Transcript
The UB-NEES Versatile High Performance Testing Facility A.M. Reinhorn, M. Bruneau, M. Constantinou, A.S. Whittaker, S. Thevanayagam, M. Sivaselvan, X. Shao, J. Hanley, M. Pitman, T. Albrechcinski Department of Civil, Structural, and Environmental Engineering, University at Buffalo
ABSTRACT The intent of the NEES Equipment Site at UB (SUNY) is to develop the most versatile earthquake engineering research facility possible, designed to provide testing capabilities that can revolutionize the understanding of how very large structures react to a wide range of seismic activity, even when tested to complete failure. Under NEES, the existing Structural Engineering and Earthquake Simulation Laboratory (SEESL) facility* received $21.2 million grants ($11.0M form NSF, $9.0M from SUNY, $1.2M form Department and Industries) for expansion that includes the addition of dual, movable, six-degrees-of-freedom shake tables, a large reaction wall, a significantly expanded strong floor area, high-performance dynamic and static actuators, and associated hydraulic and control systems, and networked equipment with capabilities of teleoperation and teleobservation. The facility is now capable of testing full or large-scale structures using static or dynamic loading. The use of modern techniques such as Fast Hybrid Pseudo-Dynamic, Effective Force, and Real-Time Dynamic Hybrid testing are possible, along with conventional Static, Quasi-static, and Dynamic Force techniques. The Real-Time Dynamic Hybrid Testing (RTDHT) is a new form of testing being explored at UB in which shake table and/or dynamic force experiments on substructures are combined in real-time with computer simulations of the remainder of the structure. This provides a more complete picture of how earthquakes would affect large systems, including buildings and bridges, without the need to physically test the entire structures.
EXPANSION OF EXISTING LAB (SEESL) •13,000 sq.ft expansion of lab area to 27,000 sq.ft. •3,400 sq. ft. additional strong floor to 6400 sq.ft. •1,800 sq. ft. reaction wall (60 ft long 30 ft high) •120 ft. long shake table trench •40-ton overhead crane •1600 gpm Hydraulic Power Supply
DUAL SIX DEGREES OF FREEDOM RELOCATABLE SHAKE TABLES A set of two movable, high-performance, 6 degrees-of-freedom 50 tons capacity shake tables. It will be possible to easily and quickly reposition the shake tables in order to accommodate models of various lengths. Together, the tables can host specimens weighing up to 100 metric tons and measuring up to 125 feet, and subject them to fully in-phase or totally uncorrelated dynamic excitations. Table size:3. 6 meter x 3.6 meter Maximum specimen mass: 50 ton maximum / 20 ton nominal Maximum Overturning Moment:46 ton meter Maximum Off Center Loading moment:15 ton meter Frequency of operation: .1~50 hertz nominal/100 hertz maximum Nominal Performance: X axis Y axis Z axis: •Stroke:±.150 m ±.150 m ±.075 m •Velocity: 1250 mm/sec 1250 mm/sec 500 mm/sec •Acceleration:±1.15 g ±1.15 g ±1.15 g (w/20ton specimen) Controllers : MTS469 with Adaptive Controls Control Interface: MTS STEX 2004
* The NEES laboratory at the University at Buffalo is a part of the Structural Engineering and Earthquake Simulation Laboratory (SEESL) of the Department of Civil, Structural, and Environmental Engineering and which is also one of the laboratories affiliated with the Multidisciplinary Center for Earthquake Engineering Research (MCEER).
Structural Engineering and Earthquake Simulation Laboratory
The UB-NEES Versatile High Performance Testing Facility (cont’d)
LARGE SCALE SERVOHYDRAULIC ACTUATORS Another key element of the SEESL upgrade is the integration of three high-performance dynamic actuators (having ±1000 kN capacity, ±500mm stroke, 1.0 m/s max. velocity, and 800gpm servovalves), and two static ±2000 kN ±500mm stroke actuators. A flexible controller system is included with software to conduct in addition to quasi-static step-by-step testing also pseudo-dynamic testing. Source code is included such that more complex structural configurations, higher levels of substructuring, and other more advanced formulations of pseudo-dynamic testing can be developed and implemented. A digital control system also provide the fully flexible platform needed to develop new approaches in structural testing using real-time control, such as the RTDHT system or the effective force control technique (EFCT).
