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SUMMARY:Investigating the cyclic behaviour of clays using a kinematic hard
 ening soil model - Dr Gaetano Elia (Newcastle University)
DTSTART:20160413T183000Z
DTEND:20160413T193000Z
UID:TALK65690@talks.cam.ac.uk
CONTACT:Stefan Ritter
DESCRIPTION:Summary: The stability of geotechnical structures under repeat
 ed loading depends largely on the induced cyclic shearing stresses. The de
 sign of these structures usually requires engineers to employ advanced soi
 l models in their analyses. While a number of such models do exist\, their
  validation against cyclic laboratory tests is still limited. In particula
 r\, the influence of the initial structure of clay and its subsequent degr
 adation under cyclic loading appears to be insufficiently investigated fro
 m both experimental and constitutive modelling standpoint.\nThe work outli
 ned in this presentation adds a new contribution to the theoretical unders
 tanding of the cyclic response of clayey materials\, presenting the extens
 ive validation of an advanced kinematic hardening model against laboratory
  data on a number of natural and compacted clays found in literature. The 
 effects of overconsolidation ratio and structure degradation on the evolut
 ion of shear and hysteretic soil behaviour over a wide strain range\, toge
 ther with cyclic pore water pressure generation\, are analysed in detail. 
 The predictions of the model are found to be in good agreement with the ex
 perimental data\, thus demonstrating its capabilities in capturing importa
 nt features of clay response during cyclic loading\, although further inve
 stigation is suggested.\n\nShort biography: Gaetano Elia is a Lecturer in 
 Geotechnical Engineering at the School of Civil Engineering and Geoscience
 s of Newcastle University (UK) since 2009. He graduated in Civil Engineeri
 ng at the Technical University of Bari (Italy) and gained a Ph.D. in Geote
 chnical Engineering from the same university in 2004. He conducts research
  in the area of soil mechanics\, with specific insight in advanced soil co
 nstitutive modelling and numerical simulation of soil dynamics problems. H
 e acts as reviewer for a number of international journals and for EPSRC-UK
 . He is currently a committee member of the Northern Geotechnical Group (N
 GG-ICE)\, committee member of the Earthquake Engineering Field Investigati
 on Team (EEFIT)\, member of the Society for Earthquake and Civil Engineeri
 ng Dynamics (SECED)\, the British Geotechnical Association (BGA) and the I
 talian Geotechnical Association (AGI). He also teaches geotechnics\, geote
 chnical design\, soil modelling and seismic resistant design to undergradu
 ate and postgraduate students at Newcastle University.\n
LOCATION:Harrods Room\, Emmanuel College
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