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Development of model for comprehensive environmental assessment of bridge vibration induced by traveling vehicles.

Research Project

Project/Area Number 11650476
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 構造工学・地震工学
Research InstitutionIbaraki University

Principal Investigator

YOKOYAMA Koichi  Ibaraki Univ., Fac.of Engineering, Professor, 工学部, 教授 (20302325)

Co-Investigator(Kenkyū-buntansha) OONISHI Hirofumi  Public Works Research Institute, Director of Traffic Environment Division, 土木研究所・環境部, 交通環境研究室長
HARADA Takao  Ibaraki Univ., Fac.of Engineering, Research Associate, 工学部, 助手 (00241745)
WU Zhishen  Ibaraki Univ., Fac.of Engineering, Associate Professor, 工学部, 助教授 (00223438)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥2,900,000 (Direct Cost: ¥2,900,000)
Fiscal Year 2000: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1999: ¥1,800,000 (Direct Cost: ¥1,800,000)
Keywordsinfrasound / bridge vibration / traffic-induced pollution / road bump / environmenrtal assessment model / vibration prediction
Research Abstract

Traveling of vehicles on highway bridges causes bridge vibration. The bridge vibration propagates in the ground through bridge foundation and in the air through bridge superstructure. These ground-bone vibration and air-bone vibration seem to affect sometimes people's life and health. Ground vibration, one of the specific items in the environmental assessment, has prediction method and evaluation method and various kinds of countermeasures have been studied. On the contrary, infrasound that is defined air-bone vibration with 1-80Hz components is not included in the specific items but included in the important items in the assessment in our country at present. Then prediction method and evaluation method of infrasound have not been established.
This study aims to develop a comprehensive model for assessment of bridge vibration caused by traveling of vehicles.
1) Study of characteristics of bridge vibration
Time-series analysis and FFT analysis were conducted using data of bridge vibration, … More ground vibration, infrasound and noise measured at the highway bridges in order to study bridge vibration characteristics, namely the dynamic response of bridge members caused by traveling of vehicles near expansion joint and effects of structural conditions on the spatial distribution of infrasound.
2) Mechanism of generation and propagation of infrasound
Influence of structural conditions was clarified on the bridge vibration induced by traveling of vehicles over bump and amplification characteristics of transfer of bridge vibration into infrasound in frequency domain.
3) A model of assessment of infrasound induced by bridge vibration
It is required for the assessment of infrasound to clarify the generation model of bridge vibration because infrasound is induced by bridge vibration caused by traveling of vehicles. Therefore, precise simulation model of bridge vibration is developed in this study in order to utilize assessment of infrasound. Numerical analysis using this simulation model was conducted to study the effects of structural conditions of bridges and dynamic properties of vehicles on infrasoand. Less

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (3 results)

All Other

All Publications (3 results)

  • [Publications] 横山功一,川崎聖: "弾性支承による交通振動低減可能性"第23回日本道路会議・一般論文集. (B)・6086. 418-419 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yokoyama, K.and Kawasaki, S.: "Feasibility of reduction of traffic-induced bridge vibration by means of elastic shoes'"Proceedings of the 23th Japan Road Conference, Japan Road Association. (B)-6086. 418-419 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 横山功一,川崎 聖: "弾性支承による交通振動低減可能性"第23回日本道路会議・一般論文集 (B). 418-419 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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