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FACILITY OVERVIEW


NHERI@UTexas contributes unique, literally one-of-a-kind, large, mobile dynamic
shakers and associated instrumentation to the study and development of novel,
in-situ testing methods that can be used to both evaluate the needs of existing
infrastructure and optimize the design of future infrastructure, such that our
communities become more resilient to earthquakes and other natural hazards. The
proposed NHERI@UTexas equipment resources were primarily established with
funding from the National Science Foundation (NSF) under the George E. Brown,
Jr. Network for Earthquake Engineering Simulation (NEES) program. These
equipment resources have served the earthquake engineering community for over 10
years under the name of NEES@UTexas. NEES@UTexas was established as an
experimental equipment site that specialized in dynamic in-situ testing using
large-scale mobile shakers. All equipment of NEES@UTexas is now proposed for use
by NHERI@UTexas. This equipment includes: (a) five large dynamic shakers that
can be used as mobile, wide-band dynamic sources for excitation of geotechnical
and structural systems, (b) a tractor-trailer rig used to transport the four
largest shakers, (c) a field supply truck for refueling and field maintenance of
the mobile shakers, (d) an instrumentation van that houses state-of-the-art data
acquisition systems and electrical power generation capabilities, (e) a field
instrumentation trailer that has air-conditioned work space and electrical power
generation capabilities, and (f) an extensive collection of field
instrumentation, DAC systems and a wide range of numerous sensors that are used
to measure vibrational motions and pore water pressures.

The types of laboratory simulations and tests enabled by the NHERI@UTexas
include:

 1. performing deeper, more accurate, higher resolution, 2D/3D subsurface
    geotechnical imaging,
 2. characterizing the nonlinear dynamic response and liquefaction resistance of
    complex geomaterials in situ, and
 3. developing rapid, in-situ methods for structural health monitoring and
    soil-foundation-structure interaction (SFSI) studies.

 

View more NHERI@UTexas videos on the DesignSafe-CI YouTube Channel:

 * 2D/3D Subsurface Geotechnical Imaging
 * Characterizing Liquefaction Resistance of Fine Sands in Situ
 * Rapid, In-Situ Methods for Structural Health Monitoring and
   Soil-Foundation-Structure Interaction (SFSI) Studies — Buildings
 * Rapid, In-Situ Methods for Structural Health Monitoring and
   Soil-Foundation-Structure Interaction (SFSI) Studies — Bridges

 * 

The UT Austin NHERI Experimental Facility is supported by a grant from the
National Science Foundation (#2037900).