“a multi high performance shake table...

Joint UCSDJoint UCSD--UBUB--UNRUNRShake Table Training WorkshopShake Table Training Workshop

Large Scale Structures LaboratoryNEES@University of Nevada, Reno

“A Multi High Performance Shake Table Facility”“A Multi High Performance Shake Table Facility”

Sherif Elfass, Ph.D., P.E., PMPResearch Assistant Professor

Site Operations Manager

NEES@UNevada‐RenoNEES@UBuffaloNEES@UC San Diego

Shake Table Training Workshop 2010 – San Diego, CA

Earthquake Research at UNREarthquake Research at UNREarthquake Research at UNREarthquake Research at UNR

• The UNR Earthquake Engineering Program is q g g gconducted within the Center for Civil Engineering Earthquake R hResearchof theD t t f Ci il d E i t lDepartment of Civil and Environmental Engineeringwithin thewithin theCollege of Engineering


CCEERCCEER--BackgroundBackgroundCCEERCCEER BackgroundBackground

• Established 1981.

• One of the first university-based research centers in the U S to focus on experimentalcenters in the U.S., to focus on experimental performance of bridges, for seismic and non-seismic loads.

• Since diversified to other structural and geotechnical systems such as piping systemsgeotechnical systems, such as piping systems, non-structural components, protective systems for buildings, liquefaction studies, pile group modeling


modeling…

PersonnelPersonnelPersonnelPersonnel•Ian Buckle – Laboratory Director •Sherif Elfass – SOM

Academic Faculty NEES and LSSL

Ian Buckle Laboratory Director

•Ahmad Itani

•E “Manos” Maragakis – Dean COE

Sherif Elfass SOM

•Patrick Laplace - LSSL

•Chad Lyttle – LSSL

•Gokhan Pekcan

•Keri Ryan

David Sanders

•Kelly Lyttle– Program Coordinator

•Todd Lyttle - LSSL

•Robert Nelson LSSL•David Sanders

•M “ Saiid” Saiidi

•Raj Siddarthan

•Robert Nelson- LSSL

•Rodney Porter- IT

j


Significant MilestonesSignificant MilestonesSignificant MilestonesSignificant Milestones•1981 CCEER Established1992 C t ti f LSSL•1992 Construction of LSSL

•1996 Commissioning of Two MTS Uniaxial Tables•2000 LSSL Expansion (to 8400 ft2)( )•2002 NEES Phase 1 Award (Early Adopter)•2002 Three MTS Bi-Axial Shake Tables Operational•2004 Beginning of NEES Operation (NEESinc)2004 Beginning of NEES Operation (NEESinc)•2009 Commissioning of the 4th multi-axis (6DOF)

Shake Table20•20xx ….


Facility OverviewFacility OverviewFacility OverviewFacility Overview• 8,400 sq ft strong floor

high-bay laboratory

3 50 t h k t bl• 3 x 50 ton shake tables (biaxial, relocatable… )

• Multi-axis 20-ton (6DOF) u a s 0 o (6 O )shake table (before the upgrade)Bidi ti l i• Bidirectional mass rig


Facility OverviewFacility OverviewFacility OverviewFacility Overview• 1 x 220 Kip load frame• 8 x servohydraulic• 8 x servohydraulic

actuators (22-700 Kip, 6-48 in stroke)

• 1 x 60 ton laminar soil box 1 x inertial mass rig• 1 x inertial mass rig

• 25 reaction blocks, with prestressed tie downsp

• Modular DAQ• Sensors equipped with

Shake Table Training Workshop 2010 – San Diego, CATEDS

Equipment SpecificationsEquipment SpecificationsS ( )S ( )Biaxial Shake Tables (3)Biaxial Shake Tables (3)


Equipment SpecificationsEquipment Specifications( O ) S( O ) SMultiMulti--axis (6DOF) Shake Tableaxis (6DOF) Shake Table

Existing Table Upgraded Table


EXISTING UPGRADEDPlaten Weight 14,000 lbs 14,000 lbsPlaten Surface 9.3 feet x 9.3 feet 9.3 feet x 9.3 feetHole Grid Pattern 1-8 at 12" O.C. 1-8 at 12" O.C.

DescriptionMechanical Table

Platen Depth 4 feet 4 feetTable Height 7.0 feet (84 inches) 7.0 feet (84 inches)Floor Area 23.5 x 19 feet 23.5 x 23.5 feetQuantity 1 2Dynamic Stroke (DA) 24 inch 24 inchStatic Stroke (DA) 25 inch 25 inch

Actuators X Direction

Static Stroke (DA) 25 inch 25 inchForce Capacity (each) 55 kips 55 kipsValving 180 gpm 256 valve 180 gpm 256 valveQuantity 2 2Dynamic Stroke (DA) 6 inch 24 inchStatic Stroke (DA) 6.25 inch 25 inch

Y Direction

Force Capacity (each) 55 kips 55 kipsValving 90 gpm 256 valves 180 gpm 256 valveQuantity 4 4Dynamic Stroke (DA) 8 inch 8 inchStatic Stroke (DA) 11.5 inch 11.5 inch Force Capacity (each) 35 kips 35 kips

Z Direction

Force Capacity (each) 35 kips 35 kipsValving 90 gpm 256 valves 90 gpm 256 valves

Nominal Payload At 1 g acceleration 40 kips 95 kipsDynamic Capacity at 1 g 40 kip payload 95 kip payloadDynamic Stroke (DA) 24 inches 24 inchesPeak Velocity bare table 60 in./sec 60 in./sec

X DirectionPerformance

Dynamic Capacity at 1 g 95 kip payload 95 kip payloadDynamic Stroke (DA) 6 inches 24 inchesPeak Velocity bare table 35 in./sec 60 in./secDynamic Capacity at 1 g 125 kip payload 125 kip payloadDynamic Stroke (DA) 8 inches 8 inchesP k V l it b t bl 55 i / 55 i /

Y Direction

Z Direction


Peak Velocity bare table 55 in./sec 55 in./sec

TelepresenceTelepresence and Collaboration Portalsand Collaboration Portalspp

• 14 Cameras• GPS SMPTE Time Stamping for Synchronization• Video ConferencingVideo Conferencing• Webcast Capabilities• Data Streaming

Data Vis ali ation• Data Visualization• Tele-observation

• Workspace and computer resources for visiting researchers


Strong Floor “Static” ResearchStrong Floor “Static” ResearchStrong Floor Static ResearchStrong Floor Static Research


Single Table ResearchSingle Table ResearchSingle Table ResearchSingle Table Research


Single Table “Service To Industry”Single Table “Service To Industry”Single Table Service To IndustrySingle Table Service To Industry


Multiple Table ResearchMultiple Table ResearchMultiple Table ResearchMultiple Table Research


Future ResearchFuture ResearchFuture ResearchFuture Research


Innovation / TheInnovation / The FutureFutureInnovation / The Innovation / The Future…Future…

•Hybrid and Simulation-in-the-Loop?

•Connect the Reno-Buffalo-UCSD shake tables together?!s a e tab es toget e


Find us on the WebFind us on the Web

http://nees.unr.eduShake Table Training Workshop 2010 – San Diego, CA

http://nees.unr.edu

Thank youThank youThank youThank you


“a multi high performance shake table...

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