CN-121976644-A - Dry floating floor structure with low-frequency vibration damping and sound insulation functions and construction method thereof

CN121976644ACN 121976644 ACN121976644 ACN 121976644ACN-121976644-A

Abstract

The invention discloses a dry floating floor structure with a low-frequency vibration damping and sound insulation function and a construction method thereof. The floor structure comprises a plurality of supporting units paved at intervals along a horizontal plane, wherein a first bearing plate layer, a sound insulation layer and a second bearing plate layer are sequentially arranged above the supporting units, the supporting units comprise a rubber base and a plurality of spiral springs, the rubber base comprises a flat-plate-shaped base body and a plurality of first bosses integrally formed on the base body, each first boss is provided with a cavity extending along the axial direction, the spiral springs are embedded into the wall corresponding to the first boss, the height of each first boss is larger than the thickness of the base body, and the top end and the bottom end of each spiral spring are respectively protruded out of the upper surface and the lower surface of the base body and are located between the upper end face and the lower end face of each first boss. The invention effectively isolates low-frequency impact vibration and suppresses resonance by utilizing the low-rigidity characteristic of the spiral spring and the high-damping characteristic of the rubber base, and simultaneously cuts off the solid sound propagation path.

Inventors

ZHANG YAOLIN
LIU HANZHI
TIAN LE
WU BO
CAO CHANG
CHANG MINGYUAN
YANG JINJIE
LI KEJUN
BAI YUZHU
XIE HUI
ZHOU GUOQING
PAN KE
ZHANG RONG

Assignees

中建科工集团有限公司

Dates

Publication Date: 20260505
Application Date: 20260228

Claims (10)

1. A dry floating floor structure with low-frequency vibration reduction and sound insulation functions is characterized by comprising a plurality of supporting units paved at intervals along a horizontal plane, wherein a first bearing plate layer, a sound insulation layer and a second bearing plate layer are sequentially arranged above the supporting units, each supporting unit comprises a rubber base and a plurality of spiral springs, each rubber base comprises a flat base body and a plurality of first bosses integrally formed on the base body, each first boss is provided with a cavity extending along the axial direction, each spiral spring is embedded in a wall body corresponding to the first boss, the height of each first boss along the axial direction is greater than the thickness of the base body, the top end of each spiral spring protrudes out of the upper surface of the base body and is lower than the upper end face of each first boss, and the bottom end of each spiral spring protrudes out of the lower surface of the base body and is higher than the lower end face of each first boss.
2. The dry floating floor structure according to claim 1, wherein the first boss is a cylindrical boss, the cavity is a cylindrical hole penetrating along the central axial direction of the first boss, the spiral spring is coaxially embedded in the annular wall of the first boss, the inner diameter of the spiral spring is larger than the diameter of the cavity, and the outer diameter of the spiral spring is smaller than the outer diameter of the first boss.
3. The dry floating floor structure of claim 2, wherein the free height of the coil spring is greater than the installation height of the coil spring embedded in the first boss.
4. The dry floating floor structure according to claim 1, wherein a surrounding flange is integrally formed on the outer peripheral side of the base body in the circumferential direction, the top end surface of the surrounding flange is higher than the upper surface of the base body and not higher than the upper end surface of the first boss, and the bottom end surface of the surrounding flange is lower than the lower surface of the base body and not lower than the lower end surface of the first boss.
5. The dry floating floor structure according to claim 1, wherein a hollow second boss is integrally formed in the middle of the base body, the spiral spring is not embedded in the wall body of the second boss, the upper end face of the second boss is higher than the upper surface of the base body and is not higher than the upper end face of the first boss, the lower end face of the second boss is lower than the lower surface of the base body and is not lower than the lower end face of the first boss, and a plurality of first bosses are arranged around the second boss.
6. The dry floating floor structure according to claim 1, wherein the upper end face and the lower end face of the first boss are respectively provided with an anti-slip pad.
7. The dry floating floor structure of claim 1 wherein said first load bearing board layer comprises at least two layers of cement fiberboard arranged in a staggered relationship between adjacent two layers of said cement fiberboard and said second load bearing board layer comprises at least one layer of cement fiberboard.
8. The dry floating floor structure according to claim 7, wherein the thickness of each cement fiber board layer in the first bearing board layer and the second bearing board layer is 10mm-20mm, and a facing layer is arranged above the second bearing board layer, and comprises a wood floor, a stone plastic floor or a sports floor glue.
9. The dry floating floor structure according to claim 1, wherein the sound insulation layer comprises at least two layers of asphalt sound insulation felts, two adjacent layers of asphalt sound insulation felts are arranged in a staggered joint mode, the thickness of each layer of asphalt sound insulation felt is 3mm-5mm, and the density is more than or equal to 1.8g/cm < 3 >.
10. A construction method of a dry-type floating floor structure, characterized in that the dry-type floating floor structure is the dry-type floating floor structure according to any one of claims 1 to 9, comprising the steps of: S1, arranging a plurality of supporting units on a base floor slab according to preset intervals; S2, paving the first bearing plate layer on the supporting unit, and if the first bearing plate layer is multi-layer, carrying out staggered joint treatment between layers; s3, paving the sound insulation layers on the first bearing plate layer, and if the sound insulation layers are multi-layered, performing staggered joint treatment between the layers; s4, paving the second bearing plate layer on the sound insulation layer; S5, installing a facing layer on the second bearing plate layer.

