Performance of Isolated Buildings During Near-Fault Ground Motion Type Pulses

Abstract eng:
This paper explores the performance of isolated buildings under near­fault motions by applying a simulated near­fault motion model and a number of recorded near­fault motions. By means of spectra, the effects of such factors as pulse periods of near­fault motions and fault distances on isolated buildings are analyzed, and a comparison with far­field motions is made to analyze the changes of isolated building displacements and the accelerations of superstructures. What’s more, the influences of damping ratios of isolated buildings on cushioning effects are discussed. The results suggest that long period near­fault motions can increase the isolated building displacements significantly, while the acceleration responses increase slightly, and damping can reduce the isolated building responses under near­fault motions effectively.

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