吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (3): 789-795.doi: 10.13229/j.cnki.jdxbgxb201703014

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Static and dynamic responses of steel-concrete composite beams

ZHANG Yun-long1, LIU Zhan-ying2, WU Chun-li3, WANG Jing1   

  1. 1.School of Transportation Science & Engineering, Jilin Jianzhu University, Changchun 130118, China;
    2.School of Transportation, Changchun Architecture and Civil Engineering College, Changchun 130607, China;
    3.College of Transportation,Jilin University, Changchun 130022, China
  • Online:2017-05-20 Published:2017-05-20

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Abstract: In order to accurately analyze the static and dynamic responses of steel-concrete composite beams, the reasonable element displacement function of the composite beam is derived based on the contact theory and finite element method. The stiffness equation of the composite beam element considering shear slip effect is deduced. Combined with classical dynamics theory, a method of calculating the natural frequencies and vibration mode of the composite beams without damping is established with consideration of the shear slip effect at the interface. As a case study, the deflection of a simply supported steel-composite beam under vertical load and distributed shear slip strain difference along the beam is analyzed. Results show that the finite element solution is in good agreement with the experiment results. Using stiffness matrix the natural frequencies and vibration modes of the beam considering the shear slip effect are calculated and compared with complete interaction results, which suggest that the effect of shear slip effect should be considered in dynamic response calculation. This study provides a reliable calculation method for practical engineering design.

Key words: bridge engineering, composite beam, contact theory, finite element method, dynamic response

CLC Number: 

  • TU311.1
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