SEISMIC RESISTANCE INVESTIGATION OF A LARGE-PANEL BUILDING WITH SUPER-WIDE WALL SPACING

Abstract

The problem of earthquake prediction and its effectiveness is discussed. The analysis of the situation with the implementation of the medium-term forecast of devastating earthquake April 25, 2002, Tbilisi, Georgia was held. Engineering-geological, geomorphological and hydrogeological conditions of Tbilisi are reviewed. 5-point forshock and 7-point main shock isoseists are shown. This article discusses a number of devastating earthquakes records, which source was close to the urbanized territory. The analysis of instrumental records was held. It is shown that the near-source zone urbanized territory determines the availability of high-frequency vertical component, anticipating major fluctuations. It is well known that absorption of seismic waves is directly proportional to the frequency of the oscillations, which involves rapid attenuation of signal high-frequency component. Thus, with few exceptions, most of the records produced by stations, quite remote from the scene. Traditional use of inertial seismic detectors excludes the registration of these high frequency signals. Earthquakes are located directly beneath the territory of Tbilisi so the use of appropriate records should enable to receive buildings and structures reactions to such impact closest to real conditions. In this context, we investigated the efficacy of residential design concept with super-wide wall spacing on the example of 5-storeyed large-panel building. Dynamic calculation using finite element was produced.