Effects of compaction on the seismic performance of embankments built with gravel

The effects of compaction on the seismic performance of gravelly embankments is investigated transferring the precision of very accurate laboratory tests on the constituent material into the prediction of the large scale response. The stress-strain response observed upon monotonic and cyclic tests i...

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Bibliographic Details
Published in:Soil dynamics and earthquake engineering (1984) 2018-03, Vol.106, p.231-242
Main Authors: Modoni, Giuseppe, Albano, Matteo, Salvatore, Erminio, Koseki, Junichi
Format: Article
Language:English
Subjects:
Abutments
Collapse
Compaction
Computer simulation
Cyclic testing
Dependence
Earthquakes
Embankment
Embankments
Gravel
High resistance
Impact analysis
Laboratory tests
Landfills
Parametric analysis
Propagation
S waves
Seismic activity
Seismic engineering
Seismic response
Soil compaction
Soil density
Soils
State variable
Stress-strain curves
Studies
Wave propagation
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Summary:The effects of compaction on the seismic performance of gravelly embankments is investigated transferring the precision of very accurate laboratory tests on the constituent material into the prediction of the large scale response. The stress-strain response observed upon monotonic and cyclic tests is captured by a critical state elastic-plastic model used as a virtual simulator of experiments to determine the influence of the initial state on the soil response. This dependency is introduced in equivalent linear elastic-perfectly plastic models as function of the state variable ψ to study the propagation of shear waves through horizontally layered landfills and embankments. A parametric analysis is performed assigning systematically variable seismic inputs, soil density and geometry to see the role of these factors on the soil response and the sliding resistance of the embankment. The study reveals an exceptionally high resistance of the gravel that enables embankment with steep abutments to resist against severe earthquakes. •The role of compaction on the seismic response of gravelly embankments is studied.•The behaviour of Chiba gravel is observed with monotonic and cyclic tests.•A critical state model is used to study the effect of density on the soil response.•A parametric analysis is performed on embankments with variable geometry.•The study reveals an exceptionally high resistance of the gravel.
ISSN:0267-7261
1879-341X
DOI:10.1016/j.soildyn.2018.01.005