CN112302290A

CN112302290A - Integrally-cast sound insulation and vibration reduction cavity ground structure and construction method

Info

Publication number: CN112302290A
Application number: CN202011147053.8A
Authority: CN
Inventors: 邵明章; 李明涛; 王国志; 李松涛
Original assignee: China Besheng Construction Development Co ltd
Current assignee: China Besheng Construction Development Co ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-02-02

Abstract

The application relates to an integrally cast sound insulation and vibration reduction cavity ground structure and a construction method, wherein the integrally cast sound insulation and vibration reduction cavity ground structure comprises a cushion net laid on the upper surface of an original floor slab, countersunk head bolts arranged on the cushion net at intervals and used for fixing the rubber cushion net on the upper surface of the original floor slab, a partition board laid on the upper surface of the cushion net, waterproof cloth bonded on the upper surface of the partition board and a floor panel poured on the waterproof cloth. A construction method of an integrally cast sound insulation and vibration reduction cavity ground structure comprises the following steps: cleaning and leveling the upper surface of the original floor; paving a cushion net on the upper surface of the original floor; laying the isolation plate on the cushion net; performing waterproof treatment on the upper surface of the isolation plate; and pouring floor panels on the upper surfaces of the waterproof cloths on the partition boards. This application belongs to building structure's technical field, and it has the effect that improves the sound insulation damping performance on building floor ground.

Description

Integrally-cast sound insulation and vibration reduction cavity ground structure and construction method

Technical Field

The application relates to the technical field of building structures, in particular to an integrally-cast sound insulation and vibration reduction cavity ground structure and a construction method.

Background

At present, building noise comprises two forms of air sound and impact sound, most of noise transmitted through a floor slab belongs to the impact sound, in a general building, the floor slab is a main building component generating the impact noise, for example, objects impact the floor slab, equipment vibration and the like can generate pile foundation noise, the pile foundation noise of the floor slab can be directly transmitted to a room below the floor slab through the floor slab, the energy generated by impact is large, the attenuation quantity of vibration transmitted in a building structure is very small, so that the vibration generated by impact can be transmitted far along a continuous structure, the impact sound influence range is wide, and serious noise pollution is caused In the floor sound insulation and vibration reduction disposal engineering of public buildings such as office buildings and commercial spaces, the floor slabs and vibration reduction cushion layers in the related technology can not meet the requirements.

In view of the above-mentioned related art, the inventor believes that there is a defect that sound insulation and shock absorption effects are poor in floors in the related art.

Disclosure of Invention

In order to improve the sound insulation and vibration reduction performance of the floor of a building, the application provides an integrally cast sound insulation and vibration reduction cavity ground structure and a construction method.

In a first aspect, the application provides an integrally cast sound insulation and vibration reduction cavity ground structure, which adopts the following technical scheme:

the utility model provides a formula sound insulation damping cavity ground structure wholly pours, establishes on the blotter net including laying the blotter net on former floor upper surface, interval and is used for fixing the countersunk head bolt on floor upper surface with the rubber pad net, lays the division board on the blotter net upper surface, bonds the waterproof cloth on the division board upper surface and pours the floor panel on the waterproof cloth.

Through adopting above-mentioned technical scheme, the tarpaulin in this application plays waterproof effect, make this application more durable, the floor panel plays supporting role, and lay the cushion net on former floor upper surface in order to play and carry out cushioning effect to cushion net superstructure, and the cushion net combines into the structure similar to the spring with superstructure, constitute a vibration isolation system, can effectual reduction floor impact sound's propagation, play the effect of sound insulation damping, in addition, form a plurality of cavitys between division board and the former floor upper surface, a propagation for blockking some sound, the performance of making an uproar falls in the sound insulation of improvement building structure.

Optionally, the cushion net comprises a flexible net frame flatly laid on the upper surface of the original floor slab and cushion blocks fixedly connected to the flexible net frame at intervals.

Through adopting above-mentioned technical scheme, flexible rack and cushion block connect into whole cushion net, make the setting of laying cushion block more convenient and fast, when cushion net superstructure received the striking, energy transfer is gone up the back to cushion net, and partly is born by cushion block, and another part can transmit to make flexible rack vibration with consuming some energy on the flexible rack, plays the effect that improves sound insulation damping performance.

Optionally, the cushion net further comprises elastic energy absorbing members, two ends of each elastic energy absorbing member are fixedly connected with the cushion blocks arranged diagonally.

