Seismic Behaviour of Steel Moment Resisting Buildings on Soft Soil Considering Soil-Structure Interaction

Far, H; Fatahi, B; Samali, B

Seismic Behaviour of Steel Moment Resisting Buildings on Soft Soil Considering Soil-Structure Interaction

Far, H

Fatahi, B

Samali, B

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Publisher:: Macedonian Association for Earthquake Engineering (MAEE)
Publication Type:: Conference Proceeding
Citation:: Proceeding of the 14 European Conference on Earthquake Engineering 2010, 2010, pp. 1720 - 1727
Issue Date:: 2010-01

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Field	Value	Language
dc.contributor.author	Far, H https://orcid.org/0000-0003-3480-6582	en_US
dc.contributor.author	Fatahi, B https://orcid.org/0000-0002-7920-6946	en_US
dc.contributor.author	Samali, B https://orcid.org/0000-0002-3426-7745	en_US
dc.contributor.editor	Technical Committee	en_US
dc.date	2010-08-30	en_US
dc.date.issued	2010-01	en_US
dc.identifier.citation	Proceeding of the 14 European Conference on Earthquake Engineering 2010, 2010, pp. 1720 - 1727	en_US
dc.identifier.isbn	978-1-61782-708-2	en_US
dc.identifier.uri	http://hdl.handle.net/10453/21970
dc.description.abstract	The 1985 Mexico City and many other recent earthquakes clearly illustrate the importance of local soil properties on the earthquake response of structures. These earthquakes demonstrated that the rock motions could be amplified at the base of the structure. Therefore, there is a strong engineering motivation for a site-dependent dynamic response analysis for many foundations to determine the free-field earthquake motions. The determination of a realistic site-dependent free-field surface motion at the base of the structure can be the most important step in the earthquake resistant design of structures. In this study, the effects of Soil-Structure Interaction on seismic behaviour of steel moment resisting building frames have been studied using Finite Difference Method. Two types of mid-rise structures, including 5 and 15 storey buildings on a soft soil deposit have been selected and analysed under influence of three different earthquake acceleration records. The above mentioned frames been analysed under two different boundary conditions: (i) fixed-base (no soil-structure interaction), and (ii) flexible-base (considering soil-structure interaction). The results of the analyses in terms of structural forces and lateral displacements for the above mentioned boundary conditions have been compared and discussed. It is concluded that the dynamic soil-structure interaction plays a significant role in the seismic behaviour of the mentioned building frames including substantial increment in lateral inter-storey drifts of the structures and changing the performance level of the structures from life safe to near collapse or total collapse. Thus, Considering SSI effects in seismic design of steel moment resisting building frames resting on soft soil deposit is essential.	en_US
dc.publisher	Macedonian Association for Earthquake Engineering (MAEE)	en_US
dc.relation.ispartof	Proceeding of the 14 European Conference on Earthquake Engineering 2010	en_US
dc.relation.ispartof	European Conference on Earthquake Engineering	en_US
dc.title	Seismic Behaviour of Steel Moment Resisting Buildings on Soft Soil Considering Soil-Structure Interaction	en_US
dc.type	Conference Proceeding
utslib.location	Macedonia	en_US
utslib.location.activity	Ohrid, Macedonia	en_US
utslib.for	090504 Earthquake Engineering	en_US
utslib.for	090501 Civil Geotechnical Engineering	en_US
utslib.for	0905 Civil Engineering	en_US
dc.location.activity	Ohrid, Macedonia	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access
pubs.consider-herdc	true	en_US
pubs.place-of-publication	Macedonia	en_US
pubs.publication-status	Published	en_US
pubs.start-date	2010-08-30	en_US

Abstract:

The 1985 Mexico City and many other recent earthquakes clearly illustrate the importance of local soil properties on the earthquake response of structures. These earthquakes demonstrated that the rock motions could be amplified at the base of the structure. Therefore, there is a strong engineering motivation for a site-dependent dynamic response analysis for many foundations to determine the free-field earthquake motions. The determination of a realistic site-dependent free-field surface motion at the base of the structure can be the most important step in the earthquake resistant design of structures. In this study, the effects of Soil-Structure Interaction on seismic behaviour of steel moment resisting building frames have been studied using Finite Difference Method. Two types of mid-rise structures, including 5 and 15 storey buildings on a soft soil deposit have been selected and analysed under influence of three different earthquake acceleration records. The above mentioned frames been analysed under two different boundary conditions: (i) fixed-base (no soil-structure interaction), and (ii) flexible-base (considering soil-structure interaction). The results of the analyses in terms of structural forces and lateral displacements for the above mentioned boundary conditions have been compared and discussed. It is concluded that the dynamic soil-structure interaction plays a significant role in the seismic behaviour of the mentioned building frames including substantial increment in lateral inter-storey drifts of the structures and changing the performance level of the structures from life safe to near collapse or total collapse. Thus, Considering SSI effects in seismic design of steel moment resisting building frames resting on soft soil deposit is essential.

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http://hdl.handle.net/10453/21970