University of California, Los AngelesField Testing & Monitoringof Structural Performance Performance

NSF NEES Awardee Meeting September 28, 2001

Project TeamUCLA Project Participants John W. Wallace PI Structures Joel P. Conte Co-PI Structures Deborah Estrin Co-PI Information Systems Patrick J. Fox Co-PI Soils Jonathan P. Stewart Co-PI Soils

Daniel Whang Project Researcher/Manager

Eunjong Yu Ph.D. Student

Structural Engineering Technology Laboratories (SETEL)

UCLA UC Irvine UCSD Caltech USC

Project Overview

UCLA

WirelessIP

Cloud

System Overview

ConcentrationPoint

Building

Central RecordingSystem

Satellite

Vibration Source

Command CenterData acquisition and control

UCLA

Satellite

Instrumented Building(structure, foundation, soil) e.g., wood, masonry, steel, RCBridge, dam, other

Web broadcastTele-observation

Equipment Overview Vibration Equipment

– Eccentric mass shakers (3)0 to 4.2 Hz Peak Force of 20 kips (1)0 to 25 Hz Peak Force of 100 kips (2) Independent or synchronized (higher modes, torsion)

– Linear inertial shaker (1) Arbitrary force histories with peak force of 5 kips

Sensors (~150)– Accelerometers (structure and soil vibrations)

Bandwidth: DC to 200 Hz Full scale range: +/-0.25g to +/-4g

– Potentiometers, LVDTs, Fiber Optics, Strain gauges DC LVDTs with +/- 3 inches (Elotek Systems, Inc.)

Equipment OverviewEquipment Overview

Cone Penetration Rig– Subsurface characterization & installation of geo

sensors Wireless Data Transmission and Data Acquisition

Antelope software UNIX-based Relational database for efficient storage

– Digitizers and routers/antennas (Kinemetrics, Q330) Low power demand

– Satellite uplink 1.28 Mbits/s data transmission

Project Timeline Year 1 & beginning of Year 2

– Cone Penetration Rig, Eccentric Shakers– Integration: mass shakers with linear shaker control, data

acquisition with Antelope software– Mobile trailer design– Pilot studies for wireless data acquisition/control – Linear inertial shaker (start of Year 2)

Years 2 & 3– Expanded pilot studies (laboratory and campus)– Develop (geo) and purchase of sensors – Bulk purchases & System integration– Web based documentation and training

Year 4– Complete purchases and system integration– Field pilot studies & Satellite transmission system

StatusStatus

Cone Penetration RigCone Penetration RigHogentogler (Columbia, MD)Hogentogler (Columbia, MD)– Approved and Delivered, August 7, 2001Approved and Delivered, August 7, 2001

Eccentric Mass Shakers Eccentric Mass Shakers ANCO (Boulder, CO)ANCO (Boulder, CO)– Approved and orderedApproved and ordered– Anticipated delivery date ~ Nov. 1Anticipated delivery date ~ Nov. 1

Sensors & Wireless Data Acquisition SystemSensors & Wireless Data Acquisition SystemKinemetrics (Pasadena, CA)Kinemetrics (Pasadena, CA)– NSF approval received, Sept 22, 2001NSF approval received, Sept 22, 2001

Linear Mass ShakerLinear Mass Shaker– Detail specifications under developmentDetail specifications under development

LAN Network

Gigabit backbone is available Gigabit backbone is available within School of Engineering. within School of Engineering. Connection to NEES Connection to NEES workstation is anticipated in workstation is anticipated in the Fall 2001.the Fall 2001.

Field operation: use and Field operation: use and integration of satellite integration of satellite uplink/downlink with uplink/downlink with NEESgrid. Potential to use ISP NEESgrid. Potential to use ISP at field site for web at field site for web connectivity?connectivity?

Critical Questions - SICritical Questions - SI

Many of the relevant questions have already been asked Many of the relevant questions have already been asked by U. of Minnesota. Specific questions pertinent to by U. of Minnesota. Specific questions pertinent to UCLA are:UCLA are:

Support of Antelope (proprietary data acquisition Support of Antelope (proprietary data acquisition software, Kinemetrics)?software, Kinemetrics)?

Field web/backbone connectivity (satellite, ISP)Field web/backbone connectivity (satellite, ISP)

Critical Questions - CDCritical Questions - CD

Who determines priorities on equipment/facility usage?Who determines priorities on equipment/facility usage? Who is responsible for the shipping/insurance costs Who is responsible for the shipping/insurance costs

associated with the field-testing equipment?associated with the field-testing equipment?– e.g., fabrication of shipping crates will be required; e.g., fabrication of shipping crates will be required;

does the Consortium purchase these, and then we does the Consortium purchase these, and then we reimburse through user fees?reimburse through user fees?

To what extent will the NEES equipment sites have the To what extent will the NEES equipment sites have the ability to insert special clauses on equipment usage into ability to insert special clauses on equipment usage into contracts?contracts?– e.g., recall of field-testing equipment for priority e.g., recall of field-testing equipment for priority

usage, such as EQ aftershock monitoring)usage, such as EQ aftershock monitoring)

Critical Questions - CDCritical Questions - CD

How is potential teaching use to be prioritized versus How is potential teaching use to be prioritized versus research use?research use?

How soon will data storage/retrieval protocols be How soon will data storage/retrieval protocols be established and how will these be reconciled with the established and how will these be reconciled with the various data acquisition systems and other protocols various data acquisition systems and other protocols being used?being used?– e.g., Labview vs. Kinemetrics Antelope software for e.g., Labview vs. Kinemetrics Antelope software for

data acquisition. data acquisition. – e.g., PEER database protocole.g., PEER database protocol