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Acoustic Reconstruction Method of Inflatable Air Film Pavilion

A technology of air film hall and air film, which is applied in the direction of building structure, building, building type, etc., and can solve the problems of large influence of ambient air, uncertain corrosion, and difficulty in ensuring adsorption stability.

Active Publication Date: 2021-04-09
NANJING PIONE HIGH TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The adhesives and spraying materials used in this method are chemical substances, which have uncertain corrosiveness to the membrane body of the dome pavilion, and have a great impact on the ambient air inside the dome pavilion; the adsorption stability is difficult to guarantee , there is a possibility of falling off after 1 to 1.5 years; when using a liquid covering material, it is seamlessly adsorbed with the air film itself, and the absorption for the high frequency part is acceptable, but it lacks the regulation of the low frequency
[0006] (3) A metal frame of the same volume is welded in the air film by means of an inner skeleton, and sound-absorbing materials are installed on the metal frame. Due to the large volume of the general air film pavilion, the load capacity of the metal frame is required for a large span. At the same time, the construction cost of the metal frame is relatively high. The most important thing is that if the method is changed, the construction significance of the dome pavilion will be lost.

Method used

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  • Acoustic Reconstruction Method of Inflatable Air Film Pavilion
  • Acoustic Reconstruction Method of Inflatable Air Film Pavilion
  • Acoustic Reconstruction Method of Inflatable Air Film Pavilion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In this example, the air dome pavilion of the High School Affiliated to Nanjing Normal University in Nanjing City, Jiangsu Province is selected for acoustic renovation. The air dome pavilion has a length of 80m, a width of 52m, a height of 18.5m, and an area of ​​4160m 2 , the total internal construction area is about 9650m 2 , the total internal volume is about 45000m 3 ;The interior of the air dome pavilion is a curved top structure, and the inner covering material does not absorb sound, and the excessive reflection of the sound causes serious acoustic problems such as sound focusing, reverberation time of about 5s, and obvious echoes; at the same time, the air dome There is 1-1.5m wind load sloshing in the membrane pavilion.

[0030] Such as figure 1 , for this air dome pavilion, the sound reconstruction method is as follows:

[0031] S1. Prepare soft sound-absorbing body 1 and internal riveted fixing components according to the above air dome pavilion. The materi...

Embodiment 2

[0037] On the basis of Embodiment 1, this embodiment provides an assembly method of an internal riveted fixing member, such as figure 2 , install the back panel aluminum alloy frame 2 on the back of the soft sound-absorbing body 1 through rivets, and the rivets are distributed at the four corners of the back panel aluminum alloy frame 2 and the middle of the four frames, and at the same time, the aluminum alloy pads There is a mounting hole in the middle of sheet 4; select 4 ring-shaped nylon ropes 3, which are respectively located at the four corners of the aluminum alloy frame 2 of the back panel, and the bottom end passes through the aluminum alloy frame 2 of the back panel and the soft The gap of the sound-absorbing body 1 forms a nylon rope loop at the bottom, and the top end passes through the nylon rope loop at the bottom and passes through the installation hole upwards, then flips down from both ends of the aluminum alloy spacer 4 and wraps around the middle of the alu...

Embodiment 3

[0039] On the basis of Example 1, this embodiment provides a method for installing the internal riveting fixing member to the interior surface of the dome pavilion, specifically: at the reserved position on the interior surface of the dome pavilion, use sheet-shaped electric heating The air film hole is opened by the soldering iron, the length of the air film hole is 20 mm, the width is 1 mm, and the metal ring 5 is embedded in the air film hole, such as image 3 , the aluminum alloy spacer 4 wrapped with the nylon rope 3 passes through the metal ring 5 and the nylon rope 3 is pulled back to complete the installation. The addition of the metal ring 5 can prevent the soft sound-absorbing body 1 and the aluminum alloy frame 2 of the back panel from being damaged by gravity. Dragging the nylon rope 3 causes the air film hole to expand; the size of the aluminum alloy spacer 4 is selected to be 40mm long and 20mm wide, and the aluminum alloy spacer 4 is inserted into the air film ho...

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Abstract

The invention provides a sound-building and renovation method for an inflatable air-membrane pavilion. The inner riveting-type fixing member is staggered and installed on the interior surface of the air-membrane in a slanted and empty manner. The material is staggered and installed on the interior surface of the air film in a slanted back-air manner to ensure a certain safety space with the inner wall of the air film, which can effectively solve the impact of the air film swaying caused by wind load shaking on the installation of sound-absorbing materials; Effectively increase the contact area between the sound-absorbing material and the space in the air-film pavilion, and at the same time increase the wall cavity, which can effectively control the bass frequency; the installation method is simple and stable, which can realize the coverage installation of selected areas, and freely adjust the installation density, effectively solving the problem. sound focus, etc.

Description

technical field [0001] The invention belongs to the field of acoustic reconstruction, and in particular relates to an acoustic reconstruction method for an inflatable air membrane pavilion. Background technique [0002] Air film building refers to a building structure system that uses special architectural membrane materials as the shell, and is equipped with a set of intelligent electromechanical equipment to provide positive air pressure inside the air film building and support the main body of the building. With the development of architecture, there is a new way of constructing gymnasiums - inflatable air membrane halls. Since the architectural form of the inflatable dome pavilion is a curved vault, the vault structure is prone to sound focusing and sound reflection, and the reverberation time in the venue is very long, generally as long as 5 seconds, which cannot be used for sound reinforcement. Therefore, a second sound reconstruction is required. [0003] At present...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/84E04H15/20E04H15/54
CPCE04B1/8409E04B2001/8263E04H15/20E04H15/54
Inventor 俞金祥
Owner NANJING PIONE HIGH TECH
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