STOCHASTICALLY BASED PREDICTION OF SITE-SPECIFIC SPECTRAL RESPONSE FOR DESIGN

摘要

The influence of local site conditions on the spectral response, as well as its interaction with the other predictor variables is a subject of ongoing research, where the need for incorporating the intensity of input motion in the prediction of site-specific response estimates is particularly emphasized. This study, conceived on a random vibration methodology basis, is a contribution to this research trend. Its global objective is the formulation of a stochastic model for the evaluation of site-specific response estimates in an approximate but acceptable form for practical design purposes, besides the particular objective of examining the simulation capabilities of the proposed model through the comparison with already in use design approaches. Results presented in this paper indicate that the proposed stochastic model can be used for estimating input motion intensity dependent site-specific spectral amplification factors for design purposes and improving site-dependent building-code provisions.