By adopting the technical scheme, the elastic energy absorbing piece is connected with the cushion pads on each diagonal line on the cushion pad net, so that the sound wave energy and vibration transmitted from the cushion pads are further absorbed, and the sound insulation and vibration reduction performance of the cushion pad net is better.

Optionally, sound absorption tampons are bonded to the lower surface of the isolation plate at intervals.

Through adopting above-mentioned technical scheme, the sound absorption silver can absorb some sound, improves the sound insulation of this application and falls the performance of making an uproar.

Optionally, the floor panel includes the reinforcing bar rack and pours fashioned concrete piece with reinforcing bar rack an organic whole.

Through adopting above-mentioned technical scheme, the reinforcing bar rack is as skeleton bearing structure and concrete placement shaping, makes the intensity of whole pouring formula sound insulation damping cavity ground structure obtain improving, and then improves the bearing capacity of floor panel.

Optionally, a plurality of damping boxes are arranged in the middle of the reinforcing steel bar net rack at intervals, and a plurality of springs are arranged in the damping boxes.

Through adopting above-mentioned technical scheme, the spring in the damping box can take place to stretch out and draw back when the floor panel receives the striking, consumes the energy that the striking produced, makes the decrement increase of vibration in the transmission process, has played better sound insulation damping effect.

Optionally, a plurality of said springs are connected together by a rubber ball.

Through adopting above-mentioned technical scheme, the rubber ball can be with the energy through the spring transmission through the friction consumption between rubber ball and the damping box surface, further improvement this application's sound insulation damping performance.

Optionally, the concrete block is formed by sequentially pouring a coagulated damping mortar layer, a cement raw mortar layer and a common mortar layer from bottom to top.

By adopting the technical scheme, the damping mortar layer is made of fine powder, sand and rubber, and the aggregate can form a loose elastic structure, so that the damping effect of the mortar is improved, the energy generated when part of the floor slab is impacted is absorbed, and the sound insulation and vibration reduction performance of the floor slab is improved.

In a second aspect, the present application provides a construction method for manufacturing a monolithic casting type vibration damping cavity ground structure, where the following technical scheme is adopted for manufacturing the monolithic casting type vibration damping cavity ground structure described in the first aspect:

a construction method of an integrally cast type vibration reduction cavity ground structure comprises the following steps:

cleaning and leveling the upper surface of the original floor;

paving a cushion net on the upper surface of the original floor;

laying a barrier sheet on the cushion net;

carrying out waterproof treatment on the upper surfaces of the isolation plates, firstly pasting waterproof adhesive tapes on connecting seams between the isolation plates, and then paving waterproof cloth on the upper surfaces of the isolation plates;

the floor panel is poured on the upper surface of the waterproof cloth on the isolation board, firstly, a steel bar net rack is bound on the upper surface of the waterproof cloth, then, damping mortar, cement raw stock and common mortar are sequentially poured and are coagulated with the steel bar net rack to form a concrete block.

By adopting the technical scheme, the manufactured integrally-poured sound insulation and vibration reduction cavity ground structure has better sound insulation and vibration reduction performance and can play a role in noise reduction and vibration isolation.

Optionally, when the step of pouring the floor panel on the upper surface of the waterproof cloth on the isolation board is performed, the raw materials for preparing the damping mortar are fine powder, sand and rubber particles, and the component ratio is 1: 4: 0.85.

by adopting the technical scheme, the higher the proportion of the rubber particles is, the better the sound insulation effect of the concrete block is, but the strength and the bearing capacity can be reduced, so that the fine powder, the sand and the rubber particles are 1: 4: the damping mortar layer made of 0.85 can guarantee the structural strength and simultaneously give consideration to better sound insulation and vibration reduction performance.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the buffer cushion net plays a role in buffering the upper layer structure of the buffer cushion net, and the buffer cushion net and the upper layer structure are combined into a structure similar to a spring to form a vibration isolation system, so that the transmission of floor impact sound can be effectively reduced, the effects of sound insulation and vibration reduction are achieved, in addition, a plurality of cavities are formed between the isolation plate and the upper surface of the original floor, the cavities are used for blocking the transmission of part of sound, and the sound insulation and noise reduction performance of the building structure is improved;

2. according to the application, the spring in the damping box can stretch out and draw back when the floor panel is impacted, so that energy generated by impact is consumed, the attenuation of vibration in the propagation process is increased, and a better sound insulation and vibration damping effect is achieved;

3. the damping mortar layer in the application can improve the damping effect of the mortar, absorb the energy generated when part of the floor slab is impacted, and improve the sound insulation and vibration reduction performance of the floor panel.

