RESEARCH OPPORTUNITIES AT THE NEES PERMANENTLYINSTRUMENTED FIELD SITES

摘要

As part of the George E. Brown Jr. Network for Earthquake Engineering Simulation (NEES), twopermanently instrumented field sites for monitoring ground motion, pore water pressure generation,ground deformation, and soil-foundation-structure interaction (SFSI), were added to the NEES equipmentportfolio. The sites are the Wildlife Liquefaction Array (WLA) and the Garner Valley Downhole Array(GVDA); both are located in highly seismic areas of the southern California; both have histories ofmonitored earthquake responses; both are underlain by liquefiable layers; and both have been wellcharacterized. To engender ground deformation, the WLA site is adjacent to a 3-m high bank of the AlamoRiver. A reconfigurable, steel-framed structure has been constructed at the GVDA site and instrumentedwith sensors in the structure, foundation, and underlying soil to facilitate SFSI research. These field siteswill monitor responses generated by earthquakes and by active experiments using shakers. These sites willprovide test beds for new in-situ and non-invasive site characterization techniques and for development ofnew sensor technologies. Telepresence and teleparticipation capabilities will provide opportunities forcollaborative research and educational interaction. The continuous streaming of data to the NEES datarepository, ANSS, and local networks will provide ready access to the collected data.