CN217734415U

CN217734415U - Energy dissipation and vibration isolation system for tunnel upper cover building

Info

Publication number: CN217734415U
Application number: CN202221482411.5U
Authority: CN
Inventors: 叶冬明; 郭健宝; 施益龄; 肖志礼; 陈明; 李武
Original assignee: Zhejiang Zhegongda Detection Technology Co ltd; Hangzhou Metro Development Co ltd; Zhejiang Zhongnan Construction Group Co Ltd
Current assignee: Zhejiang Zhegongda Detection Technology Co ltd; Hangzhou Metro Development Co ltd; Zhejiang Zhongnan Construction Group Co Ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-11-04
Anticipated expiration: 2032-06-14

Abstract

The utility model provides an energy consumption vibration isolation system for tunnel upper cover building, includes anti kickboard, waterproof layer, concrete cushion and soil layer, set gradually concrete cushion and waterproof layer on the soil layer, its characterized in that, energy consumption vibration isolation system still includes the damping bed course, the damping bed course is located between waterproof layer and the anti kickboard, the damping bed course from the top down sets gradually porous concrete layer, bituminous mixture layer, well porous concrete layer, macromolecular compound class layer and porous concrete layer down. The utility model discloses to the vibration of superstructure when can effectively reducing the subway through the building below, reduce because of the negative effects that low frequency vibration caused building structure stability, resident comfort level, precision instrument accuracy etc. and build low cost simultaneously, the construction degree of difficulty is low.

Description

Energy dissipation and vibration isolation system for tunnel upper cover building

Technical Field

The utility model discloses the field of making an uproar, concretely relates to power consumption vibration isolation system for tunnel upper cover building is fallen in the damping.

Background

With the development of social economy, ground traffic is increasingly congested, so people aim at underground traffic. In some cities in China, underground traffic forms a huge system, which is convenient for people to go out daily, but brings certain negative effects. When subway passes under a building, the vibrations generated can have a series of adverse effects on the superstructure. Therefore, it is necessary to take corresponding measures to reduce the propagation of the vibrations.

Disclosure of Invention

In order to overcome the not enough of prior art, the utility model provides an energy dissipation vibration isolation system for tunnel upper cover building can effectively reduce the subway to superstructure's vibration when through the building below, reduces because of the negative effects that low frequency vibration caused building structure stability, resident comfort level, precision instrument accuracy etc. low cost is built to the while, and the construction degree of difficulty is low.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides an energy consumption vibration isolation system for tunnel upper cover building, includes anti kickboard, waterproof layer, concrete cushion and soil layer, set gradually concrete cushion and waterproof layer on the soil layer, its characterized in that, energy consumption vibration isolation system still includes the damping bed course, the damping bed course is located between waterproof layer and the anti kickboard, the damping bed course from the top down sets gradually porous concrete layer, bituminous mixture layer, well porous concrete layer, macromolecular compound class layer and lower porous concrete layer.

Further, the upper porous concrete layer, the middle porous concrete layer and the lower porous concrete layer are of double-layer structures, and the upper layer and the lower layer are formed in a staggered mode.

And furthermore, the asphalt mixture layer is a rubber particle asphalt mixture layer.

The macromolecular compound layer is a microporous polyurethane damping material layer.

The upper porous concrete layer, the middle porous concrete layer and the lower porous concrete layer are polypropylene fiber porous concrete layers.

And a protective layer is arranged between the damping cushion layer and the anti-floating plate.

The protective layer is a concrete layer.

And furthermore, a leveling layer and an isolating layer are arranged between the lower porous concrete layer and the waterproof layer.

The leveling layer is an EPS foam concrete layer, and the isolation layer is a plain concrete layer.

The thickness of the protective layer is 15mm, the thickness of the damping cushion layer is 120-200mm, the thickness of the leveling layer is 15-20mm, and the thickness of the isolation layer is 10-20mm.

