Ph.D., Civil Engineering, University of California at Berkeley, 1990
M.S., Civil Engineering, University of California at Berkeley, 1988
B.Eng. (Hons), Civil Engineering, University of Auckland, New Zealand, 1986
Civil Engineer, California, No. C048734
Seismic Isolation Engineering, Inc., 12 years
University of California at Berkeley, 10 years
PROFESSIONAL SOCIETY MEMBERSHIPS AND COMMITTEE ACTIVITIES
Member of the American Society of Civil Engineers
Member of the Earthquake Engineering Research Institute
Member of the New Zealand National Society for Earthquake Engineering
Member of the Structural Engineers Association of Northern California
Advanced Liquid Metal Reactor (ALMR) Seismic Isolation Working Group
SEAONC Base Isolation Subcommittee
SEAONC Base Isolation Subcommittee Energy Dissipation Working Group
AASHTO T-3 Working Group
ASCE Code Committee for Seismic Isolation Testing Provisions
Professor Ian G. Buckle, Vice-Chancellor, University of Auckland, New Zealand
Professor Emeritus Vitelmo V. Bertero, University of California at Berkeley
Professor James M. Kelly, University of California at Berkeley
EXPERIENCE AND QUALIFICATIONS
Principal, Seismic Isolation Engineering, Inc., Oakland (1993 - present)
Research Engineer, University of California at Berkeley (1990 - 1996)
Research Assistant, University of California at Berkeley (1986 - 1990)
Dr. Aiken has twenty years of experience in earthquake, structural and civil
engineering. Specialist areas encompass eleven years of experience in the
field of seismic isolation, and nine years of experience in the field of passive
energy dissipation for seismic structural control. His interest and activities
in the field of seismic isolation began in 1984, with involvement on two full-scale
field tests of isolated bridges in New Zealand. Since then he has been extensively
involved in research activities in the field. These have included more than
15 experimental studies of the dynamic characteristics of elastomeric seismic
isolation bearings, and 4 earthquake simulator studies of the performance
of different isolated structures. In 1986 he developed an interest in the
field of structural control, and it was in this area, passive energy dissipation
for seismic structural control, that he received his Ph.D. in 1990. His research
work involved the earthquake simulator testing and analytical studies of a
large structural frame with two different types of passive damping systems.
He is familiar with various seismic design requirements including the Uniform
Building Code, the SEAOC Blue Book and the New Zealand seismic code. He has
published more than 70 technical papers and reports related to earthquake
engineering, primarily in the fields of isolation and passive energy dissipation
for seismic structural control.
In the field of seismic isolation and passive structural control Dr. Aiken's
Recognized in the U.S., U.K., Italy, Japan, and New Zealand as a leading
expert in seismic isolation technology.
Tested the following types of isolation bearings at the Earthquake Engineering
Research Center of the University of California at Berkeley:
SAFR 1/4-scale bearings
PRISM 1/4- and 1/2-scale bearings
Bridgestone high-damping elastomeric bearings
San Bernardino County Medical Center Replacement Project pre-prototype
Foothill Communities Law & Justice Center 10-year re-test of high-damping
13-year re-test of lead-rubber bearings
Two types of high-damping bearings and lead-rubber for the EERC/Shimizu
joint research project
Three types of MRPRA high-damping elastomeric bearings
Bearings for LNG tanks in South Korea
Bearings for UNIDO demonstration buildings in Indonesia and China
Three types of high-damping rubber bearings for the ALMR
Tested the following isolated structures in earthquake simulator experiments:
9-story steel frame, with 5 types of elastomeric isolation systems
3-story reinforced-concrete building with 3 types of elastomeric isolation
5-story steel frame with two types of elastomeric isolation systems,
for the NPR isolation study
7-story reinforced-concrete frame with three types of elastomeric
Managed a Caltrans-sponsored field testing project investigating the dynamic
characteristics of a 700-ft., long isolated bridge, and a 1200-ft. long
single-column concrete box-girder viaduct, both located in Walnut Creek,
Participated in the field testing of 900-ft. and 300-ft. long isolated
bridges in New Zealand.
Member of several California and national committees which are developing
design code requirements for seismic isolation and passive energy dissipation
for building structures.
Member of the AASHTO T3 Committee Task Group which developed the 1997
AASHTO ``Guide Specification for Seismic Isolation Design"for isolation
Managed the prequalification testing program of fluid viscous dampers
from four different manufacturers for the seismic retrofit of the Golden
Tested the following types of passive energy dissipation systems:
3M viscoelastic double-layer shear damper
Sumitomo friction damper
Pall-type friction damper
Enidine, FIP, Lisega and Taylor Devices' viscous dampers for the Golden
Fluor-Daniel Energy Dissipating Restraint (EDR) friction damper
NiTi shape memory alloy dampers
He has attended numerous international conferences, workshops, and symposia
on structural and earthquake engineering.
Invited lecture to the JSSI Forum on Seismic Isolation, Japan Society
for Seismic Isolation, Tokyo, August 1994.
Co-author of the invited paper on seismic energy dissipation for the ATC-17-1
Conference on Seismic Isolation, Passive Energy Dissipation and Structural
Control, March, 1993.
U.S. delegate to the U.S.-Japan Joint Workshop on Earthquake Protective
Systems for Bridges, Tsukuba, Japan, 1992.
Manager of the UCB-EERC/Shimizu Corporation Joint Research Project on
seismic isolation, 1991-1992.
Analysis and design of structural steel roof systems and other structural
steel components for three high-rise buildings in Auckland, New Zealand.
Analysis and seismic retrofit design for a number of industrial structures,
including warehouses, towers, and general equipment.
Experience with the structural analysis computer programs: COSMOS/M, SAP-90,
SADSAP, SAP-2000, ETABS, PC-ANSR, ANSR-1, DRAIN-2DX, DRAIN-3DX, 3D-BASIS.