Abstract
Procedures for predicting the response of a steel-frame building subjected to traffic oscillation are investigated. The procedures can be digested as follows : 1) Simultaneous vibration measurement should be performed in (on the ground surface or the basement etc.) and out of (on the sidewalk etc.) a building site where traffic oscillation is likely to affect the habitability of the building. 2) Each time the response becomes remarkably large during the measurement, the conditions (types and speeds of the vehicles, type of die ground, distance between the measurement points etc.) which may characterize the oscillation source and the propagation path are classified. 3) System identification is performed with the largest data that are considered as pseudo-stationary. 4) Identified AR parameters and residual variances are categorized referring to the conditions classified in 2). 5) Operations of 1)〜4) are carried out at various sites in order to acquire statistically determined AR parameters and residual variances. And also phase lags of traffic oscillation within the basements are investigated as well. As a result, the enforced motion input of a building under planning can be estimated from the data measured at out of the site plus the statistical AR parameters, residual variances and phase lags. Then the response of the building may be predicted with the finite element modeling and the estimated input.
