EXTENSIONS OF THE N2 METHOD — ASYMMETRIC BUILDINGS, INFILLED FRAMES AND INCREMENTAL N2

摘要

The N2 method is a relatively simple seismic analysis technique based on pushover analysis and inelastic response spectrum approach. Its basic variant is based on a number of assumptions, which impose restrictions to its applicability to general structural systems. Recent research has been aimed to extending the applicability of the method to plan-asymmetric buildings and to infilled reinforced concrete frames. Moreover, the incremental N2 (IN2) method has been developed as a simple alternative to incremental dynamic analysis (IDA). In the paper, the basic N2 method and the three extensions are summarised.