Preventing Earthquake Disasters: The Grand Challenge in Earthquake Engineering A Research Agenda for the Network for Earthquake Engineering Simulation (NEES) (2003) / Chapter Skim
Currently Skimming:
Appendix A: The George E. Brown, Jr., Network for Earthquake Engineering Simulation
Appendix A: The George E. Brown, Jr., Network for Earthquake Engineering Simulation
Pages 133-147
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 133... ...
Appendixes
|
From page 134... ...
NEES equipment sites are slated to be operational
|
From page 135... ...
. This MRE, the first to be funded under the NSF engineering directorate, is intended to "provide a national resource that will shift the emphasis of earthquake engineering research from its current reliance on physical testing to integrated experimentation, computation, theory, databases, and model-based simulation" (from the NSF Web site "About NEED".
|
From page 136... ...
at Buffalo Large-Scale High-Performance Testing Facility Towards Real-Time Hybrid Seismic Testing, SUNY Buffalo These two projects will result in a versatile research facility, which will have two shake tables with 6 degrees of freedom. The tables will be able to contain specimens as long as 120 meters and weighing up to 100 metric tons.
|
From page 137... ...
. Upgrading, Development, and Integration of Next-Generation Earthquake Engineering Experimental Capability at Rensselaer's 100 Gton Geotechnical Centrifuge The upgraded centrifuge will include the following: · A two-dimensional (2-D)
|
From page 138... ...
plan for managing NEES To design, develop, implement, test, and make operational the Internet-based, national-scale high-performance network system for NEES, called the NEESgrid 1,999,907 0,000,000 Versatile High Performance 6,160,785 Shake Tables Facility Towards Real-Time Hybrid Seismic Testing Large-Scale High Performance 4,379,865 Testing Facility Towards Real-Time Hybrid Seismic Testing Development of a Biaxial Multiple 4,398,450 Shake Table Research Facility Upgrading, Development, and 2,380,579 Integration of Next Generation Earthquake Engineering Experimental Capability at Rensselaer's 100 G-ton Geotechnical Centrifuge System for Multiaxial Subassemblage Testing 6,472,049 NEES Geotechnical Centrifuge 4,614,294 Facility
|
From page 139... ...
Benson Shing, University of Colorado, Boulder Kenneth Stokoe, University of Texas, Austin John Wallace, University of California, Los Angeles Solomon Yim, Oregon State University Task/Phase II Equipment T Leslie Youd, Brigham Young University Harry Stewart, Cornell University Reconfigurable Reaction Wall-Based Earthquake Simulator Facility 4,268,323 Fast Hybrid Test Platform for 1,983,553 the Seismic Performance Evaluation of Structural Systems Large-Scale Mobile Shakers and 2,937,036 Associated Instrumentation for Dynamic Field Studies of Geotechnical and Structural Systems Field Testing and Monitoring of 2,652,761 Structural Performance Upgrading Oregon State's Multidirectional Wave Basin for Remote Tsunami Research 4,775,832 Permanently Instrumented Field Sites 1,944,423 for Study of Soil-Foundation-Structure Interaction Large Displacement Soil-Structure 2,072,716 Interaction Facility for Lifeline Systems James Ricles, Lehigh University Real-Time Multidirectional Testing Facility for Seismic Performance Simulation of Large-Scale Structural Systems Frieder Seible, University of California, San Diego Amr Elnashai, University of Illinois, Urbana-Champaign TOTAL Large High Performance Outdoor 5,890,000 Shake Table Facility Multiaxial Full-Scale Substructure 2,958,011 Testing and Simulation Facility 72,481,901 SOURCE: National Science Foundation.
|
From page 140... ...
A NEES Geotechnical Centrifuge Facility, University of California, Davis This facility will be upgraded to include the following: · Modification to enable operation up to 80 g; · Upgrades to the existing horizontal shaker; · One large hinged-plate container; · One biaxial horizontal-vertical shaker; · One 4-degrees-of-freedom robot, robot tools, and associated software, capable of installing and/or operating test devices; · Networked data acquisition systems with teleoperation and teleobservation capability; · Data visualization capabilities with a high-resolution projection system; · Ten strands of 20 dual-axis digital MEMS accelerometers; and · Topographic imaging and geophysical testing tools and methodologies. Reconfigurable Reaction-Wall-Based Earthquake Simulator Facility, University of California, Berkeley The facility will be designed to support the development of a new
|
From page 141... ...
Fast Hybrid Test Platform for the Seismic Performance Evaluation of Structural Systems, University of Colorado, Boulder The facility will incorporate high-speed actuators, a digital controller, a data acquisition system, computers, and simulation software for fullsize and large-scale models of wall, columns, frames, and subassemblies under hybrid testing. Load rates will be between 10 and 100 percent of that experienced during an earthquake, which is higher than the capabilities currently available in pseudodynamic tests.
|
From page 142... ...
having continuous to intermittent operation and a frequency range of 0.1 to 4.2 Hz; Two unidirectional eccentric mass vibrators with maximum force of 100 hips and a frequency range of 0 to 25 Hz; One linear inertial shaker with maximum force of 5 hips and programmable arbitrary force (or acceleration) time history over a frequency range of 0 to 60 Hz; · A wireless sensor and data acquisition system; · A cone penetration truck with a seismic piezocone, 20-ton hydraulic push capacity, side augers, and in situ soil vibration sensors; and · Networking equipment for real-time data acquisition, processing, and broadcasting.
|
From page 143... ...
Twenty channels of Vishay 2100 system strain gauge signal conditioning are available. These provide signal conditioning for force transducers and pressure gauges at the Wave Research Laboratory.
|
From page 144... ...
Phase II Awards Permanently Instrumented Field Sites for Study of Soil-FoundationStructure Interaction, Brigham Young University The project will augment and upgrade the instrumentation of two field sites with state-of-the-art technology for the study of dynamic ground response, deformation, and the resulting structural response, from both active shaking experiments and local and regional earthquake excitation of the sites. The two sites are the Garner Valley Array and the Salton Sea Wildlife Refuge Liquefaction Array.
|
From page 145... ...
Real-Time Multidirectional Testing Facility for Seismic Performance Simulation of Large-Scale Structural Systems, Lehigh University For this project, Lehigh University will design, construct, install, commission, and operate a real-time multidirectional testing facility for seismic performance simulation of large-scale structural systems. The equipment will be installed at the Advanced Technology for Large Structural Systems Engineering Research Center and will make use of the existing strong floor (372 m2 in surface area)
|
From page 146... ...
The experimental facility is also designed to support the development of new hybrid testing methods for multidirectional real-time testing of largescale structures, including hybrid testing of multiple substructures, where the substructures involved are at different geographic locations connected by the NEES network. Large High-Performance Outdoor Shake Table Facility, University of California, San Diego This project establishes a NEES large, high-performance outdoor shake table, which will be 7.6 m wide by 12.2 m long and have a single (horizontal)
|
From page 147... ...
The proposed MUST-SIM facility will develop modular, 6-degreesof-freedom loading and boundary condition boxes, which will allow for precise application of complex load and boundary conditions. The boxes, which will be 3.5 m x 1.5 m x 1.5 m and will house six actuators each, will be able to impose motions on the test structures to be determined from the results of concurrently running numerical models of the test specimen and the surrounding structure-foundation-soil system employing pseudodynamic testing methods.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.