Abstract
Four full-scale SRC columns with special-shaped cross section were experimentally investigated in fire following ISO834 standard heating process and were implemented in the compression test after fire .The section temperature field after two hours of fire, deformation laws under fire and the mechanical behaviors after fire were got. Find: (1) Bond slips between concrete and steel were small which indicates that concrete and steel can work together. (2) Reasonable way with steel cross-section had a significant effect on the mechanical properties of columns. (3) The two sides of SRC special-shaped column were under fire conditions, sections were damaged. When the load was at the centre of the cross section, columns were in the state of axial compression before fire and the state of eccentric compression after fire.
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