Lu, Y., Hajirasouliha, I. orcid.org/0000-0003-2597-8200 and Marshall, A. (2016) Estimation of inelastic displacement demands of flexible-based structures on soft soils. International Journal of Earthquake and Impact Engineering, 1 (1/2). pp. 81-97. ISSN 2397-9372
Abstract
This study aims to develop efficient tools for performance-based seismic design of soil-structure interaction (SSI) systems on soft soils. To simulate the SSI effects, linear and nonlinear ‘equivalent fixed-base single-degree-of-freedom’ (EFSDOF) oscillators as well as a sway-rocking SSI model were adopted. The nonlinear dynamic response of around 10,000 SSI models and EFSDOF oscillators having a wide range of fundamental periods, target ductility demands, and damping ratios were obtained under a total of 20 seismic records on soft soil sites. Based on the results of this study, a practical method is developed for estimating the base shear and maximum displacement demands of a nonlinear single-degree-of-freedom structure on soft soil deposits. In the proposed procedure, the effect of frequency content of ground motions is considered by normalising the period of vibration by the spectral predominant periods, while the nonlinear EFSDOF models are used to improve the computational efficiency.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 Inderscience Enterprises Ltd. |
Keywords: | soil-structure interaction; soft soil; displacement demands; response-history analysis; frequency content |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 03 Nov 2016 08:28 |
Last Modified: | 08 Nov 2016 22:40 |
Published Version: | https://www.doi.org/10.1504/IJEIE.2016.10000963 |
Status: | Published |
Publisher: | Inderscience |
Refereed: | Yes |
Identification Number: | 10.1504/IJEIE.2016.10000963 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:106810 |