ANALYSIS ON DYNAMIC CHARACTERISTICS AND SEISMIC BEHAVIOR OF CENTRICALLY BRACED STEEL FRAME

In order to analyze dynamic characteristics of steel frames with different pattern of braces, three structures with X braces, V braces and inverted V braces were designed utilizing PKPM software. Finite element analyses on these structures were carried out by using ANSYS and SAP2000 to investigate the effects of brace pattern on structural stiffness. Then, time history analysis using El-Centro wave and SHW2 wave were performed. Results show that V braces and inverted V braces are close in improving dynamic characteristics of structures and more effective than X braces.