] The embodiments described herein are specific embodiments of the present invention and are used to illustrate the concept of the present invention. They are illustrative and exemplary and should not be construed as limiting the embodiments and scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the claims and the disclosure of the specification, including technical solutions that adopt any obvious substitutions and modifications to the embodiments described herein.

[0027] A floating ground vibration reduction and sound insulation structure, such as Figures 1-3As shown, it includes a structural floor 1 and a leveling layer 2. On the leveling layer 2, a first vibration-damping and sound-insulating layer 3, a second vibration-damping and sound-insulating layer 4, an isolation layer 5, and a reinforced concrete slab 6 are sequentially arranged from bottom to top. The first vibration-damping and sound-insulating layer 3 includes vibration-damping and sound-insulating blocks 31 arranged in a matrix and suction cotton 32 filled between the vibration-damping and sound-insulating blocks 31. The second vibration-damping and sound-insulating layer 4 includes a pad 41 and a supporting vibration-damping pad 42 provided on the pad 41.

[0028] An isolation pad 7 is also provided between the sound insulation structure and the vertical structure 8. The isolation pad 7 is laid along the bottom edge of the vertical structure. The vibration-damping sound insulation block 31 adopts a polyurethane vibration-damping block, a cork rubber vibration-damping block or other polymer vibration-damping blocks. The size of a single block is 50×50×50mm or 70×70×70mm, and the spacing is 300~600mm. The suction cotton 32 is centrifugal glass wool, and the top surface is at the same height as the vibration-damping sound insulation block 31. The pad 41 is a flame-retardant solid wood board, a multi-layer board or a core board, and the pad 41 is a 2~3mm thick steel plate.

[0029] The material of the supporting vibration damping pad 42 is rubber or polyurethane. The rubber vibration damping is preferably composed of elastic particles. The isolation layer 5 is a PE film. The films are overlapped and connected with waterproof strips. The thickness of the reinforced concrete slab 6 is 70mm~100mm.

[0030] A floating floor vibration-damping and sound-insulating structure comprises a floating floor, wherein the floating floor comprises a structural floor, a leveling layer arranged above the structural floor, and a first vibration-damping and sound-insulating layer above the leveling layer, wherein the first vibration-damping and sound-insulating layer comprises point-supported vibration-damping blocks and sound-absorbing cotton filling the cavities between the vibration-damping and sound-insulating blocks.

[0031] The structure also includes a second vibration-damping and sound-insulating layer located above the first vibration-damping and sound-insulating layer. The second vibration-damping and sound-insulating layer includes a base plate located above the first vibration-damping and sound-insulating layer, and a supporting vibration-damping pad located above the base plate. The structure also includes an isolation layer located above the second sound-insulating layer and a reinforced concrete slab located above the isolation layer. The structure also includes a vertical structure and an isolation pad.

[0032] By adopting the above technical solution, a better sound insulation and vibration reduction effect can be achieved on the structural floor.

[0033] Optionally, the leveling layer may be a mortar leveling layer, and when the flatness of the structural floor is good, the leveling layer may not be provided.

[0034] Preferably, the leveling layer can be made of 3-8 mm thick cement-based self-leveling material.

[0035] By adopting the above technical solution, the problem of poor flatness of the structural floor can be solved, a flat and solid base surface can be provided for the first vibration-damping and sound-insulating layer, the paving efficiency and quality of the first vibration-damping and sound-insulating layer can be improved, the force on the individual vibration-damping blocks and the whole can be evenly distributed, and the sound-absorbing cotton filling can be made denser, thereby producing a better sound insulation and vibration reduction effect.

[0036] Optionally, vibration damping blocks can be made of polyurethane, cork rubber, or other polymer materials. Calculations are performed based on the upper load, and the individual block size and spacing are determined based on the calculation results. The individual block size is 50×50×50mm or 70×70×70mm. When building height is limited, the height of the block can be appropriately reduced. However, the bearing capacity of the block must be calculated, and its vibration and sound insulation performance must be tested and tested. The spacing between the blocks is generally 300-600mm, determined based on bearing capacity calculations and testing.

[0037] By adopting this technical solution, the nonlinear elastic properties of the vibration damping blocks can be exploited to absorb and disperse energy through deformation and recovery when subjected to impact or vibration. This material has a high internal resistance and can generate significant damping, effectively cutting off the propagation path of the sound bridge and reducing the efficiency of sound transmission through solids, thereby effectively reducing vibration transmission and noise. The design and manufacturing process of the vibration damping bricks, through scientific and rational mixing and pressing, can ensure that the material has excellent vibration damping and sound insulation properties.