In the damping cushion layer, the thickness of the asphalt mixture layer is 30-40mm, the thickness of the polymer compound layer is 60-120mm, and the thickness of the upper porous concrete layer, the middle porous concrete layer and the lower porous concrete layer is 30-40mm.

The utility model discloses in, possess great acoustic absorption coefficient through self through rubber granule bituminous mixture in the damping bed course and absorb the noise that the subway operation produced, the absorption impact property and the polypropylene fiber porous concrete's of reducing vibration and micropore polyurethane damping material reflection and acoustic absorptivity realize reflection and the consumption to the shock wave to reduce and transmit the vibration on the building, reduce the negative effects to building structural stability, resident's comfort level, precision instrument accuracy etc..

The beneficial effects of the utility model are that: 1. the vibration to superstructure when can effectively reduce the subway through the building below. 2. The negative influence on the stability of the building structure, the comfort of residents, the precision of precision instruments and the like caused by low-frequency vibration is reduced. 3. The construction cost is low, and the construction difficulty is low.

Drawings

Fig. 1 is a schematic cross-sectional view of an energy-dissipating and vibration-isolating system for a tunnel upper cover building, wherein 1-position anti-floating plate, 2 are vibration-damping cushions, and 3 are multi-line tunnels; 4 is a pile.

Fig. 2 is a schematic structural view of the damping shim.

Fig. 3 is a schematic cross-sectional view of a vibration damping shim.

Fig. 4 is a diagram of the damping effect of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 to 4, an energy dissipation and vibration isolation system for a tunnel upper cover building comprises an anti-floating plate 1, a waterproof layer 5, a concrete cushion 6 and a soil layer, wherein the concrete cushion 6 and the waterproof layer 5 are sequentially arranged on the soil layer, the energy dissipation and vibration isolation system further comprises a vibration reduction cushion 2, the vibration reduction cushion 2 is positioned between the waterproof layer 5 and the anti-floating plate 1, and the vibration reduction cushion 2 is sequentially provided with an upper porous concrete layer 201, an asphalt mixture layer 202, a middle porous concrete layer 203, a polymer compound layer 204 and a lower porous concrete layer 205 from top to bottom.

Further, the upper porous concrete layer 201, the middle porous concrete layer 203 and the lower porous concrete layer 205 are of a double-layer structure, and the upper layer and the lower layer are formed in a staggered mode.

Still further, the asphalt mixture layer 202 is a rubber particle asphalt mixture layer.

The polymer layer 204 is a microporous polyurethane damping material layer.

The upper porous concrete layer 201, the middle porous concrete layer 203 and the lower porous concrete layer 205 are polypropylene fiber porous concrete layers.

And a protective layer 7 is arranged between the damping cushion layer 2 and the anti-floating plate 1.

Preferably, the protective layer 7 is a concrete layer.

Still further, a leveling layer 8 and an isolation layer 9 are arranged between the lower porous concrete layer 205 and the waterproof layer 5.

The leveling layer 8 is an EPS foam concrete layer, and the isolation layer 9 is a plain concrete layer.

The thickness of the protective layer 8 is 15mm, the thickness of the vibration damping cushion layer 2 is 120-200mm, the thickness of the leveling layer 9 is 15-20mm, and the thickness of the isolation layer 11 is 10-20mm.

In the vibration damping cushion layer 2, the thickness of the asphalt mixture layer 202 is 30-40mm, the thickness of the polymer compound layer 204 is 60-120mm, and the thicknesses of the upper porous concrete layer 201, the middle porous concrete layer 203 and the lower porous concrete layer 205 are 30-40mm.

