吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (01): 86-91.

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Natural vibration and stability of large-span half-through concrete filled steel tubular arch bridge

YUN Di1, LIU He2, ZHANG Su-mei3   

  1. 1. School of Civil Engineering, Jilin Institute of Architecture and Civil Engineering, Changchun 130118, China;
    2. Jilin Vocational Technical College of Agricultural Engineering, Siping 136001, China;
    3. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
  • Received:2012-04-24 Online:2013-01-01 Published:2013-01-01

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Abstract: The natural vibration analysis and the stability analysis were performed for a large-span half-through concrete filled steel tube(CFST) arch bridge. The effects of the design load, rise-to-span ratio and arch surface inclination angle on the natural vibration behavior, the elastic stability and the elastic-plastic stability of the large-span CFST arch bridge were investigated. The results show that reducing the rise-to-span ratio or increase inclination of the arch surface improve effectively the transverse out-of-plane vibration frequencies of the structure, and make the structure stability change in different way. Integrated consideration of the natural vibration and the elastic stability to evaluate the parameter selection of structure is more reasonable than that considering the natural vibration only. For the investigated 360 m span half-through CFST arch bridge, the rise-to-span ratio should be around 1/4, and the arch surface inclination should be less than 10°.

Key words: civil architectural structure, large-span, concrete filled steel tube, arch bridge, natural vibration, stability

CLC Number: 

  • TU378
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