Method for constructing curved roof of integral semi-anechoic room of automobile noise laboratory
A technology of automobile noise and semi-anechoic chamber, which is applied in the processing of building materials, construction, building construction, etc., to achieve good noise reduction effect, low construction cost and meet the requirements
Active Publication Date: 2013-01-30
CHINA CONSTR SIXTH ENG DIV CORP +1
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Problems solved by technology
These two patents have novel design, simple structure, low construction cost, good noise reduction and vibration isolation effects, but these two patents (1~2) are applicable to the construction method of full anechoic chambers, not semi-anechoic chambers. Chamber Construction Practices
Method used
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Embodiment 1
[0031](1) install the four-wall frame column reinforcement of the automobile noise test room and pour the frame column concrete; (2) install the four-wall frame column reinforcement of the compartment in the automobile noise test room and pour the frame column concrete to build the compartment; (3) Install the roof portal steel structure in the compartment; (4) install the shear wall four-wall reinforcement of the semi-anechoic chamber of the vehicle in the roof portal steel structure and carry out the shear wall concrete pouring, the whole The four walls of the shear wall of the car semi-anechoic chamber are integrated with the inner wall of the roof portal steel structure; (5) the arc-shaped roof concrete roof of the semi-anechoic chamber of the vehicle is installed on the top surface of the four walls of the shear wall Formwork and steel bars of the shell and concrete pouring of the concrete roof shell so that the arc-shaped roof concrete roof shell and the roof portal steel...
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The invention discloses a method for constructing a curved roof of an integral semi-anechoic room of an automobile noise laboratory. The method comprises the following steps of: installing four-wall frame column reinforcing bars of the automobile noise laboratory and casting frame column concrete; building compartments and installing a roof door type steel structure; performing concrete casting of a shear wall; performing concrete casting of a concrete top plate shell; erecting an overhead assembled grid frame on a four-wall top surface frame of the automobile noise laboratory; installing circular arc roof metal wedges on inner walls and top walls at four sides of the integral semi-anechoic room, and installing a wedge door on one side wall of the shear wall of the integral semi-anechoic room; and installing a mineral wool plaster slab suspended ceiling and a space board on the tops of the compartments from bottom to top in sequence. The method disclosed by the invention has the advantages of low construction cost, and good noise reduction and vibration isolation effects.
Description
technical field [0001] The invention relates to a roof construction method, in particular to a construction method for an arc-shaped roof of a semi-anechoic chamber of a vehicle noise laboratory. Background technique [0002] The main function of the anechoic chamber is to provide a free-field or semi-free-field space for acoustic testing. Free field means that when sound waves propagate in infinite space, there are no reflectors or reflective surfaces. The free-field space in nature is to hang the sound source in the air, away from any reflectors, and the sound waves can freely propagate to a 360° omnidirectional angle. Semi-free field space means that there is a total reflection surface in free space, and sound waves can only propagate freely in the 180° hemispherical orientation. [0003] An anechoic chamber (or semi-anechoic chamber) is an extremely important experimental place in acoustic experiments and noise tests. Its role is to provide a low-noise test environmen...
Claims
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IPC IPC(8): E04G21/00
Inventor 张成才王存贵王文彪王丽梅刘亚雷张子文凡春
Owner CHINA CONSTR SIXTH ENG DIV CORP