Research Interests
My research is broadly focused on geotechnical earthquake
engineering, data analytics in civil engineering, and engineering seismology. My
current research focuses on the development of an open-source relational
database of liquefaction case-histories. The development of this tool is part of
the broader
Next-Generation Liquefaction (NGL) project. The NGL database is a formal
relational database created as part of a wide multi-disciplinary research effort
that combines data analytics, geotechnical engineering, and engineering
seismology. The NGL database is mirrored onto DesignSafe-ci and data
visualization tools are
available here as Hazard Apps.
My area of expertise includes system reliability of
distributed infrastructure such as river-protection levee systems, pipelines,
and energy distribution networks. Risk assessment of these systems involves the
analysis of statistical distributions and spatial correlation models of demand
and capacity over the entire system. This robust framework is heavily reliant on
geotechnical site characterization data and can be applied to several
anthropogenic and natural hazards, accounting for future challenges such as the
consequences of sea level rise due to climate change on river- and
coastal-protection systems, or the effects of population growth in urban
environments.
I am involved in a multidisciplinary research project
regarding the use of Synthetic Aperture Radar (SAR) data to identify
post-disaster damage. On this topic I am collaborating with a team of radar
scientist, geologists, and engineers as part of a project funded by NASA. I am
currently working on identifying and compiling high-quality case histories to
validate
Damage Proxy Maps created using multi-epoch SAR images. As part of this
project I am utilizing data from the 2016 Central Italy earthquake sequence, the
2019 Ridgecrest earthquakes, and the 2020 explosion at the Port of Beirut
(Lebanon).
My research interests also include analysis of the seismic
performance of levees and embankments. I have worked on the development of
empirical seismic fragility models for levees relative to discrete damage levels
as a function of independent variables derived from geotechnical earthquake
engineering analysis. I have also worked on the analysis of international levee
guidelines for the evaluation of policy-related issues and the definition of
better and more sustainable practices. I am also interested in 2D and 3D
advanced numerical modeling of the performance of important civil structures and
lifelines including earth dams.
I am a member the International Joint Technical Committee on
Earthquake-Induced Landslides (JTC1-TR4). This committee is under the auspices
of the of the Federation of the International Geoengineering Societies (FedIGS).
The Joint Technical Committee that I am part of is creating a global inventory
of high-quality case-history of earthquake-induced landslides. The goal of the
committee is to develop guideline documents with improved procedures for the
analysis of earthquake-induced landslides.
I am interested in geotechnical extreme events reconnaissance
and I have performed a substantial engineering post-earthquake reconnaissance in
Central Italy, after the August-October 2016 earthquake sequence. This research
effort is part of the activities of Geotechnical Extreme Event Reconnaissance
Association (GEER), sponsored by the National Science Foundation. Results from
this research are summarized in a series of
Technical Reports published by GEER for which I served as main Editor.
Furthermore, I joined and/or closely collaborated with GEER teams after the
following events: the
2018 Hokkaido earthquake,
the 2019 Ridgecrest earthquake
sequence, and the
2020
explosion at the Port of Beirut.
My research interests also include: sensing and monitoring of
geotechnical system with multidisciplinary approaches,
limit
analysis theory approaches for seismic rock slope stability analytical
and boundary element method analysis for the evaluation of blast-induced wave
propagation, and effects of topographic irregularity and slopes on seismic
waves.