Jalila 2014 LANS Oral Presentation (1)
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Transcript of Jalila 2014 LANS Oral Presentation (1)
Experimental Testing and Analysis of a Beam-Column
Connection on Liquefiable Soil
Jalila Elfejji, Dr. Shideh Dashti, Dr. Abbie B. Liel, Juan Carlos OlarteUniversity of Colorado at BoulderUniversity of Wisconsin-Madison
July 26, 2014
Process of Liquefaction
Niigata (2004) Uplifting of ground due to Liquefaction Niigata (1964) Tilting due to Liquefaction
Objective: Design and fabricate prototype beam-column connection of 3-story frame
Complete Beam-Column System Design
Beam-Column Connection Fuse
Pinned Column-Frame Connections
SAP2000 Beam-Column Connection with Fuse
I= 1907.55 mm^4 b=12.29 mm
Parallel Axis10mm
1.6mmd
Parallel Axis Theorem
Moment of Inertia
Deformation Results of Beam-Column System on SAP2000 and OpenSees
SAPBeam-Column
SAPBeam-Column w/Frame
OpenSees
Tip Displacement(mm)
9.66 9.66 9.6
Tip Rotation(rad)
0.046 0.046 0.045
Connection Rotation(rad)
0.013 0.013 0.012
Instrumentation of Beam-Column System
Strain Gauge
Linear Variable Differential Transformer
(LVDT)
Expected Moment-Rotation Results and Fuse Damage
source: Soil Dynamics and Earthquake Engineering (2012)
Future Centrifuge Testing
•
Structure
Soil
Ground Motion
Mitigation source: Performance of Buildings on Liquefiable Soils: Evaluation and Mitigation (2013)
Acknowledgments
Many thanks to:
Dr. Shideh Dashti
Dr. Abbie B. Liel
Juan Carlos Olarte
SMART Program Funding: NSF HRD 0639653