Influence of nonlinear SSI on the seismic response of low-to-mid-rise steel moment resisting frame buildings

The nonlinear behavior of a soil–foundation interface due to mobilization of the ultimate capacity and the consequent energy dissipation may be utilized to alter seismic demands of a structure. However, current design practice does not account for the nonlinear behavior of soil–foundation interface...

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Autores principales:	Mohammad Arbabi, Hossein Tahghighi
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2020
Materias:	earthquake response soil–structure interaction steel mrf nonlinear behaviour hazard levels Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/f940a2f6e2db4c929ba2c4a0dd29107b
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spelling	oai:doaj.org-article:f940a2f6e2db4c929ba2c4a0dd29107b2021-11-08T15:54:03ZInfluence of nonlinear SSI on the seismic response of low-to-mid-rise steel moment resisting frame buildings2476-39772538-261610.22065/jsce.2019.142508.1618https://doaj.org/article/f940a2f6e2db4c929ba2c4a0dd29107b2020-10-01T00:00:00Zhttps://www.jsce.ir/article_81405_5886dcbed5b7131cecd4128e95601f7b.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616The nonlinear behavior of a soil–foundation interface due to mobilization of the ultimate capacity and the consequent energy dissipation may be utilized to alter seismic demands of a structure. However, current design practice does not account for the nonlinear behavior of soil–foundation interface primarily due to the absence of reliable nonlinear soil–structure interaction (SSI) modeling techniques. The objective of this study is to simulate the performance of multi-story building-foundation systems through a Winkler-based approach. Opensees finite element framework is employed for simulation. Four typical 4, 8, 12 and 16-story steel moment resisting frame (MRF) buildings on three hypothetically soft, medium and hard soil sites with shear wave velocities less than 600m/s subjected to actual ground motion records of varied hazard levels are modeled with and without SSI. It is observed that the performance level of models supported by flexible foundation, particularly in an intense earthquake event, may alter significantly in comparison to fixed-base structures. Moreover, for MRFs on soft soil, the nonlinear foundation is found to have a significant effect on the force and displacement demands. This is indicating the necessity for consideration of flexible foundation behavior in the modern design codes in order to accomplish an economic yet safe structural design.Mohammad ArbabiHossein TahghighiIranian Society of Structrual Engineering (ISSE)articleearthquake responsesoil–structure interactionsteel mrfnonlinear behaviourhazard levelsBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 7, Iss شماره ویژه 3, Pp 35-52 (2020)
institution	DOAJ
collection	DOAJ
language	FA
topic	earthquake response soil–structure interaction steel mrf nonlinear behaviour hazard levels Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	earthquake response soil–structure interaction steel mrf nonlinear behaviour hazard levels Bridge engineering TG1-470 Building construction TH1-9745 Mohammad Arbabi Hossein Tahghighi Influence of nonlinear SSI on the seismic response of low-to-mid-rise steel moment resisting frame buildings
description	The nonlinear behavior of a soil–foundation interface due to mobilization of the ultimate capacity and the consequent energy dissipation may be utilized to alter seismic demands of a structure. However, current design practice does not account for the nonlinear behavior of soil–foundation interface primarily due to the absence of reliable nonlinear soil–structure interaction (SSI) modeling techniques. The objective of this study is to simulate the performance of multi-story building-foundation systems through a Winkler-based approach. Opensees finite element framework is employed for simulation. Four typical 4, 8, 12 and 16-story steel moment resisting frame (MRF) buildings on three hypothetically soft, medium and hard soil sites with shear wave velocities less than 600m/s subjected to actual ground motion records of varied hazard levels are modeled with and without SSI. It is observed that the performance level of models supported by flexible foundation, particularly in an intense earthquake event, may alter significantly in comparison to fixed-base structures. Moreover, for MRFs on soft soil, the nonlinear foundation is found to have a significant effect on the force and displacement demands. This is indicating the necessity for consideration of flexible foundation behavior in the modern design codes in order to accomplish an economic yet safe structural design.
format	article
author	Mohammad Arbabi Hossein Tahghighi
author_facet	Mohammad Arbabi Hossein Tahghighi
author_sort	Mohammad Arbabi
title	Influence of nonlinear SSI on the seismic response of low-to-mid-rise steel moment resisting frame buildings
title_short	Influence of nonlinear SSI on the seismic response of low-to-mid-rise steel moment resisting frame buildings
title_full	Influence of nonlinear SSI on the seismic response of low-to-mid-rise steel moment resisting frame buildings
title_fullStr	Influence of nonlinear SSI on the seismic response of low-to-mid-rise steel moment resisting frame buildings
title_full_unstemmed	Influence of nonlinear SSI on the seismic response of low-to-mid-rise steel moment resisting frame buildings
title_sort	influence of nonlinear ssi on the seismic response of low-to-mid-rise steel moment resisting frame buildings
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2020
url	https://doaj.org/article/f940a2f6e2db4c929ba2c4a0dd29107b
work_keys_str_mv	AT mohammadarbabi influenceofnonlinearssiontheseismicresponseoflowtomidrisesteelmomentresistingframebuildings AT hosseintahghighi influenceofnonlinearssiontheseismicresponseoflowtomidrisesteelmomentresistingframebuildings
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Influence of nonlinear SSI on the seismic response of low-to-mid-rise steel moment resisting frame buildings

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