Amplification factors for design of nonstructural components considering the near-fault pulse-like ground motions

Abstract

This manuscript investigates the amplification factors for the design of nonstructural components for the near-fault pulse-like ground motions. The amplification factors are computed for the primary structure of three hysteretic models and 81 near-fault pulse-like ground motions. The effects of earthquake magnitude, rupture distance, peak ground velocity (PGV), maximum incremental velocity (MIV), structural degrading behavior, ultimate ductility factor, μu, and damping of nonstructural components, ξc, are evaluated and discussed statistically. The results indicate that the near-fault pulse-like ground motions can significantly increase the amplification factors of nonstructural components with primary structure period. Ground motions with larger earthquake magnitude tend to induce greater amplification factors. The effect of PGV and MIV on amplification factors increase with the increase of primary structure damage. The near-fault pulse-like ground motions are more dangerous to components mounted on structures with strength and stiffness degrading behavior than ordinary ground motions. The damping of nonstructural components influences the amplification factors significantly in the short and fundamental period regions. A new simplified formulation is proposed for the application of the amplification factors for the design of nonstructural components for the near-fault pulse-like ground motions.