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University Consortium of Instructional Shake Tables Juan M. Caicedo.

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Presentation on theme: "University Consortium of Instructional Shake Tables Juan M. Caicedo."— Presentation transcript:

1 University Consortium of Instructional Shake Tables Juan M. Caicedo

2 .cive.wustl.edu.cive.wustl.edu Outline Project Description Objectives Hardware Description Outcomes Conclusions Future

3 .cive.wustl.edu.cive.wustl.edu Project Description Need for introduction to dynamic behavior and earthquake engineering at the undergraduate level Large scale shake tables require significant resources and are not widely available. Development of experiments takes time and expertise

4 .cive.wustl.edu.cive.wustl.edu Project Description History Proposed at 1998 Trilateral Earthquake Center Education Meeting MAE Project ED-9: Instruc. Shake Tables NSF – DUE/CCLI Funding Obtained (DUE Grant No. 9950340 – Aug 1999) Consortium became operational summer 2000 under direction of Shirley Dyke

5 .cive.wustl.edu.cive.wustl.edu University of Alaska – Fairbanks University of Hawaii UC San Diego UCLA UC-Irvine Univ. of Nevada – Las Vegas Univ. or Nevada - Reno UC Davis Stanford Oregon State Univ. San Jose State Univ. Penn State UIUC Southern Illinois Univ. - Edwardsville Virginia Tech Washington Univ. Notre Dame Univ. of Utah CalPoly Project Description Florida A& M

6 .cive.wustl.edu.cive.wustl.edu Project Description Develop and share “hands-on” experiments for earthquake eng. Identical equipment at each site Experiment sharing through the web

7 .cive.wustl.edu.cive.wustl.edu Objectives Develop “hands-on” experiments Earthquake hazard mitigation Dynamics of structures Geotechnical engineering Experience with modern instruments Public/outreach activities

8 .cive.wustl.edu.cive.wustl.edu Hardware Shake Table 2 Story building 3 accelerometers Computer Data acquisition Pendant controller AMD (Optional)

9 .cive.wustl.edu.cive.wustl.edu Hardware Shake table Payload 25 lb Peak acc 1 g Peak vel 20 in/sec Freq. 0-20 Hz Dimensions 18x18 in Stroke +- 3 in Weight ~ 100 lb

10 .cive.wustl.edu.cive.wustl.edu Hardware

11 .cive.wustl.edu.cive.wustl.edu Hardware

12 .cive.wustl.edu.cive.wustl.edu Outcomes Experiments Demonstration of Non-Structural Seismic Hazards in the Home Dynamic Behavior of Simple Soil- Structure Systems Liquefaction Demonstration for the UCIST Shake Table K-12 Outreach Activities in Earthquake Eng.

13 .cive.wustl.edu.cive.wustl.edu Outcomes Experiments Tuning of a Vibration Absorber on UCIST Shake Table Determination of Natural Frequencies and Mode Shapes of Multi-Degree of Freedom Structures Earthquake-Resistant Bridge Competition for Introductory Eng. Students

14 .cive.wustl.edu.cive.wustl.edu Outcomes Experiments Small Shake Table Experiments and Comparison to Analytical Predictions Introduction to Dynamics of Structures

15 .cive.wustl.edu.cive.wustl.edu Outcomes

16 .cive.wustl.edu.cive.wustl.edu Outcomes

17 .cive.wustl.edu.cive.wustl.edu Outcomes Experiments used in Introduction to Civil Engineering Mechanics of Materials Laboratory Structural Dynamics Experimental Methods in Structural Dynamics

18 .cive.wustl.edu.cive.wustl.edu Outcomes Outreach activities Earthquake Awareness Weekend (WashU)

19 .cive.wustl.edu.cive.wustl.edu Outcomes Outreach activities K-12 outreach activities (Notre Dame)

20 .cive.wustl.edu.cive.wustl.edu Outcomes Research

21 .cive.wustl.edu.cive.wustl.edu Conclusions UCIST is a lab station for “hands on” experimentation in earthquake engineering Many experiments are already available Also, used for outreach and research

22 .cive.wustl.edu.cive.wustl.edu Future Work Measure the effects of UCIST in eng. education Online survey – beginning Spring ’02 Web statistics monitored Maintain, enhance and expand web site

23 .cive.wustl.edu.cive.wustl.edu.cive.wustl.edu.cive.wustl.edu ucist@cive.wustl.edu More Information


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