On the dynamic properties of structural frames

Some authors have developed simplified analytical ex5)ressions for approximating natural frequencies of framed structures. Others have proposed empirical formulae based on observational data for the vibrational behaviour of actual buildings. Generally these are subject to certain limitations regarding possible variations in frame properties. In this thesis an attempt is made to provide an approximate method of analysis, based on a realistic mathematical model (but assuming elastic behaviour), and taJfeing into account the effects of significant individual parameters.