Research and Project Experience

Dr. Armstrong has extensive research and project work in conducting seismic evaluations of earth structures that have included slope stability analysis studies, nonlinear deformation analysis (NDA) studies, and ground motion studies. NDA modeling has been conducted with FLAC. Ground motion studies have included deterministic seismic hazard analyses, probabilistic seismic hazard analysis, amplitude-scaled time history development, and spectrum-matched time history development. A listing of key projects is below. 

 

Project

Date

Slope stability

NDA

GM studies

Novato Creek Dam

2010

 

 

Los Vaqueros Dam

2010

 

 

Del Valle Dam

2013

 

 

Stevens Creek Dam

2013

Lake Orinda Dam

2014

 

 

Thermalito Afterbay

2015

 

 

Camanche Dam

2015

 

Chabot Dam

2015

 

Lenihan Dam

2018

 

 

Anderson Dam

2018

 

 

Kidd Lake Auxiliary Dam

2019

 

 

EBMUD Inner Harbor Crossing

2019

 

 

Santa Felicia Dam

2019

 

 

El Capitan Dam

2020

 

 

 

Research projects conducted by Dr. Armstrong have also include several detailed NDA studies. These projects include a two-year California Geological Survey Strong Motion Instrumentation Program NDA study, an International LEAP NDA study, and centrifuge modeling studies at the Center for Geotechnical Modeling at UC Davis.