STUDY ON ESTIMATION OF STRUCTURAL PARAMETERS OF BASE-ISOLATED HIGH-RISE BUILDINGS BY MEANS OF STOCHASTIC THEORY

Examination for earthquake and across-wind excitation

Abstract

This paper describes that the probabilities of exceedance is so effective to estimate safe and secure structural parameters under considering the incompatibility between the seismic performance and the wind-resistance performance. In this paper, a technique, which estimate the comprehensive safety for the earthquake loading and the wind loading based on the concept of probability, is indicated. It is tried that the structural parameters of base-isolated high-rise buildings are estimated by means of this technique. From the results, it is confirmed by estimating the probabilities of exceedance that the seismic performance and the wind-resistance performance have the incompatibility. It is also confirmed that the displacement in the base-isolator and the shear force in the first story have the incompatibility. The possibility to estimate safe and secure structural parameters for the design criteria based on the probability concept is indicated.