지반-기초 영향을 고려한 교통신호등주의 지진응답 분석
Seismic Response Investigation of Traffic Signal-Supporting Structures Including Soil-Foundation Effects
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
This study analyzes the seismic response of traffic light poles, considering soil-foundation effects through nonlinear static and time history analyses. Two poles are investigated, uni-directional and bi-directional, each with 9 m mast arms. Finite element models incorporate the poles, soil, and concrete foundations for analysis. Results show that the initial stiffness of the traffic light poles decreases by approximately 38% due to soil effects, and the drift ratio at which their nonlinear behavior occurs is 77% of scenarios without considering soil effects. The maximum acceleration response increases by about 82% for uni-directional poles and 73% for bi-directional poles, while displacement response increases by approximately 10% for uni-directional and 16% for bi-directional poles when considering soil-foundation effects. Additionally, increasing ground motion intensity reduces soil restraints, making significant rotational displacement the dominant response mechanism over flexural displacement for the traffic light poles. These findings underscore the importance of considering soil-foundation interactions in analyzing the seismic behavior of traffic light poles and provide valuable insights to enhance their seismic resilience and safety.
Abstract
This study analyzes the seismic response of traffic light poles, considering soil-foundation effects through nonlinear static and time history analyses. Two poles are investigated, uni-directional and bi-directional, each with 9 m mast arms. Finite element models incorporate the poles, soil, and concrete foundations for analysis. Results show that the initial stiffness of the traffic light poles decreases by approximately 38% due to soil effects, and the drift ratio at which their nonlinear behavior occurs is 77% of scenarios without considering soil effects. The maximum acceleration response increases by about 82% for uni-directional poles and 73% for bi-directional poles, while displacement response increases by approximately 10% for uni-directional and 16% for bi-directional poles when considering soil-foundation effects. Additionally, increasing ground motion intensity reduces soil restraints, making significant rotational displacement the dominant response mechanism over flexural displacement for the traffic light poles. These findings underscore the importance of considering soil-foundation interactions in analyzing the seismic behavior of traffic light poles and provide valuable insights to enhance their seismic resilience and safety.
참고문헌 (23)
- Caracogila L, "Numerical and experimental study of vibration mitigation for highway light poles", Engineering Structures, 29(5), pp.821~831 (2007)
- Sherman RJ, "Development of a fatigue design load for high-mast lighting towers", Journal of Structural Engineering, 145(1), pp.4018228~ (2019)
- Magenes L., "Fatigue assessment of high mast illumination polesusing field measurements", Ph.D., Dept. of Civil and Architectural Engineering, pp.2011
- Development of fatigue loading and design methodology for high-mast light poles, "Connor RJ", Transportation Research Board, ~, pp.NCHRP Rep. No. 718 (2012)
- Izuno K, "Dynamic response of highway bridge-lighting pole system for level 1 earthquake", Journal of Applied Mechanics, 11, pp.1039~1046 (2018)
- Salib S, "Dynamic Behaviour and seismic response of FRP light poles in high seismic zones", Corpus ID: 216051321, ~ (2012)
- Siringoringo DM, "Seismic performance evaluation of existing light poles on elevated highway bridges", Sturucture and Infrastructure Engineering, 13(5), pp.649~663 (2020)
- 김태현, "단방향 및 양방향 교통신호등주의 지진응답 분석", 한국지진공학회논문집, 26(6), pp.219~229 (2022), 한국지진공학회
- Korea Road Traffic Facility Industry Cooperative, "Multi-Traffic Signal Structure", ~ (2018)
- Traffic Signal Supporting Structures Stability Assessment, "Seoul Metropolitan Government Transportation Management Division", ~ (2017)
- "ABAQUS Version 6.6 Documentation. ABAQUS", CAE User’s Manual 15.14.1, 2009
- 이은행, "비선형 SSI 해석을 위해 Spring-Damper 에너지 흡수경계조건을 적용한 BRM의 유한요소 모델링 범위에 따른 응답평가", 한국전산구조공학회논문집, 29(6), pp.499~512 (2016), 한국전산구조공학회[DOI]
- Due XI, "A Stress Artificial Boundary in FEA for Near-Field Wave Problem", Chinese Journal of Theoritical and Applied Mechanics, 38(1), pp.49~56 (2006)
- Zhao M, "Explicit Finite Element Artificial Boundary Scheme for Transient Scalar Waves in Two Dimensional Unbounded Waveguide", International Journal for Numerical Methods in Engineering, 11(87), pp.1074~1104 (2011)
- Liu J, "Direct Method for Analysis of Dynamic Soil-Structure Interaction Based on Interface Idea. Developments in Geotechnical Engineering", 261~276 (2006)
- Conniff DE, "Elastoplastic Medium for Foundation Settlements and Monotonic Soil-Structure Interaction under Combined Loadings", International Journal for Numerical and Analytical Methods in Geomechanics, 31(6), pp.789~807 (2007)
- Von EO, "Some Observation on Time Domain and Frequency Domain Boundary Elements", International Journal for Numerical Methods in Engineering, 29, pp.785~800 (2005)
- Korean National Police Agency, "Traffic Signal Installation Manual", ~ (2020)
- Yoshinaka R., "Lateral coefficient of subgrade reaction", Civil Engineering Journal, 10(1), pp.32~37 (1968)
- Dunham JW, "Pile foundation for buildings", Proc. ASCE, Soil Mechanics and Foundations Division, 80(285) (1958)
- 강병주, "표준관입시험 N값을 활용한 지반정수의 경험적 산정", 한국지반환경공학회 논문집, 19(6), pp.5~12 (2018), 한국지반환경공학회[DOI]
- Hooman T, "Three Dimensional Finite Element Modeling of Seismic Soil-Structure Interaction in Soft Soil", Computers and Geotechnics Engineering, 60, pp.9~19 (2014)
- Uesugi M, "Friction Between Dry Sand and Concrete Under Monotonic and Repeated Loading", Japanese Society of Soil Mechanics and Foundation Engineering, 30(1), pp.115~128 (1990)