Drawings

FIG. 1 is a schematic overall structure diagram of a one-piece casting type sound insulation and vibration reduction cavity ground structure in an embodiment of the application.

Fig. 2 is a schematic structural diagram of a cushion net and a countersunk head bolt in the embodiment of the application.

Fig. 3 is a schematic structural diagram of a partition board and a waterproof cloth in the embodiment of the application.

Fig. 4 is a schematic structural diagram of a reinforcing steel bar net rack and a damping box in the embodiment of the application.

Fig. 5 is a sectional view for showing an internal structure of a damper box in the embodiment of the present application.

FIG. 6 is a block diagram of a construction method of a one-piece casting type sound insulation and vibration reduction cavity ground structure in an embodiment of the application.

Description of reference numerals: 11. a cushion net; 111. a flexible net frame; 112. buffering cushion blocks; 113. an elastic energy absorbing member; 21. a countersunk bolt; 31. a separator plate; 311. a sound absorbing tampon; 41. waterproof cloth; 51. a floor panel; 511. a steel bar net rack; 512. a concrete block; 5121. a damping mortar layer; 5122. a cement raw slurry layer; 5123. a common mortar layer; 513. a vibration damping box; 514. a spring; 515. a rubber ball.

Detailed Description

The present application is described in further detail below with reference to figures 1-6. It can be understood that in some places with high requirements on building acoustics, people pay attention to sound insulation and vibration reduction performance of buildings, and most of the sources of noise and vibration are that sound and vibration generated when people moving on the upper layer drag a table, objects fall or strike the ground, and heels of shoes step on the ground have great influence on people on the lower layer. Therefore, this application helps reducing the influence that noise and vibration that the floor produced when receiving the striking led to the fact the personnel of lower floor's activity through making whole pouring formula sound insulation damping cavity ground on former floor, improves the sound insulation damping performance between the building floor, improves the use comfort of building.

The embodiment of the application discloses a whole pouring type sound insulation and vibration reduction cavity ground structure. Referring to fig. 1 and 2, the integrally cast sound insulation and vibration reduction cavity ground structure includes a cushion net 11, a countersunk bolt 21, a partition plate 31, a waterproof cloth 41 and a floor panel 51. Wherein the cushion net 11 is laid on the upper surface of the original floor slab by using an adhesive and a countersunk bolt 21, the partition board 31 is laid on the upper surface of the cushion net 11, the waterproof cloth 41 is adhered on the upper surface of the partition board 31, and the floor panel 51 is disposed on the upper surface of the waterproof cloth 41.

Referring to fig. 2, the cushion net 11 includes a flexible net frame 111 and cushion blocks 112, the flexible net frame 111 is a net woven by nylon ropes, plastic ropes or hemp ropes, the cushion blocks 112 are cylinders or rectangular blocks made of rubber materials, the cushion blocks 112 are sleeved and bonded to each node of the flexible net frame 111, and a plurality of cushion blocks 112 are distributed on the flexible net frame 111 in a mesh-like manner and form the cushion net 11 with the flexible net frame 111.

Furthermore, in order to enhance the performance of the cushion net 11 consuming energy generated by impact, an elastic energy absorbing member 113 is fixedly connected between every two cushion blocks 112 located on the diagonal, and the elastic energy absorbing member may be an elastic rope or a tension spring.

Referring to fig. 2, the number of the countersunk head bolts 21 is plural, and the countersunk head bolts pass through the cushion pads 112 respectively and are then fixed on the original floor, so that the entire cushion net 11 is fixedly laid on the upper surface of the original floor. Of course, in some other embodiments of the present application, in order to improve the construction efficiency, the adhesive may also be directly applied to the lower surface of the cushion pad 112, so that the cushion pad 112 is uniformly adhered to the upper surface of the original floor.

Referring to fig. 1 and 3, the isolation plates 31 may be made of galvanized steel, and when the isolation plates 31 are laid, the bottom surfaces of the isolation plates 31 and the upper surfaces of the cushion blocks 112 may be bonded together by using an adhesive, so that the isolation plates 31 are spliced together, and a gap between every two isolation plates 31 is sealed by using a waterproof adhesive tape. So far, the isolation plate 31, the upper surface of the original floor and the surrounding building wall surface enclose a closed sound insulation and vibration reduction cavity to reduce the noise and vibration transmission between the upper floor and the lower floor.

