Bi-linear displacement response spectrum model for engineering applications in low and moderate seismicity regions

Abstract

The second corner period has become a feature in the design response spectrum provisions in some major codes of practices with the general notion that the higher the value of the corner period the higher the design peak displacement demand value. Expressions recommended in the literature for determining the value of the corner period are very diverse. Ambiguities with the definition of the corner period and the manner in which its value is calculated as illustrated in the paper may well be contributors to the diversity. A generalized response spectrum model in the displacement format for providing predictions on rock sites in low and moderate seismic regions is proposed in this paper. The fl..