CONTENTS FEATURES I DFI DEEP FOUNDATIONS The Magazine of the Deep Foundations Institute (DFI) is published bimonthly by DFI. 326 Lafayette Avenue, Hawthorne, NJ, 07506, USA T: 973.423.4030 | F: 973.423.4031 Email: [email protected] Executive Director Theresa Rappaport [email protected] Executive Editor Helen Robinson [email protected] Managing Editor Emeritus Manuel A. Fine, [email protected] Advertising Manager Karol Paltsios, [email protected] DFI Executive Committee President, Robert B. Bittner Vice President, John R. Wolosick Secretary, Matthew Janes Treasurer, Dan Brown Past President, James A. Morrison Other Trustees Patrick Bermingham David Borger Gianfranco Di Cicco Rudolph P. Frizzi Frank Haehnig Bernard H. Hertlein Gerry Houlahan James O. Johnson Douglas Keller Samuel J. Kosa K.S. Rama Krishna Marine Lasne J. Erik Loehr Raymond J. Poletto Michael H. Wysockey The Sunrise Powerlink project involved construction of San Diego Gas and Electric’s (SDG&E’s) new 117 mile (188 km) 500/230 kilovolt transmission line from Imperial County to San Diego County, Calif. The project received numerous industry awards for excellence including the C. William Bermingham Innovation Award, which recognized the innovative use of prefabricated steel micropile caps to increase safety, accelerate project schedule and minimize the project carbon footprint. DFI’s Outstanding Project Award (OPA) and ISM’s World Cup of Micropiles Challenge Award honored the project as a whole and its positive outcome and industry example. 70 Analysis of CDSM for Highway Bridges Wei-Yu Chen, Ph.D., P.E., Andrew Bro, P.E., G.E., Shahriar Vahdani, Ph.D., P.E., and Andy Herlache, P.E., G.E. The Presidio Parkway project in California will reconstruct approximately 1.6 miles (2.6 km) of highway connecting the Golden Gate Bridge to the city of San Francisco. Cement deep soil mixing (CDSM) ground improvement was considered to reinforce the bridge foundations and reduce pier deflections. FLAC 3D and PLAXIS 3D analyses were conducted to evaluate the dynamic response of the soil-pier-CDSM system and to optimize the CDSM dimensions and replacement ratios. 28 Sunrise Powerlink: An Innovation in Foundation Design Nick Salisbury and Steve Davidow, P.E., S.E. 65 Member Profile: Brian Isherwood, P.Eng., Principal, Isherwood Associates: Deep Thinker With a Love of the Arts DEEP FOUNDATIONS • SEPT/OCT 2014 • 19 O T N A S D I N N U S T O I F T U E P T E E D
