ESTIMATION OF AMPLIFICATION FACTOR IN EARTHQUAKE ENGINEERING

Abstract

The authors are the developers of Odyssey Software (Eurosoft Co.) for the analysis of seismological data and computing of seismic loads and their parameters. While communicating with the users of the software, the authors have revealed some uncertainty about both understanding of the term "amplification factor (AF)" and calculation of the amplification factor using various methods. In this article, a simple example shows that the determination of the amplification factor as the ratio of the acceleration’s spectrum to the maximal acceleration is derived from the classical definition of AF in the form of the ratio of maximal dynamic displacement to the displacement by the action of static load. Deterministic and probabilistic ap-proaches for the calculating of the AF were discussed. There was an example of AFs calculation and their envelopes for translational and rotational components of seismic impact by using Odyssey Software.

Keywords

• relativistic theory of gravitation
• rest mass
• graviton
• gravitational field
• Universe evolution
• expansion acceleration
• space tensor