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4 th NEES Annual Meeting Kenneth H. Stokoe, II Washington, DC June 22, 2006

Collaborative Activities of a NEES Equipment Site: Examples from nees@UTexas. 4 th NEES Annual Meeting Kenneth H. Stokoe, II Washington, DC June 22, 2006. Outline. Mission of Equipment Sites Introduction to nees@UTexas On-going NEESR Projects On-going non-NEESR Projects

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4 th NEES Annual Meeting Kenneth H. Stokoe, II Washington, DC June 22, 2006

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  1. Collaborative Activities of a NEES Equipment Site: Examples from nees@UTexas 4th NEES Annual Meeting Kenneth H. Stokoe, II Washington, DC June 22, 2006

  2. Outline • Mission of Equipment Sites • Introduction to nees@UTexas • On-going NEESR Projects • On-going non-NEESR Projects • Education, Outreach, and Training

  3. Mission of Equipment Sites • Equipment Sites (ES) facilitate large-scale field and laboratory experiments that were not possible before the NEES Collaboratory • maintain, operate and enhance the major pieces of the testing equipment • educate potential users, advise and assist in proposal preparation, participate in safely conducting the experiments, and assist in importing data to NEEScentral • 2. ES support education, outreach and training activities

  4. Introduction to nees@UTexas

  5. Personnel at nees@UTexas PI: Kenneth H. Stokoe, II Co-PI: Ellen M. Rathje Co-PI: Clark R. Wilson Operations Manager: Farn-Yuh Menq Computer Systems Analyst: Christopher Stanton Vibroseis Specialist: Cecil Hoffpauir Mechanical Technician: Andy Valentine Electrical Technician: Frank Wise Administrative Staff: Teresa Tice-Boggs and Norma Gonzales

  6. Overview of nees@UTexas Equipment Site • Function: dynamic field testing of geotechnical and structural systems with large-scale mobile shakers • Equipment: • Three mobile shakers with diverse force and frequency capabilities • Tractor-trailer rig to move shakers • Instrumentation van + trailer • Wired and wireless data acquisition systems • State-of-the-art field instrumentation • Tele-presence capabilities for remote researcher interaction

  7. Tri-Axial Shaker (“T-Rex”) • Buggy-mounted vibrator • Total weight – 64,000 lb (29,030 kg) • 32 ft (9.8 m) long • 8 ft (2.4 m) wide • 3 Vibration orientations • Vertical • Horizontal in-line • Horizontal cross-line • Uses vegetable-based hydraulic oil (Mobile EAL 224H)

  8. Installation of Embedded Sensors Hydraulic Cylinder Wire Ropeand Electrical Cable Hollow Push Rod Liquefaction Sensor Liquefiable Layer

  9. Low-Frequency Shaker (“Liquidator”) • Built on same platform as the T-Rex • Optimized for low-frequency (down to 0.5 Hz) • force output

  10. Urban Shaker (“Thumper”) • Built for high-frequency force output (beyond • range of T-Rex and Liquidator) • Built for use in urban environments • Total weight = 22,600 lb (9,980 kg) • Peak force = 6,000 lb (26.7 kN) • Transformable to operate vertically or horizontally

  11. Tractor-Trailer Transport System (for T-Rex and Liquidator)

  12. Instrumentation Van + Trailer

  13. On-going NEESR Projects

  14. Collaborative Research: Using NEES as a Testbed for Studying Soil-Foundation-Structure-Interaction PI: Sharon L. Wood Universities involved: University of Texas at Austin, Purdue University, University of California–Davis, University of Nevada-Reno, University of Washington-Seattle, and University of California–Berkeley

  15. Field Evaluation of Liquefaction Resistance at Previous Liquefaction Sites in Southern California (Imperial Valley) PIs: Kenneth H. Stokoe, II and Ellen Rathje nees@UCSB Wildlife Refuge Liquefaction Field Site

  16. Study of Surface Wave Methods for Deep Shear Wave Velocity Profiling Applied to the Deep Sediments of the Mississippi Embayment PI: Brent Rosenblad Liquidator MORT strong motion Station at Tiptonville, TN

  17. On-going Non-NEESR Projects (also “Outreach” Activity)

  18. Spectral-Analysis-of-Surface-Wave (SASW) Testing at Yucca Mountain Site PI: Kenneth H. Stokoe, II

  19. Education, Outreach, and Training

  20. Education: Undergraduate Foundation Engineering Class

  21. Education:Graduate Soil Dynamics Class

  22. Education:Demonstration at an Elementary School in Gosnell, AR

  23. Outreach: NEES/IRIS/USGS Workshop Topic: exploring the potential of a multi-facility and multi-funded approach to solving scientific and engineering problems Where: University of Texas, Austin, Texas When: April 29 and 30, 2004 Recent Outcome: 3 projects Primarily funded by IRIS and USGS Spearheaded by Joan Gomberg, USGS 31 invited participants

  24. Outreach:NEES/IRIS/USGS Workshop

  25. Up Coming Users' Training • When: mid November, registration opens on October 1st. • What: choosing the right equipment, budget planning, test scheduling, and using SingleShot. • Why: get your NEESR proposal done faster. • Where: WebEx based on-line training – no traveling cost!

  26. Thank You • U. S. National Science Foundation, Directorate for Engineering, Division of Civil and Mechanical Systems for funding under the George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) Program Contract No. CMS-0086605 (Construction Phase) • NEESinc supported by the George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) Program of the National Science Foundation under Award Number CMS-0402490 (Operation Phase)

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