CN215406827U

CN215406827U - Building floor sound insulation vibration damping structure

Info

Publication number: CN215406827U
Application number: CN202120049175.7U
Authority: CN
Inventors: 王昆; 吴必深; 邱丰; 李磊; 唐勇
Original assignee: China Construction Seventh Engineering Division Corp Ltd
Current assignee: China Construction Seventh Engineering Division Corp Ltd
Priority date: 2021-01-09
Filing date: 2021-01-09
Publication date: 2022-01-04
Anticipated expiration: 2031-01-09

Abstract

The utility model provides a sound insulation and vibration reduction structure for a building floor slab, which solves the problem that the existing sound insulation and vibration reduction structure for the floor slab occupies a large height of the inner layer of a house. The concrete floor comprises a concrete floor, the concrete floor comprises a floor concrete layer serving as a main body, a plurality of left and right through holes are formed in the middle of the floor concrete layer, a reinforcing mesh for enhancing bearing capacity is embedded in the floor concrete layer, silencing pipes are inserted in the holes and comprise metal pipes serving as outer layer supports, vertical energy dissipation metal plates are fixedly arranged at the top ends of the inner walls of the metal pipes at equal intervals along the axial direction, a distance is reserved between the lower ends of the energy dissipation metal plates and the bottoms of the inner walls of the metal pipes, sound absorption cotton is filled in the metal pipes, and plate bodies of the energy dissipation metal plates are wrapped in the sound absorption cotton. The improvement of the utility model basically does not change the thickness of the floor slab, can reserve the use space in the house to the maximum extent, and has good energy absorption and energy dissipation effects.

Description

Building floor sound insulation vibration damping structure

Technical Field

The utility model relates to the technical field of building floor slabs, in particular to a sound insulation and vibration reduction structure of a building floor slab.

Background

With the vigorous development of green buildings in China, a healthy and comfortable novel house is built, and the improvement of the living comfort level is the standing point and the starting point of building energy conservation. In order to respond to the twelve and five plans of the country, the energy saving of residential buildings reaches the level of 65 percent, and the requirements of green buildings on heat preservation and sound insulation of buildings are provided.

In order to save construction cost, the existing building individual floor is usually constructed by adopting a prefabricated plate with holes as a floor, pouring cement mortar on the prefabricated plate and floating the prefabricated plate. However, the floor sound insulation effect of the floor constructed by the construction mode often cannot meet the sound insulation requirement of the floor bottom plate in planning.

In order to solve the problem of sound insulation of floor slabs, one of the conventional common methods is to perform sound insulation treatment on the floor, and directly lay elastic materials such as carpets on the surface of the floor slab or use elastic finishing layers such as cork ground, plastic ground and the like to reduce the vibration of the floor slab and weaken the sound energy of impact sound. The other method adopts a 'floating building type floor slab'. Namely, an elastic cushion layer (such as wood wool board, sugar cane board, cork sheet, mineral wool felt, cotton felt and the like) is added between the floor slab and the surface layer. The elastic cushion layer completely isolates the floor from the surface layer, and has better sound insulation effect. Another way is to add a suspended ceiling under the floor. The greater the mass of the suspended ceiling, the stronger the integrity and the better the sound insulation effect. Suspended ceilings are primarily intended to insulate airborne sound generated by floor levels. In addition, if the suspended ceiling and the floor slab are elastically connected, the sound insulation capability can be greatly improved.

However, the three modes are integrally seen, the floor slab is not changed, the floor slab is subjected to thickening technical treatment, particularly, the floating floor slab and the suspended ceiling structure are adopted, the change of the thickness of the floor slab is more obvious, the height of the inner layer of the house is occupied, and the using space of the house is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sound insulation and vibration reduction structure for a building floor slab, aiming at solving the problem that the existing floor slab sound insulation and vibration reduction structure in the background technology occupies more height of the inner layer of a house.

