Research of Ductility and Crack of Square Steel Tube Regeneration Block Mixed Short Columns

Abstract:

In order to analyze regeneration block mixed short columns and crack of recycled blocks, to flakiness ratio, mixing ratio, confinement coefficient and there are no ribs for the pilot study on main parameters, on root regeneration of thin-walled square tube 15 blocks of mixed axial compression test of short column. Research results indicates that: Specimen without ribs of ductility coefficient are going with flakiness ratio confinement coefficient of increases and reduces, approximate is linear relationship; and Specimen with rib short column of ductility coefficient are with flakiness ratio and confinement coefficient of increases and first increases then reduces, approximate is parabola relationship; internal concrete of Specimen without ribs of crack distribution concentrated in column Central, and internal concrete of Specimen with ribs of crack distribution along axis to more uniform, with ANSYS established model on internal concrete crack for nonlinear analysis. And experimental waist-shaped crease damaged concrete cracks occurred when parts of development corresponds to the situation.

• Periodical: Advanced Materials Research (Volumes 608-609)
• Pages: 1764-1768
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.608-609.1764
• Online since: December 2012
• Authors: Yue Hong Li, Ping Zhang, Bai Shou Li
• Keywords: Crack, Ductility Factor, Finite Element Method (FEM), Recycled Demolished Concrete Lump, Thin-Walled Square Steel Stub

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