REAL TIME DYNAMIC HYBRID TESTING SYSTEM The new UB-NEES expansion facilitates use of modern testing techniques, such as Real-Time Dynamic Hybrid Testing and Fast Pseudo-Dynamic Hybrid Testing, along with conventional Static, Quasi-static, and Dynamic Force techniques. The new form of dynamic substructure testing, Real-Time Dynamic Hybrid Testing developed at UB with the new equipment, combines shake table and/or dynamic force experiments of substructures with real-time computer simulations of the remainder of the structure. This provides a more complete picture of how earthquakes would affect large systems, including buildings and bridges, without the need to physically test the entire structures. The system at UB uses an in-house developed parallel computing approach with a SCRAMNET link providing shared memory and asynchronous operations. The systems operates in FORCE CONTROL and is capable to implement EFFECTIVE FORCE Technique, FAST PSEUDO-DYNAMIC HYBRID Technique as well as REAL TIME DYNAMI HYBRID technique Optional
Optional
Computationa l Substructure MTS Actuator Controller (STS) Network Sim ulator
General Purpose Data Acquisition System
Real-time Simulator
Data Acquisition
Shake T able
SCRAMNET I
Structural Actuator
Physical Substructur
Physical Substructur
MTS Hydraulic Power Controller (HPC)
Computationa l Substructure
Compensation Controller xPC Target
SCRAMNET II
Ground/Shake Table MTS Shake Table Controller (469D)
CONTROL OF LOADING SYSTEM
Hybrid Testing
LAMINAR GEOTECHNICAL BOX
HYBRID CONTROLLER UB-NEES NODE
Reaction Wall
5.0x2.75x6.2m (85 cubic meter maximum capacity) Modular Multilayer-Laminate-Bearing Design; Simulate 2-D Ground Response for Soil-Foundation-Structure Interaction Studies At/or Near Full Scale 1-g Geotechnical Studies on Shake Table 1-g Geotechnical Studies on Strong Floor
Strong Floor Fast Actuator (100-200 ton)
2D-Bearings
NETWORK FOR SIMULATION, TELEOPERATION AND TELEPARTICIPATION Simulation and Modeling
INSTRUMENTATION AND OBSERVATION
EXPERIMENTAL INFORMATION
DC, AC and Other Signal Conditioners
CONTROLLER
VIDEO
DATA COMPRESSION
INFRARED
NEES CollaborationRoom
Retractable, Ceiling Mounted Hanging Mic. (x5)
DATA SELECTION
CPU
LOCAL
16 Chnl 16 Bit A/d 4 Chnl 16 Bit D/A
16 Chnl 16 Bit A/d 4 Chnl 16 Bit D/A
Dell Precision 650
Dell Precision 650
Standalone PC Based Data Acquisition (Lab Floor - existing) x4
GPIB
N.I. GPIBENET100
Control PC TCS/PL660/GPIB
Control PC TCS/PL660/GPIB
Control PC TCS/PL660/GPIB
Dell Precision 650
Dell Precision 650
Dell Precision 650
Dell Power edge 2650 DCDAQ.NEES.BUFFALO.EDU IP: Domain Controller Apllication Server Data Storage
Dell Power Edge 2650 DCSIM.NEES.BUFFALO.EDU IP: Domain Controller Web Services Backup Data Storage UB NEES Web Services
Dell Power Edge 2650 TPM.NEES.BUFFALO.EDU IP: Telepresence Server Video Archiving
Dell Power Edge 2600 JIGABIT-NEES.BUFFALO.EDU MCEER Student Web Services Email Services Struct Dynamics Domain server
Dell Power Edge 2650 POP.NEES.BUFFALO.EDU IP: NEES Point-Of-Presence Security Administration
SPECIMEN
MODEL BASE FUSION
AND GEOMETRY
DATA SELECTION
MODEL IDENTIFICATION
DISTANCE
DATA COMPRESSION
MODEL ADAPTATION
STRENGTH
DATA TRANSFER
COMPRESSION
Nortel Networks Bay Stack 5510-48T x5
USERS NETWORK Local (UB-NEES Provided) 100 mbps Switch (Control Room)
:
100 mbps
CONTROLLER
POINT SENSORS SHAKING TABLE
MOTION
FORCE
TEMPERATURE
