Structural Monitoring and Maintenance

  • 제2권1호
  • /
  • Pages.65-75
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  • 2015
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  • 2288-6605(pISSN)
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  • 2288-6613(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Impact effect analysis for hangers of half-through arch bridge by vehicle-bridge coupling

  • Shao, Yuan (Road and Bridge Engineering Institute, Dalian Maritime University) ;
  • Sun, Zong-Guang (Road and Bridge Engineering Institute, Dalian Maritime University) ;
  • Chen, Yi-Fei (Road and Bridge Engineering Institute, Dalian Maritime University) ;
  • Li, Huan-Lan (Road and Bridge Engineering Institute, Dalian Maritime University)
  • 투고 : 2015.01.18
  • 심사 : 2015.03.07
  • 발행 : 2015.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

Among the destruction instances of half-through arch bridges, the shorter hangers are more likely to be ruined. For a thorough investigation of the hanger system durability, we have studied vehicle impact effect on hangers with vehicle-bridge coupling method for a half-through concrete-filled-steel-tube arch bridge. A numerical method has been applied to simulate the variation of dynamic internal force (stress) in hangers under different vehicle speeds and road surface roughness. The characteristics and differences in impact effect among hangers with different length (position) are compared. The impact effect is further analyzed comprehensively based on the vehicle speed distribution model. Our results show that the dynamic internal force induced by moving vehicles inside the shorter hangers is significantly greater than that inside the longer ones. The largest difference of dynamic internal force among the hangers could be as high as 28%. Our results well explained a common phenomenon in several hanger damage accidents occurred in China. This work forms a basis for hanger system's fatigue analysis and service life evaluation. It also provides a reference to the design, management, maintenance, monitoring, and evaluation for this kind of bridge.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation

참고문헌

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피인용 문헌

  1. Transverse Dynamic Mechanical Behavior of Hangers in the Rigid Tied-Arch Bridge under Train Loads vol.31, pp.1, 2017, https://doi.org/10.1061/(ASCE)CF.1943-5509.0000932
  2. Fatigue Behavior Evaluation of Full-Field Hangers in a Rigid Tied Arch High-Speed Railway Bridge: Case Study vol.23, pp.5, 2018, https://doi.org/10.1061/(ASCE)BE.1943-5592.0001235
  3. RETRACTED: Fatigue reliability assessment for hangers of a special-shaped CFST arch bridge vol.28, pp.None, 2015, https://doi.org/10.1016/j.istruc.2020.08.067