REPRESENTATIVE SET OF EARTHQUAKE ACCELEROGRAMMS FOR STRUCTURAL ENGINEERING OF BUILDINGS AND STRUCTURES DURING EARTHQUAKE EFFECTS

In the process of structural engineering of buildings and structures with the use of direct dynamic methods the accelerogramms of earthquakes with the parameters corresponding to a specific construction site are required. Such accelerogramms could be obtained by various methods. For example, they could be produced by seismologists. However, for a structural engineer it could be required to get them processed (balancing, segregation of separate phase of impact, etc.), that is not always convenient to do. Moreover, an accelerogramm with slightly different spectral composition and lifespan, nevertheless applicable to a given construction site, could be required. Also an accelerogramm could be generated with the use of specially designed software. Although it’s not always convenient as it requires certain amount of time and could cause some difficulties during formation of original data for generation and also for obtaining correct results. In order to overcome the above-mentioned difficulties the authors proposed the representative set of synthesized earthquake accelerogramms which could be applied for various combinations of seismic properties of construction sites. The present article sets outs the principal approaches to formation of the set of earthquake accelerogramms, designated for design of buildings and structures in terms of earthquake effects. Purpose requirements to discrete accelerogramms and to the set as a whole have been disclosed, purpose characteristics of accelerogramms have been set out, clarifications and recommendations for application of the representative set of accelerogramms in practical calculations have been enclosed.