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Main Project Sponsors and Contributors Research Team Blind Prediction Committee Steve Mahin, UC Berkeley José I. Restrepo, UC San Diego Ian Buckle, UN.

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Presentation on theme: "Main Project Sponsors and Contributors Research Team Blind Prediction Committee Steve Mahin, UC Berkeley José I. Restrepo, UC San Diego Ian Buckle, UN."— Presentation transcript:

1

2 Main Project Sponsors and Contributors

3 Research Team Blind Prediction Committee Steve Mahin, UC Berkeley José I. Restrepo, UC San Diego Ian Buckle, UN Reno Matthew J. Schoettler, UC San Diego Francesco Carrea, UC San Diego David Duck, UC San Diego Gabriele Guerrini, UC San Diego Elide Pantoli, UC San Diego Mike Keever, Caltrans Mark Mahan, Caltrans Cliff Roblee, Caltrans Tom Shantz, Caltrans Phil Yin, FHWA Steve Mahin, Chair José I. Restrepo Vesna Terzic, UC Berkeley Matthew J. Schoettler NEES@UCSD & UCSD Personnel Dan Radulescu Andy Gunthardt Robert Beckley Darren McKay Steve Morris Lony Rodriguez Alex Sherman Jeff Rivor Brad Durant Matteo Orio

4 Overall Objectives of the Test Program Observe and document the nonlinear dynamic response up to collapse of a full-scale bridge column designed as per Caltrans SDC Observe scale effects with shake table testing of columns being carried out at UC Berkeley Landmark test offering practitioners and researchers the chance to blindly predict the response of the test structure, to investigate epistemic uncertainty in nonlinear modeling and to enhance future modeling techniques

5 Test Specimen Features and Instrumentation 4ft diameter by 24 ft tall column 260 ton inertial mass 272 sensors sampled at 240 Hz 3 GPS-50 Hz differential stations August 4 September 28 56 days

6 Blind Prediction Earthquake Sequence Loma Prieta 1989 Kobe 1995 Design EQ LP

7 EQ5 Takatori (80%)

8 Blind Prediction Data Measured unit weight: 150 pcf Concrete Hoops Longitudinal Reinforcement

9 Questionnaire Two Categories: Researchers and Engineering Professionals 41 entries from 14 countries

10 Responses Max. Displacement (mm)

11 Responses Max. Total Acceleration (g)

12 Responses Max. Bending Moment (kN-m)

13 Responses Max. Axial Compression (kN) Static

14 Blind Prediction Winners Researchers: ……………………………………………… Eng. Professionals: ……………………………………………… Zhe Qu, Tokyo Institute of Technology, Japan Bill Tremayne, Holmes Culley, San Francisco Lawrence Burkett, Rutherford & Chekene, San Francisco

15 Certificates of Distinction António Arêde & team, University of Porto, Portugal Otton Lara & team, Escuela Superior Técnica del Litoral, Ecuador Farzin Zareian & team, UC Irvine Engineering Professionals Researchers Eric Kelley, Parsons Brinckerhoff, Inc. Andreas Schellenberg, Rutherford & Chekene

16 EQ8: Takatori 100%

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