Description

Dry floating floor structure with low-frequency vibration damping and sound insulation functions and construction method thereof Technical Field The invention relates to the technical field of building sound insulation and vibration reduction, in particular to a dry floating floor structure with a low-frequency vibration reduction and sound insulation function and a construction method thereof. Background With the improvement of acoustic quality requirements of people on living environment, sound insulation and vibration reduction technologies of building floors are increasingly paid attention to. At present, the existing floor sound insulation measures mostly adopt concrete composite floor slabs or traditional floating floor structures, and the technologies can generally meet the isolation requirement of vertical sound transmission among floors, and have a certain blocking effect on medium-high frequency air sound generated in daily life. However, in practical applications, existing floor structures still have shortcomings in dealing with low frequency impact noise. When activities such as fast walking, jumping or heavy object landing occur indoors, the generated low-frequency vibration is very easy to break through the protection of the floor slab, is transmitted to adjacent rooms, and even affects the silence of the outdoor environment. When the existing treatment scheme is used for dealing with low-frequency noise with wide range and strong penetrating power, the satisfactory mute standard is difficult to achieve, and the problem of noise interference still exists in the neighborhood or indoor and outdoor. In addition, some existing floating floor structures often have difficulty maintaining stable sound insulation performance in the face of high energy weight impact sources such as children running, adults stepping on again, and the like. Meanwhile, the traditional construction method generally needs to change the original building structure to a large extent, and the related wet working procedures are more, so that not only is the delivery affected by the long construction period, but also the construction convenience requirement of the quick reconstruction of the existing building is difficult to meet. Disclosure of Invention The invention mainly aims to provide a dry floating floor structure with a low-frequency vibration damping and sound insulation function and a construction method thereof, so as to solve the technical problems. The invention provides a dry floating floor structure with a low-frequency vibration reduction and sound insulation function, which comprises a plurality of supporting units paved at intervals along a horizontal plane, wherein a first bearing plate layer, a sound insulation layer and a second bearing plate layer are sequentially arranged above the supporting units, each supporting unit comprises a rubber base and a plurality of spiral springs, the rubber base comprises a flat base body and a plurality of first bosses integrally formed on the base body, each first boss is provided with a cavity extending along the axial direction, the spiral springs are embedded in walls corresponding to the first bosses, the height of each first boss along the axial direction is larger than the thickness of the base body, the top ends of the spiral springs protrude out of the upper surface of the base body and are lower than the upper end faces of the first bosses, and the bottom ends of the spiral springs protrude out of the lower surface of the base body and are higher than the lower end faces of the first bosses. In a second aspect, the present invention also provides a construction method of the dry floating floor structure of the first aspect, the construction method comprising the steps of: the method comprises the steps of S1, laying a plurality of supporting units on a base floor according to preset intervals, S2, laying a first bearing plate layer on the supporting units, carrying out staggered joint treatment between layers if the first bearing plate layer is multi-layered, S3, laying a sound insulation layer on the first bearing plate layer, carrying out staggered joint treatment between layers if the sound insulation layer is multi-layered, S4, laying a second bearing plate layer on the sound insulation layer, and S5, installing a facing layer on the second bearing plate layer. The composite vibration reduction and sound insulation structure has the beneficial technical effects that the support unit comprising the rubber base and the spiral spring is arranged between the base floor slab and the first bearing plate layer, and the sound insulation layer is combined to form the composite vibration reduction and sound insulation structure. The structure reduces the natural frequency of the system by utilizing the low-stiffness characteristic of the spiral spring to isolate low-frequency vibration, and simultaneously suppresses resonance peak values by utilizing the high-damping ch