The technical scheme of the utility model is as follows: building floor sound insulation damping structure, including concrete floor, concrete floor includes the floor concrete layer as the main part, floor concrete layer's middle part is equipped with a plurality of holes that are penetrating about controlling, the floor concrete in situ inlays and is equipped with the reinforcing bar net that is used for strengthening the bearing capacity, the hole interpolation is equipped with the hush pipe, the hush pipe is including the tubular metal resonator as outer support, the inner wall top of tubular metal resonator is equipped with vertical scattered can sheet metal piece along the fixed vertical that is equipped with of axial equidistance, the interval has been existed to the lower extreme of scattered ability sheet metal piece and the inner wall bottom of tubular metal resonator, the tubular metal resonator intussuseption is filled with and is inhaled the sound cotton, the body of scattered ability sheet metal piece is wrapped up in inhaling the sound cotton.

Preferably, the energy dissipation metal plate sheet is of a wave-shaped plate sheet structure.

Preferably, the energy dissipation metal plate comprises a spring steel sheet I, and the spring steel sheet I is perpendicular to the vertical axial section of the metal pipe.

Preferably, the spring steel sheet I is of a wave-shaped steel sheet structure, and the number of wave crests of the spring steel sheet I is two.

Preferably, the energy dissipation metal plate piece further comprises a spring steel sheet II, the surface of the spring steel sheet II is parallel to the vertical axial section of the metal pipe, and the spring steel sheet II is located on the axis of the metal pipe.

Preferably, the spring steel sheet II is of a wave-shaped steel sheet structure, and the number of wave crests of the spring steel sheet II is two.

Preferably, the spring steel sheets I and the spring steel sheets II are arranged in the metal pipe in a staggered and equidistant mode.

Preferably, the top of the concrete floor is provided with a damping base plate, the damping base plate is provided with a waterproof film, and the waterproof film is provided with a cement sound-absorbing board.

Preferably, the cement sound-absorbing plate is provided with honeycomb-hole-shaped sound-absorbing holes, and the sound-absorbing holes are of a vertically through structure.

The utility model has the advantages that: this device adopts and inserts the pipe of establishing amortization in original building floor inside, be used for reducing the noise, the pipe of amortization adopts the tubular metal resonator that the metal material made to support the skeleton as outside, not only play the effect of strengthening rib to the floor, and easily sound, vibrations are transmitted on the energy dissipation sheet metal, a plurality of energy dissipation sheet metal are under the effect of acoustic energy and shock energy, vibrate, cause from the scattered release energy of many nodes department, the regional centralization of conduction of reduction energy, and because the lower extreme of energy dissipation sheet metal is not connected and has the clearance with the inner wall bottom of tubular metal resonator, make the energy dissipation sheet metal when vibrating, it sends and vibrates can not directly reach the tubular metal bottom, but the vibration energy that the energy dissipation sheet metal sent is absorbed to the sound cotton of inhaling in the filled tubular metal, finally reach the purpose that reduces the upstairs acoustic energy and the shock energy that send.

Meanwhile, the energy dissipation metal plate is of a wave-shaped plate sheet structure, so that energy conducted to the spring steel sheet is gathered at a wave crest, then a large amount of energy is transversely dissipated to the periphery, the energy absorption effect of the sound absorption cotton is improved, the energy density conducted to the tail end of the spring steel sheet is reduced, and the noise reduction effect is better.

The improvement of the utility model is to improve the internal structure of the original building floor slab, basically does not change the thickness of the floor slab, and can reserve the use space in the house to the maximum extent. Meanwhile, the silencing pipe structure is arranged in the hole of the floor slab, so that the requirement on the thickness of the damping silencing structure on the floor slab can be reduced, and the purpose of reserving the use space in the house to the maximum extent is finally realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the main body of embodiment 1 of the present invention;

FIG. 2 is an enlarged view of a portion of the left end region of FIG. 1;

FIG. 3 is a block diagram of the silencer duct of FIG. 2;

FIG. 4 is a schematic structural diagram of the main body of embodiment 4 of the present invention;

in the figure, 1, a concrete floor slab, 101, a floor slab concrete layer, 102, a reinforcing mesh, 103, holes, 2, silencing pipes, 201, metal pipes, 202, spring steel sheets I and 203, spring steel sheets II and 204, sound-absorbing cotton, 3, a shock-absorbing base plate, 4, a waterproof film, 5, a cement sound-absorbing plate, 501 and sound-absorbing holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

Example 1: as shown in fig. 4, the sound insulation and vibration reduction structure for the building floor slab comprises a concrete floor slab 1, wherein the concrete floor slab 1 comprises a floor slab concrete layer 101 serving as a main body, a plurality of left and right through holes 103 are formed in the middle of the floor slab concrete layer 101, a reinforcing mesh 102 for enhancing bearing capacity is embedded in the floor slab concrete layer 101, and a silencing pipe 2 is inserted into the hole 103.

