ZHOU Wang-bao, JIANG Li-zhong, LI Fang-fang, HUANG Zhi. Experiment of seismic performance for steel-concrete composite box-beam[J]. Journal of Traffic and Transportation Engineering, 2014, 14(6): 1-9.
Citation: ZHOU Wang-bao, JIANG Li-zhong, LI Fang-fang, HUANG Zhi. Experiment of seismic performance for steel-concrete composite box-beam[J]. Journal of Traffic and Transportation Engineering, 2014, 14(6): 1-9.

Experiment of seismic performance for steel-concrete composite box-beam

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  • Author Bio:

    ZHOU Wang-bao (1982-), male, lecturer, PhD, +86-27-87651786, zhwb@whut.edu.cn

  • Received Date: 2014-06-26
  • Publish Date: 2014-12-25
  • Four steel-concrete composite box-beams (SCCBBs) with different shear connection degrees and height-width ratios of web were experimentally studied under low-cyclic reversed loading.The seismic performances, such as failure mode, hysteretic behavior, skeleton curve, energy-dissipating capacity, ductility, and rigidity degeneration rule, were deeply studied.The influences of shear connection degree and height-width ratio of web on the seismic performance were mainly analyzed.Study result shows that according to different shear connection degrees and height-width ratios of web, there are four types of failure modes, which are local buckling failure, bending-cutting failure, compressing-bending failure, and shear failure.Load-deflection hysteretic curve and skeleton curve can be divided into three stages that are elasticity, elastoplasticity, and failure.Load-deflection hysteretic loops, with different shear connection degrees and height-width ratios of web, are plump and do not have obvious rheostriction, which shows that SCCBB has good seismic performances.Skeleton curve becomes plumper and energy-dissipating capacity becomes higher when shear connection degree increases, but the change of ductility is not obvious.Ductility becomes better and energy-dissipating capacity bocomes higher when the height-width ratio of web increases.The influences of shear connection degree and height-width ratio of web on rigidity degeneration are greater at earlier stage and less at later stage.

     

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