吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (6): 1744-1752.doi: 10.13229/j.cnki.jdxbgxb201706010

• Orginal Article • Previous Articles     Next Articles

Dynamic characteristics of steel-concrete composite simply supported beam under vehicles

WEI Zhi-gang1, 2, SHI Cheng-lin1, 3, LIU Han-bing1, ZHANG Yun-long4   

  1. 1.College of Transportation,Jilin University,Changchun 130022, China;
    2.Jilin Provincial High Class Highway Construction Bureau, Changchun 130033, China;
    3.Scientific Research and Development Center, Jilin Provincial Transport Scientific Research Institute, Changchun 130012, China;
    4.School of Transportation Science & Engineering, Jilin Jianzhu University, Changchun 130118, China
  • Received:2017-01-05 Online:2017-11-20 Published:2017-11-20

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Abstract: In this paper, first, the stiffness distribution function of steel-concrete composite beam under vehicles is derived, in which the effect of share slip of the composite beam is considered. Then, the undetermined coefficients are used to express the vibration functions of the composite beam and the vehicles. Further, based on the matrix transfer method, the vibration equation of the vehicle-beam vibration system expressed by the undetermined coefficients is established using the deformation compatibility and the force equilibrium condition. The natural frequencies and mode shapes of the steel-concrete simply supported beam under vehicles can be calculated by this vibration equation. Finally, the validity and reliability of the presented method are verified by finite element method.

Key words: bridge engineering, dynamic characteristics, steel-concrete composite beam, shear slip

CLC Number: 

  • TU311
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