Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Investigation of Seismic Responses of Single- and Bi-Directional Traffic Light Poles

단방향 및 양방향 교통신호등주의 지진응답 분석

  • Kim, Taehyeon (Department of Civil Engineering, Jeonbuk National University) ;
  • Hong, Sanghyun (R&D Department, SD E&C Co. Ltd.) ;
  • Oh, Jongwon (Civil Engineering Division, Lotte E&C) ;
  • Roh, Hwasung (Department of Civil Engineering and Research Institute for Disaster Prevention, Jeonbuk National University)
  • 김태현 (전북대학교 토목공학과) ;
  • 홍상현 (에스디이엔씨(주) 연구개발전담부서) ;
  • 오종원 (롯데건설 토목사업본부) ;
  • 노화성 (전북대학교 토목공학과 및 방재연구센터)
  • Received : 2022.08.23
  • Accepted : 2022.08.29
  • Published : 2022.11.01
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Abstract

The seismic responses of traffic light poles are investigated using a finite element analysis. Among the traffic light poles, single- and bi-directional traffic light poles are considered since such poles are frequently installed on vehicle roads. For a more detailed investigation, three different lengths of the mast arm are considered for each directional pole. For a time-history analysis, six actual and two artificial earthquakes are considered and applied to each direction of the poles (x and y) to investigate which direction input provides more significant responses due to the unsymmetrical structural shape. Herein, the x and y directions are respectively parallel and perpendicular based on the single mast pole case. From the analysis results, the average maximum displacement response is developed with the x-direction input case for both types of light poles. Also, the bi-directional traffic light poles show a 13% larger response than the single-directional traffic light poles. Even though the y-direction input case produces a smaller response, the response difference between the single- and bi-directional light poles considerably increases by about 60%. The average maximum acceleration responses are almost similar for both types of light poles.

Keywords

Acknowledgement

본 연구는 한국연구재단 이공분야기초연구사업의 기본연구(No. 2018R1D1A1B07048759) 지원으로 진행되었으며 이에 감사드립니다.

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