Investigation on Postfire Residual Capacity of High-Strength Steel Columns with Axial Restraint

Study on the Bending–Shear Properties of Concrete-Filled Circular Carbon Fibre Reinforced Plastic Steel Tubes

“…Yu et al [ 12 ] analyzed existing experimental data and proposed a calculation expression for the bearing capacity of FRP concrete-filled steel tubes. Research has found that the mechanical characteristics of FRP concrete-filled steel tubes mainly depend on the equivalent constraint coefficient before FRP failure [ 13 ]. Tao et al [ 14 ] conducted experiments on the bending performance of CFRP-reinforced, concrete-filled steel tubes after a fire; the experimental results indicated that the repair effect of CFRP on flexural specimens is not as good as that on axially compressed short columns, perhaps due to the absence of longitudinal CFRP.…”

Experimental and numerical investigation of S700 high strength steel CHS beam–columns after exposure to fire

“…The global buckling behaviour of S460 high strength steel welded I-section columns in fire was experimentally and numerically studied by Wang et al [22], with the key influencing factors, including the applied load ratio, axial and rotational restraints and member slenderness ratio, evaluated and verified. Wang and Liu [23] and Li et al [24] conducted experimental and numerical investigations into the flexural buckling behaviour of high strength steel box and Isection columns after exposure to fire and proposed design methods to predict their residual compression capacities. Complementing the existing research on the fire and post-fire performance of high strength steel structures, as well as the studies into the room temperature response of high strength steel circular hollow section (CHS) beam-columns [25,26], the present study focuses on the global buckling behaviour of S700 high strength steel CHS beamcolumns after exposure to fire.…”