Structural behavior of steel beam-column moment connections in fire

摘要

The moment-rotation-temperature relation of semi-rigid beam-column moment connections in high temperature environment is studied. Degradation of steel properties with increasing temperature and the standard temperature-time relation in fire exposure were assumed in accordance with EUROCODE 3 recommendations. The composed beam-column frame is analyzed by the general purpose finite element software ANSYS, and the stiffness-temperature relation of semi-rigid beam-column joint is established. The influence of different boundary conditions for stiffness-temperature relation of steel beam-column joint is studied in the current work.