|
He is an internationally recognized consultant for soil creep and slope
stability analyses, and on soil-pipe interaction studies for both heated
oil pipelines and pipelines in frozen ground, and has done extensive
research on the design of static and cyclic holding capacity of anchors
for the U.S. Navy. He was a principal investigator on a seismic-induced
landslides project sponsored by the National Earthquake Hazard Reduction
program. He served as a geotechnical consultant to the then County
Engineers office of Los Angeles County in the 1960s, the Sandis National
Laboratories in New Mexico, the Civil Engineering Laboratory of the Navy
in Preot Hueneme in the 1970s. Currently, he is involved with consulting
work for the Metro Rail in Los Angeles and Point Loma Tunnel Outfall
project in San Diego, and site response analysis associated with the
Northridge earthquake.
He was a member of the California State Board of Mining and Geology,
representing the geotechnical engineering profession, and chaired the
Technical Advisory Board and Grading Appeals Board for the County of
Orange, and is a current member of the Geological Advisory board and a
member of the seismic subcommittee to recommend code changes for the
City of Los Angeles.
Dr. Yen has worked on literally hundreds of geotechnical projects
providing services ranging from a few days to long-term contracts. A
selected list of major projects on which he has consulted is described below:
Deep water pipelines, Frigg to Karmoy, Norway; Arctic Mobile Drilling (AMDS) project, Beaufort Sea;
In-situ Iol Shale Retorting Chamer
Stability Project, Colorade; Vertical Moored Platform Project (VMP),
AMOCO; High Seismic Containment Design Project, General Electric; Vidal
Nuclear Generating Station, San Onofre Nuclear Generating Station, DEIR
Joaquin Nuclear Station. He served as the geotechnical consultant on
high-rise foundations, and for a number of dams, including the award
winning Balsam Meadow Dam in California. He also served as a geotechnical
consultant to California Department of Transportation (Caltrans), the
Irvine Company, Mission Viejo Company, and conducted special
investigations on collapsible soil and expansive soil; on the blast-induced
slope stability problems of Panama Canal. He is the lead geotechnical
consultant to mitigate the Bif Rock Mewsa landslide of the County of Los
Angeles. Other special investigations include frozen soil uplift
resistance study for the Northwest Pipeline Company; Sabkha Sand Study in
Saudi Arabia; Ice Island Drilling Platfom in Beaufort Sea; Gas Leakage
and Gas Induced soil Fracturing In Venezuela. He is also the geotechnical
consultant on a nationwide project for the Gas Research Institute in
Chicago and the Southwest Research Institute of Texas. |
