Fire Resistance and Seismic Performance Study of a High-Strength Construction Steel Using Creep and Internal Friction Analysis

Fire resistance and seismic performance are the two of most important considerations for design construction steel. The fire high-strength steel, Q460FRE, which contains low Mo, was investigated by means creep test under different experiment conditions. Then, Q460FRE after being subjected to various temperatures, characterized internal friction analysis. steel exhibited excellent resistance, yield strength at 600 °C 67.4% room temperature. constitutive equation stress fracture time established. bearing tensile should be lower than 337 MPa ensure least 1 h evacuate from fire. alternating temperature significantly affected serration behavior strain. analysis indicated that decreased with increase in temperature, consistent results ratio.