• ISSN 0258-2724
  • CN 51-1277/U
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Volume 27 Issue 1
Jan.  2014
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Journal of Southwest Jiaotong University  > 2014  >  27(1): 72-78.
CAO Lilin, SHI Qiyin, WANG Zhen, GE Yitao, LI Aiqun. Bending Performances of High-Strength Steel-Encased Composite Beams[J]. Journal of Southwest Jiaotong University, 2014, 27(1): 72-78. doi: 10.3969/j.issn.0258-2724.2014.01.012
Citation: CAO Lilin, SHI Qiyin, WANG Zhen, GE Yitao, LI Aiqun. Bending Performances of High-Strength Steel-Encased Composite Beams[J]. Journal of Southwest Jiaotong University, 2014, 27(1): 72-78. doi: 10.3969/j.issn.0258-2724.2014.01.012
shu

Bending Performances of High-Strength Steel-Encased Composite Beams

doi: 10.3969/j.issn.0258-2724.2014.01.012
  • Received Date: 15 Jan 2013
  • Publish Date: 25 Jan 2014
    Abstract
  • In order to investigate the bending behavior of high-strength steel-encased composite beams under static load, bending performances of three simply-supported beam specimens with full-interaction and different strengths of steel and concrete were investigated experimentally. The load-defection relationship, strain distribution, steel-concrete interface slippage, crack development and failure mode of these beams were discussed. Based on the test results, the calculation formulas of normal section bearing capacity of high-strength steel-encased composite beam were presented. The research results show that compared with an ordinary composite beam, the bending capacity of a high-strength steel-encased composite beams under static load increases by over 60%, and the displacement ductility coefficients for the three beams are 2.16, 2.76 and 2.34, respectively, indicating that a high strength steel-encased composite beam has a good bending performance.

     

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