[0038] Preferably, the sound-absorbing cotton is made of centrifugal glass wool, the thickness of which is the same as that of the vibration-damping block, and the density index of the sound-absorbing cotton should also be clearly defined.

[0039] By adopting the above technical solution, glass wool achieves excellent sound absorption for mid- and high-frequency sounds. Factors that primarily influence its sound absorption performance within a floating layer are thickness and density. As thickness increases, the mid- and low-frequency sound absorption coefficients significantly increase, while high-frequency sound absorption coefficients show little change. With constant thickness and increased bulk density, the mid- and low-frequency sound absorption coefficients also increase. However, when the bulk density reaches a certain level, the material becomes denser, and the sound absorption coefficient actually decreases.

[0040] Optionally, the pad mainly plays the role of transferring the load, uniformly transferring the load on the upper first vibration-damping and sound-insulating layer downward to the first vibration-damping and sound-insulating layer, and can be made of flame-retardant solid wood boards, multi-layer boards, large core boards, etc.

[0041] Preferably, the base plate can also be made of steel plate or other plate with sound insulation function. When the building floor height is insufficient, a 2-3 mm thick steel plate can be used.

[0042] By adopting the above technical solution, the pad can provide a complete supporting surface for the first vibration-damping and sound-insulating layer on the upper part. When a steel plate or a plate with sound-insulating function is used, it can provide a supporting surface and play a certain sound-insulating role at the same time.

[0043] Optionally, the vibration damping pads can be made of materials such as rubber and polyurethane. They must meet the following requirements: they must be able to bear the full load on the upper portion, deflect under low load conditions, have a low natural frequency, be easy to install, and exhibit good elasticity, water resistance, durability, and antibacterial properties. Rubber vibration damping pads should preferably be composed of elastic particles that do not lose their elasticity when compressed and do not significantly degrade over time.

[0044] Preferably, the vibration-damping pad is fully spread on the pad, and protrusions are preferably provided intermittently on the bottom. The vibration-damping pad is subjected to point-like force, so that the frequency forms a sudden change during the vibration transmission process, which better reduces energy and provides a better vibration reduction effect.

[0045] By adopting this technical solution, rubber and polyurethane vibration damping pads achieve excellent vibration damping, making them a highly cost-effective floating flooring material. Installation is simple, requiring only paving and gap preparation. The second vibration damping and sound insulation layer complements the first layer in addressing impact sounds of different frequency bands. Due to the different damping and elastic properties of the materials, the vibration damping effect and degree of improvement for heavy and light impacts differ. The two layers work together to achieve superior vibration damping and sound insulation for the floating floor as a whole.

[0046] Optionally, a PE film is used as an isolation layer, and the films are overlapped and connected with waterproof tapes.

[0047] By adopting this technical solution, the isolation layer can provide insulation and moisture resistance, and prevent the protective layer from damaging the finished product below during construction. Even if the vibration damping pad is moisture-proof and damage-resistant, it is still recommended to install this isolation layer to ensure the overall vibration and sound insulation effect and construction quality.

[0048] Optionally, the thickness of the reinforced concrete slab should not be less than 70mm, preferably 100mm, with double-layer bidirectional steel bars installed inside, and pads required at the bottom of the steel bars. The concrete pouring process should be symmetrical and uniform to ensure the thickness of the upper protective layer, and strictly control the elevation and surface flatness.

[0049] By adopting the above technical solution, the reinforced concrete floor slab bears the upper load and evenly transmits the load to the lower vibration-damping isolation layer, and can provide weight load to the lower vibration-damping and sound-insulating layer, so that the vibration-damping material can obtain sufficient deflection and achieve better vibration-damping and sound-insulating effects.

[0050] Optionally, an isolation pad is required to perform flexible isolation between the floating ground and the vertical structure.

[0051] By adopting the above technical solution, the floating ground is flexibly isolated from the surrounding vertical structures such as structural walls, secondary partition walls, and railing construction measures to prevent vibrations from being transferred to the lower layer through the vertical structures, so that all vibrations are transmitted to the lower layer through the floating ground.

[0052] A construction method for a floating ground vibration reduction and sound insulation structure, the construction steps are as follows:

[0053] Step 1: Construction technical preparation: including but not limited to plan preparation and approval, briefing, on-site measurement and layout, material acceptance and retesting, etc.

