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Roof cooling tower vibration and noise reduction base and construction method thereof

A technology of vibration reduction and noise reduction and construction method, which is applied in the direction of towers, floors, refrigeration plants, etc., can solve the problems of building noise pollution, work environment interference, and aggravated environmental noise pollution, and achieve the goal of improving stability and bearing capacity Effect

Pending Publication Date: 2019-07-12
SHANGHAI NO 7 CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially for cooling towers installed on the podium or roof of high-rise buildings, the vibration and airflow noise are transmitted through diffusion, which produces strong noise pollution to surrounding buildings, especially through the floor to the lower office area, causing serious damage to the working environment severe disturbance
At the same time, mechanical vibration propagates to the surroundings in the form of low-frequency sound through the installation foundation and surrounding structures, which has certain potential harm to the structure, and radiated secondary solid-state sound will also be generated on the surface of the building structure, thereby aggravating the pollution of environmental noise
[0003] Usually, during the construction process, measures such as mufflers, sound insulation screens, vibration damping pads, and shock absorbers are installed on the cooling tower to reduce the noise transmitted through the air to the surroundings, but they cannot solve the low-frequency vibration noise transmitted through the floor when the cooling tower is running.
Moreover, the existing cooling tower foundation is usually directly arranged on the finished surface of the floor slab. Under the action of vibration load, it is easy to damage the insulation layer, anti-seepage layer and surface layer on the floor slab.

Method used

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  • Roof cooling tower vibration and noise reduction base and construction method thereof
  • Roof cooling tower vibration and noise reduction base and construction method thereof
  • Roof cooling tower vibration and noise reduction base and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] This embodiment provides a roof cooling tower vibration and noise reduction base, combined below Figure 1 to Figure 3 The vibration and noise reduction base of the roof cooling tower will be further explained. The roof cooling tower vibration and noise reduction base includes:

[0033] Several pairs of bottom beams 10 arranged on the floor slab 1, each pair of bottom beams 10 are arranged in parallel and spaced apart, and the bottom beams 10 and the floor slab 1 form an integral structure;

[0034] The base platform 20, the top of each pair of bottom beams 10 is connected by the base platform 20, the side of the base platform 20 is provided with a convex edge 21, and a groove is formed between the convex edges 21, the base platform 20 and the bottom beam 10 form an integrated structure;

[0035] The floating platform 30 is arranged in the groove of the base platform 20, including a force transmission plate 31, and a vibration-isolation and sound-absorbing material 32...

Embodiment 2

[0043] This embodiment provides a construction method for a roof cooling tower vibration and noise reduction base, combined below Figure 1 to Figure 3 The construction method is further introduced. The construction method includes:

[0044] In the construction of the floor slab 1, the bottom beam reinforcement of the vibration and noise reduction base of the roof cooling tower is pre-embedded, so that the bottom beam reinforcement and the floor slab reinforcement form a whole;

[0045] After the floor slab 1 is poured, the concrete at the bottom beam 10 is chiseled, and then the concrete for the bottom beam 10 and the base platform 20 are poured in vertical form, so that the base platform 20, the bottom beam 10 and the floor slab 1 form an integral structure, Wherein, the base platform 20 is provided with edges, and grooves are formed between the edges;

[0046]Lay the vibration-insulating and sound-absorbing material 32 in the groove, and then set the force-transmitting pl...

Embodiment 3

[0052] In a comprehensive commercial office building project, the cooling tower is installed on the roof of the 24th floor of the office tower, and there are 16 square cross-flow cooling towers in total. Due to the lack of good vibration reduction precautions during the installation of the cooling tower, the operating vibration of the fan motor of the cooling tower is transmitted to the building through the equipment foundation, especially on the 23rd floor with significant vibration and severe noise, which seriously affects the work and office. After on-site testing, the noise value of the roof cooling tower reached 65dB(A), and the noise detection value in the office on the 23rd floor reached 52dB(A). The value has exceeded the standard, and the cooling tower needs to be dealt with to reduce vibration and noise. In order to minimize the transmission of cooling tower vibration and noise to the lower roof through the floor, and to avoid the problems of previous vibration reduc...

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Abstract

The invention discloses a roof cooling tower vibration and noise reduction base and a construction method thereof, and belongs to the technical field of equipment vibration and noise reduction. The roof cooling tower vibration and noise reduction base comprises a plurality of pairs of bottom beams arranged on a floor layer plate, a base platform connecting the tops of the pair of bottom beams, a floating paraplatform arranged on the base platform and a spring absorber arranged on the floating paraplatform. Vibrating loads generated when a cooling tower operates are transmitted to the floatingparaplatform through supporting lugs after being weakened by the spring absorber, the vibrating loads are weakened again by vibration isolation acoustic materials, so that low-frequency vibration noise transmitted from the base platform and the bottom beams to the floor layer plate reaches the standard of controlling building environmental noise. In addition, the base platform, the bottom beams and the floor layer plate form an integral structure, vertical loads are effectively prevented from damaging an insulating layer, a seepage-proofing layer and a surface layer on the floor layer plate, and the structural stability and bearing capacity are improved.

Description

technical field [0001] The invention relates to a roof cooling tower vibration and noise reduction base and a construction method thereof, belonging to the technical field of equipment vibration and noise reduction. Background technique [0002] In recent years, with the rapid development of the construction industry, the noise problem of various construction equipment has gradually become prominent. Especially for cooling towers installed on the podium or roof of high-rise buildings, the vibration and airflow noise are transmitted through diffusion, which produces strong noise pollution to surrounding buildings, especially through the floor to the lower office area, causing serious damage to the working environment severe disturbance. At the same time, mechanical vibration propagates to the surroundings in the form of low-frequency sound through the installation foundation and surrounding structures, which has certain potential damage to the structure, and radiated seconda...

Claims

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Application Information

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IPC IPC(8): E04B5/43E04H5/12E04H12/22E04B1/98E04B1/66E04B1/82
CPCE04B5/43E04H5/12E04H12/22E04H12/2292E04B1/98E04B1/66E04B1/82E04B2001/8254
Inventor 黄坤
Owner SHANGHAI NO 7 CONSTR
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