An Investigation on the Seismic Behavior of Braced Steel Frames under Vertical Component of Ground Motion

In this research the effect of combined horizontal and vertical component of earthquakes on the seismic behavior of braced steel frames was investigated.Seismic behavior has been verified by conductionnonlinear dynamic analysis under the vertical and horizontal earthquakes and horizontal component alone. Three structures with 4, 8 and 12 stories representing low, medium and high braced steel structures selected. The analysis subjected to 3 strong motion records. Results from the analytical study indicatedthat the inclusion of the vertical component has greatly influence the axial forces in the columns but little effect on the shears and bending moment in the beam

Keywords:

Braced Frame , Vertical and Horizontal Accelerations , Nonlinear Analysis , Seismic Behavior