[0054] Step 2: Clean the site and construct the leveling layer to ensure the surface flatness requirement of 3mm / 2m;

[0055] Step 3: Install the outer isolation pad at the bottom of the vertical structure, glue it to the vertical structure, and use special tape to connect the joints between the vibration isolation pads.

[0056] Step 4: Measure and lay out the lines, mark the location of the vibration damping blocks, and follow the Figure 3 Install the vibration damping blocks on the leveling layer and fix them with glue to ensure the overall flatness;

[0057] Step 5: Fill the cavity between the vibration damping wheel and the vibration damping brick with sound-absorbing cotton of the same thickness as the height of the vibration damping block;

[0058] Step 6: Lay the pads flat on the first vibration-damping and sound-insulating layer. Considering the expansion and contraction deformation and temperature deformation, there should be a proper gap between the pads, but it should not be too large. According to the selected pad material, if conditions permit, they should be reliably connected to form a whole.

[0059] Step seven, lay the vibration damping pad on the base plate; after flattening it appropriately, stick special tape on the seams between the widths to connect them.

[0060] Step 8: Lay the isolation layer on the vibration damping pad with staggered seams. The overlap between the isolation layers should be no less than 100mm. If the length is too long, the overlap width should be increased and the layers should be tightly bonded with waterproof tape.

[0061] Step nine: Set up concrete or mortar pads on the isolation layer, place the lower layer of steel bars on it, tie the steel bars firmly, pour ordinary or lightweight concrete, vibrate and maintain appropriately to form a reinforced concrete slab.

[0062] During the acceptance inspection of materials in step 1, the size, specification, model, manufacturer, date and other information of vibration damping blocks, vibration damping pads, sound-absorbing cotton and pads should be checked. The inspection report and certificate of quality of vibration damping blocks, vibration damping pads, sound-absorbing cotton and other materials should be checked. If sound-absorbing cotton and steel bars need to be retested on site according to the design and specification requirements, they should be retested. They can only be put into use in the project after the retest results are qualified. When concrete is delivered to the site, test blocks should be retained and slump tests should be carried out, and the relevant standards should be followed.

[0063] The parts not involved in the present invention are the same as the existing technology or can be implemented by using the existing technology.

[0064] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0065] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A floating floor vibration reduction and sound insulation structure, comprising a floating floor, wherein the floating floor comprises a structural floor (1) and a leveling layer (2), and is characterized in that: A first vibration-damping and sound-insulating layer (3), a second vibration-damping and sound-insulating layer (4), an isolation layer (5), and a reinforced concrete slab (6) are sequentially arranged on the leveling layer (2) from bottom to top; the first vibration-damping and sound-insulating layer (3) comprises vibration-damping and sound-insulating blocks (31) arranged in a matrix shape and suction cotton (32) filled between the vibration-damping and sound-insulating blocks (31); the second vibration-damping and sound-insulating layer (4) comprises a pad (41) and a supporting vibration-damping pad (42) arranged on the pad (41).

2. The floating floor vibration reduction and sound insulation structure according to claim 1, characterized in that: An isolation pad (7) is also provided between the sound insulation structure and the vertical structure (8), and the isolation pad (7) is laid along the bottom edge of the vertical structure.

3. The floating floor vibration reduction and sound insulation structure according to claim 1, characterized in that: The vibration-damping and sound-insulating blocks (31) are polyurethane vibration-damping blocks or cork rubber vibration-damping blocks, with a single block size of 50×50×50mm or 70×70×70mm and a spacing of 300-600mm.

4. The floating floor vibration reduction and sound insulation structure according to claim 1, characterized in that: The attraction cotton (32) is centrifugal glass wool, and the top surface is at the same height as the vibration-damping sound insulation block (31).

5. The floating floor vibration reduction and sound insulation structure according to claim 1, characterized in that: The backing plate (41) is a flame retardant solid wood board, a multilayer board or a core board.

6. The floating floor vibration reduction and sound insulation structure according to claim 1, characterized in that: The backing plate (41) is a 2-3 mm thick steel plate.

7. The floating floor vibration reduction and sound insulation structure according to claim 1, characterized in that: The material of the supporting vibration damping pad (42) is rubber or polyurethane.

8. The floating floor vibration reduction and sound insulation structure according to claim 1, characterized in that: The isolation layer (5) is a PE film, and the films are overlapped and connected with waterproof adhesive strips.

9. The floating floor vibration reduction and sound insulation structure according to any one of claims 1 to 8, characterized in that: The thickness of the reinforced concrete slab (6) is 70mm~100mm.

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