Study of Post-Fire Axial Compressive Behavior of Self-Stress Ceramsite Concrete Filled Steel Tubular Short Columns

Abstract:

The post-fire axial compressive behavior of a set of self-stress lightweight aggregate concrete filled steel tubes (noted as SSLC-ST) after exposure to fire was studied. Effect of the fire temperatures of the specimens and some parameters on the axial compressive behavior of the specimens was especially discussed. The results show that the initial circumferential strain of surface of the steel tubes is much larger than the longitudinal strain of the steel tubes, and the specimens of SSLC-ST have higher post-fire axial compression bearing capacity and better plastic deformation. It was concluded that the local buckling and overall failure of the specimens take place in succession while the specimens are axially loaded, and there are a lot of slip lines with angle of 45^o on surface of the steel tubes.

• Periodical: Advanced Materials Research (Volume 790)
• Pages: 185-188
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.790.185
• Online since: September 2013
• Authors: Jian Qi Lu, Hai Lun Tong, Jin Can Xu, Xin Tang Wang
• Keywords: Axial Compression, Concrete-Filled Steel Tube (CFST), Experiment Study, Post-Fire Behavior, Self-Stress Ceramsite Concrete

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