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Non-linear behaviour of base-isolated building supported on flexible soil under damaging earthquakes

Mahmoud, Sayed LU ; Austrell, Per Erik LU and Jankowski, Robert (2012) 10th International Conference on Fracture and Damage Mechanics (FDM 2011) In Advances in Fracture and Damage Mechanics X 488-489. p.142-145
Abstract
Seismic isolation is a strategy to reduce damage of structures exposed to devastating earthquake excitations. Isolation systems, applied at the base of buildings, lower the fundamental frequency of the structure below the range of dominant frequencies of the ground motion as well as allow to dissipate more energy during structural vibrations. The effectiveness of the base-isolated buildings in damage reduction has been confirmed numerically for the models of structures with fixed supports. The aim of the present paper is to show the results of the non-linear analysis of the response of a base-isolated building supported on soft soil incorporating soil-structure interaction. The detailed study has been conducted for the building equipped... (More)
Seismic isolation is a strategy to reduce damage of structures exposed to devastating earthquake excitations. Isolation systems, applied at the base of buildings, lower the fundamental frequency of the structure below the range of dominant frequencies of the ground motion as well as allow to dissipate more energy during structural vibrations. The effectiveness of the base-isolated buildings in damage reduction has been confirmed numerically for the models of structures with fixed supports. The aim of the present paper is to show the results of the non-linear analysis of the response of a base-isolated building supported on soft soil incorporating soil-structure interaction. The detailed study has been conducted for the building equipped with high damping rubber bearings used as isolation devices. The results of numerical simulations demonstrate that soil flexibility has a significant influence on the behaviour of isolated base of the structure. Considering the flexibility of soil significantly affects the rigid superstructure response lowering its potential to reduce structural damage. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Non-linear analysis, seismic isolation, structural damage, soil-structure interaction, earthquakes
in
Advances in Fracture and Damage Mechanics X
volume
488-489
pages
142 - 145
publisher
Trans Tech Publications Ltd
conference name
10th International Conference on Fracture and Damage Mechanics (FDM 2011)
external identifiers
  • wos:000306531200035
  • scopus:80053943706
ISSN
1013-9826
DOI
10.4028/www.scientific.net/KEM.488-489.142
language
English
LU publication?
yes
id
6b32fd00-9de9-401a-a557-bef1fad4e9b4 (old id 3069094)
date added to LUP
2012-09-27 09:09:28
date last changed
2017-01-01 05:37:36
@inproceedings{6b32fd00-9de9-401a-a557-bef1fad4e9b4,
  abstract     = {Seismic isolation is a strategy to reduce damage of structures exposed to devastating earthquake excitations. Isolation systems, applied at the base of buildings, lower the fundamental frequency of the structure below the range of dominant frequencies of the ground motion as well as allow to dissipate more energy during structural vibrations. The effectiveness of the base-isolated buildings in damage reduction has been confirmed numerically for the models of structures with fixed supports. The aim of the present paper is to show the results of the non-linear analysis of the response of a base-isolated building supported on soft soil incorporating soil-structure interaction. The detailed study has been conducted for the building equipped with high damping rubber bearings used as isolation devices. The results of numerical simulations demonstrate that soil flexibility has a significant influence on the behaviour of isolated base of the structure. Considering the flexibility of soil significantly affects the rigid superstructure response lowering its potential to reduce structural damage.},
  author       = {Mahmoud, Sayed and Austrell, Per Erik and Jankowski, Robert},
  booktitle    = {Advances in Fracture and Damage Mechanics X},
  issn         = {1013-9826},
  keyword      = {Non-linear analysis,seismic isolation,structural damage,soil-structure interaction,earthquakes},
  language     = {eng},
  pages        = {142--145},
  publisher    = {Trans Tech Publications Ltd},
  title        = {Non-linear behaviour of base-isolated building supported on flexible soil under damaging earthquakes},
  url          = {http://dx.doi.org/10.4028/www.scientific.net/KEM.488-489.142},
  volume       = {488-489},
  year         = {2012},
}