A time-domain seismic SSI analysis method for inelastic bridge structures through the use of a frequency-dependent lumped parameter model
- Submitting institution
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University of Bristol
- Unit of assessment
- 12 - Engineering
- Output identifier
- 93704290
- Type
- D - Journal article
- DOI
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10.1002/eqe.2573
- Title of journal
- Earthquake Engineering and Structural Dynamics
- Article number
- -
- First page
- 2137
- Volume
- 44
- Issue
- 13
- ISSN
- 0098-8847
- Open access status
- Out of scope for open access requirements
- Month of publication
- October
- Year of publication
- 2015
- URL
-
-
- Supplementary information
-
-
- Request cross-referral to
- -
- Output has been delayed by COVID-19
- No
- COVID-19 affected output statement
- -
- Forensic science
- No
- Criminology
- No
- Interdisciplinary
- No
- Number of additional authors
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2
- Research group(s)
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C - Earthquake and Geotechnical Engineering
- Proposed double-weighted
- No
- Reserve for an output with double weighting
- No
- Additional information
- Soil–structure interaction can significantly affect the response of bridges in seismic regions. This is an inherently frequency-dependent effect that has not been able to be accurately captured so far in the framework of probabilistic assessment of bridges in the time domain. This paper presents a formulation, for the first time, that permits the rigorous consideration of frequency-dependence of SSI by means of an optimized reduced-order lumped parameter model. The approach has been implemented into OpenSees, the most widely used US software for earthquake engineering simulations. Interestingly, the method has been extrapolated (2019) to railway-ballast-soil interaction funded by RSSB/Network Rail/HS2 (£300k).
- Author contribution statement
- -
- Non-English
- No
- English abstract
- -