Finite Element Analysis of Seismic Performance of Cold-formed Steel Beam-column Joints

摘要

In this paper, a cubic type curve approximate hysteretic model for steel bridge pier is proposed. Simple equation curves are used to express restoring force-displacement relation of steel piers. The hysteretic rules introduced in this model are established based on the hysteretic characteristics not only observed from quasi-static tests in past,but al so based on conducted hybrid tests in this study. A series of quasi-static tests and hybrid tests are conducted using 3 types of specimens and 6 accelerograms of strong ground motions. By comparing the results of tests and the simula tion, it has been testified that this cubic curve type model can simulate the inelastic hysteresis behavior and earth quake response of steel piers in high precise, even in large displacement range where the piers experience local buck ling near to collapse.