University Consortium of Instructional Shake Tables

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University Consortium of Instructional Shake
Tables

• Juan M. Caicedo

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Outline

• Project Description
• Objectives
• Hardware Description
• Outcomes
• Conclusions
• Future

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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

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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

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Project Description
University of Alaska Fairbanks University of
Hawaii
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Project Description

• Develop and share hands-on experiments for
  earthquake eng.
• Identical equipment at each site
• Experiment sharing through the web

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Objectives

• Develop hands-on experiments
• Earthquake hazard mitigation
• Dynamics of structures
• Geotechnical engineering
• Experience with modern instruments
• Public/outreach activities

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Hardware

• Shake Table
• 2 Story building
• 3 accelerometers
• Computer
• Data acquisition
• Pendant controller
• AMD (Optional)

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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

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Hardware
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Hardware
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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.

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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

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Outcomes

• Experiments
• Small Shake Table Experiments and Comparison to
  Analytical Predictions
• Introduction to Dynamics of Structures

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Outcomes
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Outcomes
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Outcomes

• Experiments used in
• Introduction to Civil Engineering
• Mechanics of Materials Laboratory
• Structural Dynamics
• Experimental Methods in Structural Dynamics

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Outcomes

• Outreach activities
• Earthquake Awareness Weekend (WashU)

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Outcomes

• Outreach activities
• K-12 outreach activities (Notre Dame)

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Outcomes

• Research

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Conclusions

• UCIST is a lab station for hands on
  experimentation in earthquake engineering
• Many experiments are already available
• Also, used for outreach and research

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Future Work

• Measure the effects of UCIST in eng. education
• Online survey beginning Spring 02
• Web statistics monitored
• Maintain, enhance and expand web site

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More Information
ucist_at_cive.wustl.edu