:
DATA STREAM
Dell Precision 650
1000 mbps
TELESELECTION
TELEPROCESSING
DVD
DVD
Large Format Plotter
1200 DPI Color Laser Printer
1200 DPI Laser Printer x4 TapeBackup/ Archival Array
Distributed Print and Backup Services (Accessible from UB-NEES Windows Server 2003 Domain)
MTS FlexTest Control System
1000 mbps
EXPERIMENT CONTROL LOGIC FEEDBACK SYSTEMS
TELEGUIDANCE
FlexTest #1 GUI
Dell Precision 650 FlexTest GT Real Time Controller
DATA STORAGE
DATA COMPRESSION
` FlexTest #2 GUI
1000 mbps
100 mbps
DATA SELECTION
CONTROL SYSTEMS FEEDFORWRD AND FEEDBACK TELEADJUSTMENT
DVD
DVD
:
100 mbps
DVD
: :
DVD/ROM BackupArray
100 mbps
` Table #2 STEX Dell Precision 650
Table #1 STEX Dell Precision 650
1000 mbps
TELE-RECORDING
REMOTE/TELE OPERATIONS
AUTORIZATION
NETWORK MANAGER
Structural Simulator GUI
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`
`
`
Table #1 Controller GUI
Table #2 Controller GUI
Structural Control Host GUI
Master Hydraulic Controller
Dell Precision 650
Dell Precision 650
Dell Precision 650
Dell Precision 650
Structural Test System MTS 469 D Real Time Controller
Hydralic Power MTS 469 D Real Time Controller
Table #1 MTS 469 D Real Time Controller
Table #2 MTS 469 D Real Time Controller
Scramnet 1 (MTS)
MTS Shaking Table Control System
Fig.3. Functional diagram of SEESL – Model based adaptation through hybrid testing and computing (shadowed areas indicate new equipments or components)
Scramnet 1 (MTS)
MTS Structural Control System
UB Realtime Force Controller
UB Realtime Structural Simulator
UB Realtime Data Acquisition
ScramNet 2
MTS Interfacing and Hydraulic Control
UB-NEES Hybrid Control and Interfacing Network
Structural Engineering and Earthquake Simulation Laboratory
Crestron Control System
VGA
Au
dio
Video & Audio Matrix Switcher
Twisted Pair Low Voltage Signal
CT-1000 LCD Control Panel
Low Voltage Control
80"x60" Projection Screens (x2) w ol Lo ) Contr down p& nual Ma ge (u Volta Ceiling Mounted LCD Feedback Monitor
VGA
VGA
S-Video
Pan/Tilt/Zoom 1-2 TB NAS Raid Array (NEES Data Archive)
MEASUREMENTS DATA STREAM
Video Scaler
Amp
VGA
Video Scaler
A VG
Sony EVI-D30 Camera (x2)
REMOTE OF PROPERTIES
Video Scaler
VCR
CPU/RAM
GPIB
N.I. GPIBENET100
Visualizer
S-Video
Data Acquisition, Processing and Reporting (distributed)
NEES Telepresence Room
Wireless Reciever
Audio
S-Video
Pacific & Megadac GPIB Control PC's (Lab Floor & Distributed Locations)
Pacific 6000 Series 6032 Amplifiers/ Digitizers 256 Channels
ADC RAM
DISPLAY + OUTPUT
Wireless Wireless
Wireless Handheld Mic. (x2)
Phone line IR Remote Control
VGA
Video Audio
Polycom VS4000
77.5" Digital Whiteboard
VG Au A dio
A VG
Network-Enabled Scanner
1200 DPI Laser Printer
l ica ys Ph
SYSTEM
DATA STREAM
Simulation and Modeling
File, Application & Authentication Services Optim Megadac
VIDEO SENSORS (REMOTE)
Simulation and Modeling
SYSTEM INFORMATION CENTER
MODEL BASED PROCESSING (KNOWLEDGE ACCUMULATOR)
GLOBAL IMAGE/ LOADING
Simulation and Modeling
NEES Collaboration Room and Distributed Locations
Audio
EXPERIMENTATION SETUP
Wireless Label Mic. (x2)
Temp
Sensors and Legacy Signal Conditioning
Analog Sensors & Data Path
EXPERIMENT CONTROL
Force
Low Level (millivolt) Data
bluethoot
Veloc
EXPERIMENTAL)
Low Voltage Control
Displ
USERS COOPERATION
(ANALYTICAL OR
VGA
Accel
PRETEST MODEL
Podium Webcast Computer
Toshiba TLP-T72OU Projectors (x3) W ire
less
Computer w/DVD
