Review of Displacement-Based Seismic Design of Structures by M. J. N. Priestley, G. M. Calvi, and M. J. KowalskyDisplacement-Based Seismic Design of StructuresIUSS Press

Abstract

This book addresses the development and application of the direct displacement-based seismic design procedure to a variety of structural systems. The central concept developed in this book is that the seismic design of a structure is based on a specified target displacement for a given seismic hazard level. For this purpose, the structural response is modeled by a secant elastic lateral stiffness and an equivalent viscous damping representative of the global behavior of the actual nonlinear structure at the target displacement. The secant stiffness and damping values developed for each structural system were calibrated by the authors on the basis of the results of inelastic time-history dynamic analyses. The direct displacement-based seismic design procedure treated in this book offers a number of advantages over the traditional force-based seismic design procedure currently implemented in seismic provisions around the world: 1 no estimation of the elastic period of the structural system is required; 2 subjectively attributed force reduction factors do not enter the design process; and 3 displacements that have been observed to be the main parameter affecting structural damage in actual earthquakes drive the design process. The direct-displacement seismic design strategy, on the other hand, requires detailed knowledge of the variations of the equivalent secant stiffness and viscous damping of the structural system with displacement amplitude. To date, this information was not well established for many structural systems, and the elaboration of the direct displacement-based concepts into a simple and robust seismic design procedure had not been established. On the basis of research conducted by the authors over the past 15 years, this book fills this important gap in knowledge. The book is divided into four main sections. The first section includes the first two introductory chapters, which discuss conceptual problems with the current force-based seismic design procedure and the seismic input required for displacement-based design. The second section of the book includes two chapters that lay down the theoretical foundations leading to the elaboration of the