Structural Engineering and Mechanics

  • 제14권3호
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  • Pages.331-343
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  • 2002
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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Ultimate behavior of long-span steel arch bridges

  • Cheng, Jin (Department of Civil Engineering, Tsinghua University) ;
  • Jiang, Jian-Jing (Department of Civil Engineering, Tsinghua University) ;
  • Xiao, Ru-Cheng (Department of Bridge Engineering, Tongji University) ;
  • Xiang, Hai-Fan (Department of Bridge Engineering, Tongji University)
  • 투고 : 2002.01.28
  • 심사 : 2002.07.29
  • 발행 : 2002.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

Because of the increasing span of arch bridges, ultimate capacity analysis recently becomes more focused both on design and construction. This paper investigates the static and ultimate behavior of a long-span steel arch bridge up to failure and evaluates the overall safety of the bridge. The example bridge is a long-span steel arch bridge with a 550 m-long central span under construction in Shanghai, China. This will be the longest central span of any arch bridge in the world. Ultimate behavior of the example bridge is investigated using three methods. Comparisons of the accuracy and reliability of the three methods are given. The effects of material nonlinearity of individual bridge element and distribution pattern of live load and initial lateral deflection of main arch ribs as well as yield stresses of material and changes of temperature on the ultimate load-carrying capacity of the bridge have been studied. The results show that the distribution pattern of live load and yield stresses of material have important effects on bridge behavior. The critical load analyses based on the linear buckling method and geometrically nonlinear buckling method considerably overestimate the load-carrying capacity of the bridge. The ultimate load-carrying capacity analysis and overall safety evaluation of a long-span steel arch bridge should be based on the geometrically and materially nonlinear buckling method. Finally, the in-plane failure mechanism of long-span steel arch bridges is explained by tracing the spread of plastic zones.

키워드

과제정보

연구 과제 주관 기관 : National Nature Science Foundation of China

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피인용 문헌

  1. 장대 아치교 행어 파단에 의한 동적 해석 vol.14, pp.2, 2002, https://doi.org/10.11112/jksmi.2010.14.2.113