Rocking isolation of nonductile moderately tall buildings subjected to bidirectional near-fault ground motions

作者: Hamid Masaeli , Faramarz Khoshnoudian , Mohammad Hadikhan Tehrani

DOI: 10.1016/J.ENGSTRUCT.2014.08.053

关键词:

摘要: Abstract Recent studies show that slender structures with shallow foundations located on soil medium can benefit from rocking isolation effects during strong earthquakes. In such condition, foundation uplifting and yielding provide supplemental energy dissipation potential at substructure level. As a result, the structural demands would be significantly reduced. this study, building various geometrical properties mounted surface raft are examined. A set of 91 component pairs near-fault forward-directivity ground motions recorded soft as well dense sites selected. Three dimensional nonlinear soil–structure interaction (SSI) including is considered. The results protective play vital role in survival medium-to-high-rise subject to catastrophic earthquakes which excessively greater than design limits. Evidently, has enhanced elastic up 50% for low-aspect-ratio 75% high-aspect-ratio structures. Such beneficial keep superstructure larger safety margins. addition, site seismic structures, liquefaction case buildings investigated.

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