In addition, for making the sound insulation effect of division board 31 better, it has many absorbent cotton slivers 311 still to bond on every division board 31's the lower surface, absorbent cotton sliver 311 can adopt the pyramid to inhale the cotton and make, the pyramid inhales the cotton and is a sponge material that forms the unsmooth wave shape of one side through special treatment, it can absorb the sound wave energy of penetrating in a large number to be full of tiny space and half open pore structure inside, play the attenuation to the sound wave, can reduce the interference and the reverberation of indoor reflection sound, improve the sound insulation and the noise reduction performance of division board 31.

Referring to fig. 1 and 3, the waterproof cloth 41 may be adhered to the upper surface of the partition plate 31 by using PVC plastic coated cloth, glass fiber plastic coated cloth, or tarpaulin. Of course, for buildings with high waterproof performance, in other embodiments of the present application, the waterproof roll may be hot-melt bonded on the isolation board 31 to form a waterproof layer structure.

Referring to fig. 1, the floor panel 51 includes a steel bar net rack 511 and a concrete block 512, the steel bar net rack 511 is a frame formed by binding or welding steel bars, and the concrete block 512 and the steel bar net rack 511 are integrally poured and condensed to form the floor panel 51.

Referring to fig. 4 and 5, the bottom of the reinforcing bar net rack 511 abuts against the upper surface of the waterproof cloth 41, and at this time, the partition plate 31 provides support for the reinforcing bar net rack 511. Further, for the sound insulation damping performance that improves floor panel 51, still set up a plurality of damping boxes 513 at the interval in reinforcing bar rack 511, damping box 513 can be the cavity that is formed by the welding of polylith metal sheet and sealed box body and fix on reinforcing bar of reinforcing bar rack 511 through welded connected mode, be equipped with many springs 514 in the damping box 513, the other end of spring 514 is connected on same rubber ball 515 of placing in damping box 513, when the floor received the striking, the energy transmission of vibration and sound wave makes spring 514 flexible in damping box 513, and then drive rubber ball 515 and remove in damping box 513, make the energy consumed through the flexible and the removal of rubber ball 515 of spring 514, thereby improve sound insulation damping performance.

Referring to fig. 1, the concrete block 512 is mainly composed of a damping mortar layer 5121, a cement paste layer 5122 and a common mortar layer 5123 which are poured and coagulated from bottom to top in sequence. The damping mortar layer 5121 is formed by pouring slurry made of fine powder, sand and rubber particles. Then, the ratio of 0.6: 1, pouring cement raw slurry made of water and cement on the damping mortar layer 5121 to form a cement raw slurry layer 5122, and finally pouring common concrete mortar on the cement raw slurry layer 5122 to form a common mortar layer 5123.

It is understood that in order to reduce the propagation of sound waves and vibration through the wall to the lower buildings, in other embodiments of the present application, when the damping mortar layer 5121 is poured, a protrusion may be disposed at an edge position of the damping mortar layer 5121 so as to be attached to the wall, and an upper surface of the protrusion is flush with the uppermost common mortar layer 5123, and then the protrusion is bonded with the fireproof silica gel for sealing.

The application embodiment of the construction method of the integral casting type vibration reduction cavity ground structure is also disclosed, the construction method is used for manufacturing the integral casting type vibration reduction cavity ground structure disclosed by the embodiment, and referring to fig. 6, the construction method of the integral casting type vibration reduction cavity ground structure comprises the following steps:

s101: and cleaning and leveling the upper surface of the original floor.

The ground in the whole construction site is cleaned, and the laitance, the bulges and the like on the upper surface of the original floor are polished. Then, a 1: 2, leveling by cement mortar, and controlling the surface flatness within plus or minus 5 mm.

S102: a cushion net 11 is laid on the upper surface of the original floor.

Firstly, lofting is carried out on the upper surface of the original floor after leveling, then the cushion net 11 is flatly laid on the upper surface of the original floor, the cushion net 11 is fixed in position by using a countersunk head bolt 21, and the cushion net 11 can be further fixedly bonded on the upper surface of the original floor by using an adhesive.

S103: the partition plate 31 is laid on the cushion net 11.

The adhesive is applied to the lower surface of the isolation plate 31 and the upper surface of the cushion pad 112, so that the isolation plate 31 and the cushion pad 112 are bonded together.

S104: the upper surface of the partition plate 31 is subjected to waterproofing treatment.

