Mechanism of noise generation from a modular expansion joint under vehicle passage

• Ravshanovich, KA

• 山口, 宏樹

• Matsumoto, Y

• Tomida, N

• Uno, S

抄録

type:text

The mechanism for the generation of noise from a modular expansion joint in a bridge under vehicle passage, which can cause an environmental problem, is investigated in experiments on a full-scale model of the joint. Noise and vibration characteristics of the joint model in the near field are identified by a series of car-running experiments associated with separate tests of the acoustic and dynamic characteristics of the joint. A modal analysis based on finite element modelling of the joint is also conducted and structure-borne noise radiation is discussed by correlating the dominant frequency components of the noise with the modal parameters. It is concluded that the noise from the top of the joint, dominant in the frequency range from 500 to 800 Hz, is caused by a sudden change in the pressure of air within the gap formed by the rubber sealing with two adjacent middle beams, and that the noise from the bottom, dominant in the frequency range below 200 Hz, is attributed mainly to sound radiation from the vibration of the middle beams. (C) 2006 Elsevier Ltd. All rights reserved.

identifier:http://www.sciencedirect.com/science/journal/01410296

収録刊行物

• ENGINEERING STRUCTURES

  ENGINEERING STRUCTURES 29 (9), 2206-2218, 2007

  Elsevier B.V.

キーワード

• modular expansion joint
• noise generation mechanism
• car-running experiment
• acoustic test
• impact test
• modal analysis

詳細情報

• CRID: 1050564287771350016
• NII論文ID: 120006385430
• ISSN: 01410296
• Web Site: http://id.nii.ac.jp/1586/00012938/
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
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