• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Bridge natural frequency estimation by extracting the common vibration components from vehicles

Research Project

Project/Area Number 25630193
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Structural engineering/Earthquake engineering/Maintenance management engineering
Research InstitutionThe University of Tokyo

Principal Investigator

NAGAYAMA tomonori  東京大学, 工学(系)研究科(研究院), 准教授 (80451798)

Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords橋梁固有振動数 / 同期計測 / 車両 / 加速度 / GPS / 橋梁振動 / 固有振動数 / 車両応答 / クロススペクトル / 時刻同期 / 維持管理工学 / モニタリング
Outline of Final Research Achievements

Understanding on the actual behavior and the performance of bridges are expected to improve the safety and reduce the construction/management cost by eliminating uncertainty in the design and management process. Bridge natural frequencies have been widely used in understanding the dynamic behavior of bridges. However, identification of natural frequencies of numerous bridges require time and cost; such a fundamental property as natural frequency has not been acquired for the majority of bridges. In this research, multiple vehicles are installed with accelerometers and GPS so that the vehicles' dynamic motions are captured in a synchronous manner. Common vibration components are extracted to identify the natural frequencies of bridges. The identification capability has been demonstrated on a steel girder bridge.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (2 results)

All 2015 Other

All Presentation (1 results) Remarks (1 results)

  • [Presentation] Bridge Natural frequency estimation by extracting the common vibration component from the responses of two vehicles2015

    • Author(s)
      長山智則
    • Organizer
      土木学会 第70回年次学術講演会実施要領
    • Place of Presentation
      岡山大学,岡山県
    • Year and Date
      2015-09-16 – 2015-09-18
    • Related Report
      2014 Annual Research Report
  • [Remarks] 道路性状の簡易評価システム

    • URL

      http://vims.sakura.ne.jp

    • Related Report
      2013 Research-status Report

URL: 

Published: 2014-07-25   Modified: 2019-07-29  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi