Seismic Design of Tunnels





Acknowledgments

I wish to express my thanks to the Career Development Committee and Paul H.

Gilbert, the original initiator of the William Barclay Parsons Fellowship Program, for

selecting my proposal and providing continuous support and guidance throughout this

study. Thanks are also due to the Board of Directors of Parsons Brinckerhoff Inc. for

making the growth and flowering of an engineer’s idea possible.

The fruitful results of this exciting study would never have been possible without

technical guidance from three individuals — my fellowship mentors, Dr. George Munfakh

and Dr. Birger Schmidt, and the technical director of underground structures, Dr. James

E. Monsees. Their constant critiques and advice were sources of inspiration and

motivation.

Appreciation is due also to Tom Kuesel, who gave constructive technical comments

on the content of this study, and to Tim Smirnoff, who provided much of the tunnel

structural data of the LA Metro project. Ruchu Hsu and Rick Mayes deserve my thanks

for generously giving their time and comments on the draft of this monograph. Gratitude

is offered to many other individuals for numerous technical discussions on real world

seismic design issues for the ongoing Central Artery/Third Harbor Tunnel project and the

Portland Westside LRT project. They include: Louis Silano, Vince Tirolo, Anthony

Lancellotti, Dr. Sam Liao, Brian Brenner, Alexander Brudno, Mike Della Posta, Dr. Edward

Kavazanjian, Richard Wilson, and many others.

Very special thanks to Willa Garnick for her exquisite editing of the manuscript, and

to Randi Aronson who carefully proofread the final draft of the monograph. Their wonderful

work gave this fellowship study a beautiful finish. I also acknowledge the support

and

contribution of personnel of the New York office Graphics Department, particularly

Pedro

Silva who prepared the graphics and tables and laid out the text.

I simply could not put a period to this study without expressing thanks to my wife

Yvonne Yeh, my son Clinton and my daughter Jolene. Their sacrificing support of my

work through many late nights and weekends contributed the greatest part to this

monograph.


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