1 MICROFOR Micropile Interstate Cooperative Research on Foundations and slOpe Reinforcement Micropile Interstate Cooperative Research on Foundations and Slope Reinforcement International Center for Ground Improvement Polytechnic University IWM, 2003 Dr. Donald A. Bruce Senior Research Advisor, ICGI Mr. Gary M. Weinstein Research Fellow, ICGI Prof. Ilan Juran Executive Director, ICGI

2 MICROFOR Micropile Interstate Cooperative Research on Foundations and slOpe Reinforcement MICROFOR Goals & Partnership Structure -- Users (Owners & Clients) Micropile Network Systems for Highway & Civil Infrastructure Applications A GovernmentIndustryUniversity Partnership for Research, Development, Testing and Performance Monitoring of MICROFOR Construction Industry (Contractors & Suppliers) International Academic, Consulting Research & Communities

3 MICROFOR Micropile Interstate Cooperative Research on Foundations and slOpe Reinforcement MICROFOR Partners Government-Infrastructure Agencies Industry International Research Community

4 MICROFOR Micropile Interstate Cooperative Research on Foundations and slOpe Reinforcement MICROFOR Research & Integration Flow Chart

5 MICROFOR Micropile Interstate Cooperative Research on Foundations and slOpe Reinforcement Micropile Design Concepts “Case 1.5” Case 1Case 2

6 MICROFOR Micropile Interstate Cooperative Research on Foundations and slOpe Reinforcement Foreseen Micropile Group Layout for Full-Scale Field Test Baseline Reticulation Slope Stabilization Inclination Foundation Support

7 MICROFOR Micropile Interstate Cooperative Research on Foundations and slOpe Reinforcement Construction Industry Input 1.Type of Micropile to be Tested 2.Design Configuration (inclination, geometry, number, spacing, etc.) 3.Construction Details (pile cap connections, composite sections, Recommendations for Full-Scale Field Testing Review and Update of Engineering Manual

8 MICROFOR Micropile Interstate Cooperative Research on Foundations and slOpe Reinforcement MICROFOR Research Objectives Full-Scale Experiments Scalability Design Geometrical Configurations Constructability Economics MICROFOR Research Objectives Behavior of the composite Micropilereinforced soil systems Effect of the main group and network system parameters Basic load transfer mechanisms Engineering Guidelines & Performance Assessment of Foundations and Slopes Reinforced with Micropile Network Systems

9 MICROFOR Micropile Interstate Cooperative Research on Foundations and slOpe Reinforcement Micropile systems offer large resistance to lateral loading by mobilizing the axial resistance of the piles, rather that the bending stiffness. Micropile systems offer cost-effective engineering solutions to urban infrastructure applications including underpinning which cannot be cost effectively resolved with conventional technology. Micropile systems offer flexibility in the design which can be cost effectively adapted to varying site conditions. Micropile systems offer high seismic resistance and innovative solutions to liquefiable soils  The focus must be on optimizing system performance through scalable and predictable design particularly for foundation retrofitting applications in the urban setting where other techniques cannot compete.  Take advantage of soil-pile-soil interaction (in addition to geotechnical and structural capacity). Do not disregard it and do not allow for it to handicap the design! And construction technology... Preliminary Feasibility Assessment Why Hybrid Systems of Micropiles?

10 MICROFOR Micropile Interstate Cooperative Research on Foundations and slOpe Reinforcement MICROFOR Organizational Structure University of Lille Cambridge CERMES WSU Cornell Polytechnic PANYNJ FHWA ADSC Contractors State DOTS NYSDOT Mr. Gary Weinstein Project Manager ICGI Dr. IsamShahrour Senior Research Advisor ICGI / Secretary TC17 Prof. Ilan Juran Executive Director ICGI Dr. Donald Bruce Senior Research Advisor ICGI / Chair IWM. Prof. Roger Frank Senior Research Advisor ICGI / Technical Director FOREVER MICROFOR Board of Directors CoChair Mr. A.DiMillio FHWA Mr. TomShantz StateDOTs Executive Committee CoChair Dr. Donald Bruce Prof. Ilan Juran ICGI International Academic Advisory Board Industry Advisory Board