As shown in fig. 3, the silencer duct 2 includes a metal tube 201 as an outer support, vertical energy dissipation metal plates are fixed on the top end of the inner wall of the metal tube 201 at equal intervals along the axial direction, and a distance is reserved between the lower ends of the energy dissipation metal plates and the bottom of the inner wall of the metal tube 201.

The energy dissipation metal plate comprises a spring steel plate I202 and a spring steel plate II 203.

The spring steel sheet I202 is perpendicular to the vertical axial section of the metal tube 201. The spring steel sheet I202 is of a wave-shaped steel sheet structure, and the number of wave crests of the spring steel sheet I202 is two.

The plate surface of the spring steel sheet II203 is parallel to the vertical axial section of the metal tube 201, and the spring steel sheet II203 is positioned on the axial line of the metal tube 201. The spring steel sheet II203 is of a wave-shaped steel sheet structure, and the number of wave crests of the spring steel sheet II203 is two.

The spring steel sheets I202 and the spring steel sheets II203 are arranged in the metal pipe 201 in a staggered and equidistant mode.

The metal pipe 201 is filled with sound absorption cotton 204, and the plate bodies of the spring steel sheets I202 and II203 are wrapped in the sound absorption cotton 204.

The top of concrete floor 1 is equipped with shock attenuation backing plate 3, is equipped with waterproofing membrane 4 on the shock attenuation backing plate 3, is equipped with cement abatvoix 5 on the waterproofing membrane 4, is equipped with the sound hole 501 of honeycomb poroid on the cement abatvoix 5, and sound hole 501 is for lining up the structure from top to bottom.

The working principle is as follows: after sound enters the metal pipe 201 through the floor slab concrete layer 101, the sound is conducted and diffused along the axis of the metal pipe 201 in the left-right direction, and then conducted to the spring steel sheets I202 and the spring steel sheets II 203. The spring steel sheet I202 and the spring steel sheet II203 adopt different arrangement directions and are matched with peak structures of the spring steel sheets, so that energy conducted to the spring steel sheets is gathered at the peak, then a large amount of energy is transversely dispersed to the periphery, the energy absorption effect of the sound absorption cotton 204 is improved, the energy density conducted to the tail ends of the spring steel sheets is reduced, and the sound noise reduction effect is better.

This device adopts inside inserting of original building floor to establish noise elimination pipe 2 for reduce the noise, and noise elimination pipe 2 adopts the tubular metal resonator 201 that the metal material made as outside support skeleton, not only plays the effect of strengthening rib to floor 1, transmits sound, vibrations to scattered can the metal sheet on moreover easily.

The multiple energy dissipation metal plates vibrate under the action of sound energy and vibration energy, so that energy is dispersed and released from multiple nodes, and the concentration of energy conduction areas is reduced.

And because the lower extreme of scattered energy sheet metal is not connected and there is the clearance with the inner wall bottom of tubular metal resonator for when scattered energy sheet metal is shaking, it sends and shakes and can not directly reach the tubular metal resonator bottom, but is absorbed the vibration energy that scattered energy sheet metal sent by the sound cotton 204 of inhaling in the packing tubular metal resonator 201, finally reaches the purpose that reduces the sound energy and the shock energy that upstairs sent.

The improvement of this embodiment is to improving the internal structure of original building floor, does not basically change the thickness of floor, can furthest remain the inside usage space of house.

Example 2: building floor sound insulation damping structure, as shown in fig. 1 and fig. 2, the top of concrete floor 1 is equipped with shock attenuation backing plate 3, is equipped with waterproofing membrane 4 on the shock attenuation backing plate 3, is equipped with cement abatvoix 5 on the waterproofing membrane 4, is equipped with the sound hole 501 of honeycomb poroid on the cement abatvoix 5, and sound hole 501 is the upper and lower through structure. The other structure is the same as embodiment 1.

