Estimation of Acceleration Response Spectra of Floor (ARSF)

Abstract eng:
The excitations felt by nonstructural component within a building is due to effects such as the location within the building and the relationship between the building frequency of motion and those of the nonstructural component. Several methods have been used to estimate the effect of earthquake excitations on nonstructural components. Building codes and recommended provisions have included approximate formulas for calculating an effective seismic force for both rigid and flexible acceleration sensitive nonstructural components. The design forces for some flexible acceleration sensitive nonstructural components are based on Acceleration Response Spectra of Floor (ARSF) calculated for each floor of the building, however the calculation of the ARSF is a cumbersome task to be used for most buildings. In this study, ARSF are calculated by Nonlinear Time History Dynamic Analyses (NTHDA) for structural models using recorded ground motions. The results of these analyses are compared to NEHRP Provisions (BSSC 2003) procedure for calculating building floor accelerations.

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