Firstly, the joint between the isolation plates 31 is adhered and sealed by waterproof adhesive tape, then the waterproof cloth 41 is laid on the upper surface of the isolation plate 31, the adhesion is completed as soon as possible in the laying process, and air bubbles between the waterproof cloth 41 and the upper surface of the isolation plate 31 are reduced.

S105: a floor panel 51 is cast on the upper surface of the tarpaulin on the insulation panel 31.

Firstly, a reinforcing steel bar net rack 511 is bound on the upper surface of the waterproof cloth 41, then, damping mortar, cement raw stock and common mortar are sequentially poured and are coagulated with the reinforcing steel bar net rack 511 to form a concrete block 512, and the concrete block 512 and the reinforcing steel bar net rack 511 form a floor panel 51.

Furthermore, in order to make the damping sound insulation and vibration reduction effects of the damping mortar better and ensure that when the operation of the step S105 is performed, the raw material for preparing the damping mortar is the mortar prepared from the mixture of fine powder, sand and rubber particles, and the component ratio of the fine powder, the sand and the rubber particles is 1: 4: 0.85.

the above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a formula sound insulation damping cavity ground structure of pouring entirely which characterized in that: the floor comprises a cushion net (11) paved on the upper surface of an original floor, countersunk bolts (21) which are arranged on the cushion net (11) at intervals and are used for fixing the rubber cushion net (11) on the upper surface of the floor, a partition board (31) paved on the upper surface of the cushion net (11), waterproof cloth (41) bonded on the upper surface of the partition board (31) and a floor panel (51) poured on the waterproof cloth (41).

2. The integrally cast sound-insulation vibration-damping cavity ground structure according to claim 1, characterized in that: the cushion net (11) comprises a flexible net rack (111) tiled on the upper surface of the original floor slab and cushion blocks (112) fixedly connected to the flexible net rack (111) at intervals.

3. The integrally cast sound-insulation vibration-damping cavity ground structure according to claim 2, characterized in that: the cushion net (11) also comprises elastic energy absorbing pieces (113) with two ends fixedly connected with the cushion blocks (112) arranged diagonally.

4. The integrally cast sound-insulation vibration-damping cavity ground structure according to claim 1, characterized in that: and sound absorption tampons (311) are bonded on the lower surface of the isolation plate (31) at intervals.

5. The integrally cast sound-insulation vibration-damping cavity ground structure according to claim 1, characterized in that: the floor panel (51) comprises a reinforcing steel bar net rack (511) and a concrete block (512) which is integrally cast with the reinforcing steel bar net rack (511).

6. The integrally cast sound-insulation vibration-damping cavity ground structure according to claim 5, wherein: a plurality of vibration reduction boxes (513) are arranged in the reinforcing steel bar net rack (511) at intervals, and a plurality of springs (514) are arranged in the vibration reduction boxes (513).

7. The integrally cast sound-insulation vibration-damping cavity ground structure according to claim 6, wherein: a plurality of the springs (514) are connected together by rubber balls (515).

8. The integrally cast sound-insulation vibration-damping cavity ground structure according to claim 5, wherein: the concrete block (512) is formed by sequentially pouring a coagulated damping mortar layer (5121), a cement raw mortar layer (5122) and a common mortar layer (5123) from bottom to top.

9. A construction method of a one-piece casting type vibration-damping cavity ground structure for manufacturing the one-piece casting type vibration-damping cavity ground structure as claimed in any one of claims 1 to 8, comprising the steps of:

cleaning and leveling the upper surface of the original floor;

paving a cushion net (11) on the upper surface of the original floor;

laying the isolation board (31) on the cushion net (11);

the upper surfaces of the isolation plates (31) are subjected to waterproof treatment, waterproof adhesive tapes are pasted at connecting seams among the isolation plates (31), and then waterproof cloth (41) is laid on the upper surfaces of the isolation plates (31);

the floor panel (51) is poured on the upper surface of the waterproof cloth (41) on the isolation board (31), firstly, a reinforced net rack (511) is bound on the upper surface of the waterproof cloth (41), and then, the concrete block (512) is formed after the concrete block is poured by using damping mortar, cement raw stock and common mortar in sequence and is coagulated with the reinforced net rack (511).

10. The construction method of the one-piece casting type vibration damping cavity ground structure according to claim 9, characterized in that: when the step of pouring the floor panel (51) on the upper surface of the waterproof cloth (41) on the isolation board (31), raw materials for preparing the damping mortar are fine powder, sand and rubber particles, and the component ratio is 1: 4: 0.85.