3D Engineering Geological Modeling to Investigate a Liquefaction Site: An Example in Alluvial Holocene Sediments in the Po Plain, Italy

Liquefaction-induced surface manifestations are the result of a complex geological–geotechnical phenomenon, driven by several controlling factors. We propose a multidisciplinary methodological approach, involving engineering geologists, geomorphologists, sedimentologists, and geotechnical engineers,...

Full description

Saved in:
Bibliographic Details
Published in:Geosciences (Basel) 2022-04, Vol.12 (4), p.155
Main Authors: Meisina, Claudia, Bonì, Roberta, Bordoni, Massimiliano, Lai, Carlo Giovanni, Bozzoni, Francesca, Cosentini, Renato Maria, Castaldini, Doriano, Fontana, Daniela, Lugli, Stefano, Ghinoi, Alessandro, Martelli, Luca, Severi, Paolo
Format: Article
Language:English
Subjects:
3D engineering geological model
Alluvial channels
Alluvial deposits
Alluvial plains
Boreholes
Earth science
Earthquakes
Engineering
Engineering geology
Floodplains
Fluvial deposits
Geologists
Geology
Geomorphology
Geotechnical engineering
Grain size
Hazard assessment
Holocene
Holocene fluvial sequence
Investigations
Laboratories
Laboratory tests
Levees & battures
Liquefaction
Lithology
Medieval period
Po Plain
Recent sediments
Sediments
silty sand
Three dimensional models
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Liquefaction-induced surface manifestations are the result of a complex geological–geotechnical phenomenon, driven by several controlling factors. We propose a multidisciplinary methodological approach, involving engineering geologists, geomorphologists, sedimentologists, and geotechnical engineers, to build a 3D engineering geological model for liquefaction assessment studies. The study area is Cavezzo (Po Plain, Italy), which is a municipality hit by superficial liquefaction manifestations during the Emilia seismic crisis of May–June 2012. The site is characterized by a Holocene alluvial sequence of the floodplain, fluvial channel, and crevasse splay deposits prone to liquefaction. The integration of different geotechnical investigations, such as boreholes, CPTm, CPTu, and laboratory tests, allowed us to recognize potentially liquefiable lithological units, crucial for hazard assessment studies. The resulting 3D engineering geological model reveals a strict correlation of co-seismic surface manifestations with buried silty sands and sandy silts within the shallow 10 m in fluvial channel setting, which is capped and laterally confined by clayey and silty deposits.
ISSN:2076-3263
2076-3263
DOI:10.3390/geosciences12040155