CANLEX full-scale experiment and modelling

Citation
Pm. Byrne et al., CANLEX full-scale experiment and modelling, CAN GEOTECH, 37(3), 2000, pp. 543-562
Citations number
26
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Civil Engineering
Journal title
CANADIAN GEOTECHNICAL JOURNAL
ISSN journal
0008-3674 → ACNP
Volume
37
Issue
3
Year of publication
2000
Pages
543 - 562
Database
ISI
SICI code
0008-3674(200006)37:3<543:CFEAM>2.0.ZU;2-U
Abstract
A major aim of the Canadian Liquefaction Experiment (CANLEX) was to verify analysis procedures for predicting liquefaction phenomena. Towards this pur pose, two loading events were carried out: a field event comprising a clay embankment built over a loose sand foundation layer, and a centrifuge test performed on a model of a sand embankment structure. Both the field event a nd the centrifuge model were planned so as to induce a static liquefaction failure and were instrumented to observe their response in terms of displac ement and pore pressure. The fundamental mechanical characteristics of the foundation layer were determined from laboratory element tests (triaxial an d simple shear). These tests formed the basis for the stress-strain modelli ng used in the numerical analyses. Two fundamentally different modelling te chniques were used. One involved a fully coupled plasticity model, and the other involved a model based on a collapse-surface approach. The model and prototype structures were then analyzed and the predicted results in terms of displacements and pore pressures were compared with the measured values. The results from both approaches were found to be in reasonable agreement with the measurements, provided allowance was made for direction of loading and drainage effects were accounted for.