Approximation procedure for determining oscillation period of frame structures

U radu su prikazane neke od približnih metoda za određivanje formi i perioda osciliranja okvirnih konstrukcija. Razmatrana je i predložena približna metoda pri čemu se u proračun ulazi sa približno određenim relativnim krutostima katova i prizemlja. Odstupanja rezultata dobivenih predloženim približnim postupkom od onih dobivenih točnijim proračunima maloga su reda veličina. Stoga je istaknuto da se metoda može rabiti u praksi i za kontrolu proračuna složenih sustava računalom.Some approximate methods for determining the forms and periods of oscillation for frame structures are presented in the paper. An approximation method, based on approximate relative stiffnesses of the storeys and the ground floor, is analyzed and proposed. The results obtained by the proposed approximate procedure do not greatly deviate from those obtained by more accurate calculations. It is therefore emphasized that the method can be used both in practice and for checking computer-based analysis of complex systems