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FOURTH NATIONAL WORKSHOP ON BRIDGE RESEARCH IN PROGRESS:
 
RESEARCH ABSTRACT
 
Title:
The Use of Reticulated Micropile Groups for Bridge Foundations
Author(s) and Affiliation(s):
Fred H. Kulhawy, School of Civil and Environmental Engineering Cornell University, Ithaca, NY James A. Mason, California Department of Transportation, Sacramento, CA
Principal Investigator:
Fred H. Kulhawy
Sponsor(s):
Federal Highway Administration
Research Start Date:
June 1996 (estimated)
Expected Completion Date:
June 2000
Research Objectives:
The objectives are to: investigate the effectiveness of reticulated micropile groups (RMG) in dry sands; investigate the basic mechanics of the components of a RMG; investigate the influence of contractiveness and/or pilativeness of the soils upon the performance of the RMG; compare the performance of the RMG to traditionally installed vertical deep foundation elements; and, develop predictive analytical modeling tools.
Expected Products or Deliverables:
Confirmation of the global surface response of RMG, under axial and lateral loading; confirmation of the engagement of the confined soil mass; determination of optimal trends for spacing (density), batter, and inclination of RMG; and equations, computer code and general design methodology for the design of RMG written and presented for the general foundation engineer.

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