APPROXIMATE METHODS FOR NONLINEAR SEISMIC ANALYSIS OF BUILDING STRUCTURES

In the paper approximate methods for nonlinear seismic analysis of building structures are discussed. The basic features of the methods are: the use of two separate mathematical models, the nonlinear static (pushover) analysis, and the application of the response spectrum approach. Special attention is given to the latest version of the N۲ method which is formulated in the capacity spectrum method format. The application of the method is illustrated by two examples.