The working principle is as follows: the cement acoustic board 5 is used as the foundation of the installation floor, when sound firstly reaches the cement acoustic board 5, the sound is continuously reflected in the acoustic hole 501, the first energy reducing effect is carried out, the rest sound energy is further filtered by the shock absorption backing plate 3, and the rest sound is conducted and dispersed along the axis of the metal pipe 201 in the left-right direction after penetrating through the floor slab concrete layer 101 to enter the metal pipe 201 and then conducted to the spring steel sheets I202 and II 203. The spring steel sheet I202 and the spring steel sheet II203 adopt different arrangement directions and are matched with peak structures of the spring steel sheets, so that energy conducted to the spring steel sheets is gathered at the peak, then a large amount of energy is transversely dispersed to the periphery, the energy absorption effect of the sound absorption cotton 204 is improved, the energy density conducted to the tail ends of the spring steel sheets is reduced, and the sound noise reduction effect is better.

The silencing pipe structure is arranged in the hole of the floor slab, so that the requirement for improving the damping and silencing structure on the floor slab (such as the thickness of the arranged damping base plate 3) is reduced, and the purpose of reserving the use space in the house to the maximum extent is finally realized.

Example 3: a sound insulation and vibration reduction structure of a building floor slab is characterized in that a spring steel sheet I202 and a spring steel sheet II203 are both straight plate-shaped structures. The other structures are the same as those of embodiment 1.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. Building floor sound insulation damping structure, including concrete floor (1), concrete floor (1) is including floor concrete layer (101) as the main part, and the middle part of floor concrete layer (101) is equipped with a plurality of holes (103) that are penetrating about, and floor concrete layer (101) are embedded to be equipped with reinforcing bar net (102) that are used for strengthening the bearing capacity, its characterized in that: hole (103) interpolation is equipped with hush pipe (2), hush pipe (2) are including tubular metal resonator (201) as outer support, and the inner wall top of tubular metal resonator (201) is fixed along axial equidistance and is equipped with vertical scattered can sheet metal, and the lower extreme of scattered can sheet metal has the interval with the inner wall bottom of tubular metal resonator (201), and tubular metal resonator (201) intussuseption is filled with and inhales sound cotton (204), and scattered can sheet metal's board body is wrapped up in and is inhaled sound cotton (204).

2. A sound-insulating and vibration-damping structure for a building floor as claimed in claim 1, wherein: the energy dissipation metal plate is of a wave-shaped plate sheet structure.

3. A sound-insulating and vibration-damping structure for a building floor as claimed in claim 2, wherein: the energy dissipation metal plate comprises a spring steel sheet I (202), and the vertical axial sections of the spring steel sheet I (202) and the metal pipe (201) are perpendicular to each other.

4. A sound-insulating and vibration-damping structure for a building floor as claimed in claim 3, wherein: the spring steel sheet I (202) is of a wave-shaped steel sheet structure, and the number of wave crests of the spring steel sheet I (202) is two.

5. A sound-insulating and vibration-damping structure for building floor slabs according to claim 3 or 4, wherein: the energy dissipation metal plate further comprises a spring steel sheet II (203), the surface of the spring steel sheet II (203) is parallel to the vertical axial section of the metal pipe (201), and the spring steel sheet II (203) is located on the axis of the metal pipe (201).

6. A sound-insulating and vibration-damping structure for building floor slabs according to claim 5, wherein: the spring steel sheet II (203) is of a wave-shaped steel sheet structure, and the number of wave crests of the spring steel sheet II (203) is two.

7. A sound-insulating and vibration-damping structure for building floor slabs according to claim 6, wherein: the spring steel sheets I (202) and the spring steel sheets II (203) are arranged in the metal pipe (201) in a staggered and equidistant mode.

8. A sound-insulating and vibration-damping structure for building floor slabs according to claim 6 or 7, wherein: the top of concrete floor (1) is equipped with shock attenuation backing plate (3), is equipped with on shock attenuation backing plate (3) waterproof membrane (4), is equipped with cement abatvoix (5) on waterproof membrane (4).

9. A sound-insulating and vibration-damping structure for a building floor as claimed in claim 8, wherein: the cement sound-absorbing board (5) is provided with honeycomb-hole-shaped sound-absorbing holes (501), and the sound-absorbing holes (501) are of a vertically through structure.