Joint research and development of "soundproof structure of bridge expansion device"
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- Joint research and development of "soundproof structure of bridge expansion device"
We jointly developed a soundproof structure with Shizushina Co., Ltd. to suppress the noise generated from the lower part of the bridge expansion and contraction device.
[2010 JSCE Environmental Award]
Overview
Proposed company name
Shizuka Co., Ltd.
Proposal Date to TI Network
March, 2007
Joint research and development period
November 2007-March 2008
Contents of joint research and development
Structural features
This is a sound absorption type panel installed under the bridge expansion and contraction device, which is the source of noise. This panel is 8kg / m 2 It is lightweight and has a structure that is divided into two parts on the left and right, so panel installation work is easy. In addition, since the lower part of the structure opens and closes, you can easily check the status of the telescopic device during inspection.
Local adoption status
It was installed at 4 locations of Kan-Etsu Expressway and Yokohama Yokosuka Road.
From the noise test conducted so far and on-site trial results, we have confirmed a noise reduction effect of about 10 db (A) or more for sudden noise compared to before measures.