Imperial College London
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DrStavroulaKontoe

Faculty of Engineering, Department of Civil and Environmental Engineering

Visiting Reader
 
 
 
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Contact

 

+44 (0)20 7594 5996stavroula.kontoe Website

 
 
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Location

 

535Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Tsaparli:2017,
author = {Tsaparli, V and Kontoe, S and Taborda, D and Potts, D},
publisher = {International Society of Soil Mechanics and Geotechnical Engineering},
title = {Liquefaction modelling of a strong motion station in Christchurch, New Zealand},
url = {http://hdl.handle.net/10044/1/49693},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - Advanced constitutive models can replicate several aspects of soil behaviour, but, due to their complexity and number of parameters,  they  need  more  sophisticated  and  realistic  validation  under  general  loading  conditions.  When  modelling liquefaction phenomena, the lack of field monitoring data means that modeltesting, such as centrifuge experiments, is often used as benchmark for the numerical analyses. The 2010-2011 Canterbury earthquake sequence in New Zealand was recorded by a number of strong motion stations at various distances from the earthquake epicentre. Additionally, an extensive field and laboratory programmehassincebecome available, adequately describing the geological, geotechnical and  hydrogeological  conditions  in  the  area.  As  such,the  performance  of  a  two-surface  bounding  surface  plasticity constitutive model for sands, calibrated based on site-specific laboratory data, is assessed usingfield evidenceof a strong motion  stationin  fully-coupled  effective  stress-based  finite  element  analyses.  As  the  real  stratigraphy  is complex,  with layers  of  silts  and  clays  between  the  sandy  strata,  a  simpler  cyclic  non-linearelasticmodel,which  can  adequately incorporate the basic aspects of dynamic soil behaviour, is also used to model the non-liquefiable strata. To specify the input ground motion at the base of the deposit, the recordedgroundsurface motionata sitewith no evidence of liquefaction isdeconvolved and compared with the outcrop predictions ofa New Zealand-specificground motion prediction equation. The  numerical  results  are  compared  with  the  recorded horizontal  ground surface  acceleration  time-history  of  the  22ndFebruary 2011 seismic event, exhibiting very good agreement.
AU  - Tsaparli,V
AU  - Kontoe,S
AU  - Taborda,D
AU  - Potts,D
PB  - International Society of Soil Mechanics and Geotechnical Engineering
PY  - 2017///
TI  - Liquefaction modelling of a strong motion station in Christchurch, New Zealand
UR  - http://hdl.handle.net/10044/1/49693
ER  -
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