40 YEARS OF FULL SCALE INFRASTRUCTURE TESTING AT A NATIONAL GEOTECHNICAL EXPERIMENTATION SITE: SAND SITE


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Abstract


A site at the Texas A&M University RELLIS campus near College Station, Texas, was dedicated to full-scale infrastructure testing in 1978. It was designated as a National Geotechnical Experimentation Site by NSF and FHWA in 1992. The site is made of 15 m of medium dense silty sand, within which most experiments took place, underlain by a deep layer of clay shale. The water table is approximately 7.5 m deep. Over the last 40 years, many full-scale instrumented experiments on infrastructure elements have been conducted at that site. The main projects include a box culvert within an embankment, spread footings of various sizes, drilled shafts with intentional construction defects, an anchored top down retaining wall, a top down deep-soil-mixing retaining wall, post grouted drilled shafts, vibro-driven steel piles, a drilled shaft embedded in an MSE wall and pushing on it, a tractor trailer truck crashing against a barrier on top of an MSE wall, a single unit truck crashing against a row of in line piles, and erosion in-situ tests. This paper describes each one of those projects and also presents the results and lessons learned from these full-scale infrastructure tests and associated soil tests; references to related reports are provided for further details regarding each project.


Keywords


embankment, shallow foundations, deep foundations, retaining walls, culverts, in-situ testing, laboratory tests, full-scale testing, infrastructure elements, vehicle crash testing, sand

Citation


BRIAUD, J. (2021). 40 YEARS OF FULL SCALE INFRASTRUCTURE TESTING AT A NATIONAL GEOTECHNICAL EXPERIMENTATION SITE: SAND SITE, Vol. 6, Issue 3, p.25-53. doi: 10.4417/IJGCH-06-03-02




DOI: http://dx.doi.org/10.4417/IJGCH-06-03-02

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