The utility model discloses an adopt above-mentioned kind of bituminous mixture bed, utilize the great acoustic absorption coefficient that rubber granule bituminous mixture itself possessed, the noise that absorbs subway operation and produce reaches the purpose that reduces vibration. By adopting the macromolecular compound layer, the spherical closed cells are compressed and deformed to form an air cushion when the microporous polyurethane material is stressed, and the characteristic that the spherical closed cells are easy to quickly recover when the acting force disappears is used for absorbing and reducing the vibration waves generated during the operation of the subway due to the short response time of the air to the force.

In this embodiment, the protective layer is a concrete layer with a thickness of 15mm, the asphalt mixture layer 202 is a rubber particle asphalt mixture layer with a thickness of 30-40mm (30 mm is adopted), the polymer compound layer 204 is a microporous polyurethane vibration damping material layer with a thickness of 60-120mm (60 mm is adopted), the upper porous concrete layer 201, the middle porous concrete layer 203 and the lower porous concrete layer 205 are polypropylene fiber porous concrete layers with a single-layer thickness of 10-13mm (10 mm is adopted), and each two layers are a group and are formed by holes in a staggered manner; the leveling layer 10 is an EPS foam concrete layer with the thickness of 15-20mm (adopting 15 mm), the isolation layer 11 is a plain concrete layer with the thickness of 10-20mm (adopting 10 mm), the waterproof layer 5 is a waterproof coiled material with the thickness of 2.5mm, and the thickness of the concrete cushion layer 6 is 15mm.

The embodiments described in this specification are merely exemplary of implementations of the inventive concepts, and are provided for illustrative purposes only. The scope of the present invention should not be construed as being limited to the particular forms set forth in the following description, but is to be accorded the widest scope consistent with the principles and novel features as contemplated by the present invention.

Claims

1. The utility model provides an energy consumption vibration isolation system for tunnel upper cover building, includes anti kickboard, waterproof layer, concrete cushion and soil layer, set gradually concrete cushion and waterproof layer on the soil layer, its characterized in that, energy consumption vibration isolation system still includes the damping bed course, the damping bed course is located between waterproof layer and the anti kickboard, the damping bed course from the top down sets gradually porous concrete layer, bituminous mixture layer, well porous concrete layer, macromolecular compound class layer and porous concrete layer down.

2. The energy-consuming vibration isolation system for a tunnel upper cover building as claimed in claim 1, wherein the upper porous concrete layer, the middle porous concrete layer and the lower porous concrete layer are all of a double-layer structure, and the upper and lower layers are alternately perforated.

3. The energy-dissipating and vibration-isolating system for a tunnel roof building according to claim 1 or 2, wherein the asphalt mixture layer is a rubber particle asphalt mixture layer.

4. The energy dissipating and vibration isolating system for a tunnel roof construction as set forth in claim 1 or 2, wherein said high molecular compound type layer is a micro-porous polyurethane vibration damping material layer.

5. The energy dissipating and vibration isolating system for a tunnel roof building according to claim 1 or 2, wherein the upper porous concrete layer, the middle porous concrete layer and the lower porous concrete layer are polypropylene fiber porous concrete layers.

6. The energy-dissipating and vibration-isolating system for the tunnel roof construction as claimed in claim 1 or 2, wherein a protective layer is provided between the vibration-damping cushion layer and the anti-floating plate.

7. The energy dissipating and vibration isolating system for a tunnel rooftop building according to claim 6, wherein said protective layer is a concrete layer.

8. The energy dissipating and vibration isolating system for a tunnel roof building according to claim 6, wherein a leveling layer and an isolating layer are provided between the lower porous concrete layer and the waterproof layer.

9. The energy dissipating and vibration isolating system for a tunnel ceiling building according to claim 8, wherein the leveling layer is an EPS foam concrete layer and the isolating layer is a plain concrete layer.

10. The energy-consuming vibration isolating system for the tunnel roof building as claimed in claim 8, wherein the thickness of the protective layer is 15mm, the thickness of the damping cushion layer is 120-200mm, the thickness of the leveling layer is 15-20mm, and the thickness of the isolation layer is 10-20mm.