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ZHANG Ning, LIU Yong-jian, LI Hui, Siegfried F STIEMER. Local buckling characteristics of stiffened rectangular plate on elastic foundation subjected to non-uniform loads[J]. Journal of Traffic and Transportation Engineering, 2017, 17(1): 36-44.
Citation: ZHANG Ning, LIU Yong-jian, LI Hui, Siegfried F STIEMER. Local buckling characteristics of stiffened rectangular plate on elastic foundation subjected to non-uniform loads[J]. Journal of Traffic and Transportation Engineering, 2017, 17(1): 36-44.
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Local buckling characteristics of stiffened rectangular plate on elastic foundation subjected to non-uniform loads

  • 1.

    School of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China

  • 2.

    Shaanxi Provincial Major Laboratory for Highway Bridge and Tunnel, Chang'an University, Xi'an 710064, Shaanxi, China

  • 3.

    Department of Civil Engineering, The University of British Columbia, Vancouver V6T 1Z4, Columbia, Canada

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  • Author Bio:

    ZHANGNing(1981-), male, lecturer, PhD, +86-29-82334577, johning@live.cn

  • Received Date: 2016-10-12
  • Publish Date: 2017-02-25
    Abstract
  • Based on the local stability of plate on elastic foundation, the energy method was adopted to deduce the nonlinear characteristic equation of local buckling for stiffened rectangular plate subjected to non-uniform loads.The effects of elastic foundation contact and longitudinal stiffening ribs were considered for plate's buckling analysis by using Galerkin method.The incremental iterative format of nonlinear characteristic equations of local buckling was given.The additional iterative equation of buckling characteristic value was proposed.Analysis result shows that the computational error of buckling coefficient is less than 2%compared with FEM, and the computational efficiency is higher because of avoiding the contact analysis process based on finite element simulation.When the load gradient is 1, the local stability of decentered component withstiffening ribs is greater because its buckling coefficient increases to 51.1that is 2.5times as large as the coefficient of the plate without stiffening ribs.The aspect ratio of buckling wave of stiffening plate is about 0.6, which shows relatively intensive arrangement.While the aspect ratio of buckling wave of non-stiffening plate is about 1.0.On the premise of unconverted sizes of stiffening rib, the optimal location of setting longitudinal stiffening rib is two fifths of plate's width distancing from the edge of plate's pressured side, and the critical buckling coefficient of stiffening plate increases to 78.9that is 4times as large as the value of non-stiffening plate.Because of the application of stiffening rib, the critical breadth-to-thickness ratio of rectangular concrete-filled steel tube increases to 172 that is 2times higher than the standard value.Obviously, when the longitudinal stiffening ribs are set on the wall of rectangular concrete-filled steel tube, the local stability of the wall effectively increases under the action of eccentric load, and the section sizes of rectangular concrete-filled steel tube are improved.

     

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