Existing ground anchor technology and installation procedures
In 1979, the U.S. Department of Transportation Federal Highway Administration (FHWA) Office of
Technology Applications authorized a permanent ground anchor demonstration project. The
objective of the project was to provide highway agencies with adequate information to promote
routine use of permanent ground anchors and anchored walls. The purpose of the demonstration
project was to:
(1) study existing ground anchor technology and installation procedures;
(2)
determine areas where additional work was required;
(3) update existing technology;
(4) develop a
basic design manual;
(5) solicit installations on highway projects. Between 1979 and 1982, two
FHWA research reports were completed (“Permanent Ground Anchors” FHWA Report Nos.
FHWA-RD- 81-150, 151, and 152 and “Tiebacks” FHWA Report No. FHWA-RD-82-047) and pilot
test projects were begun by highway agencies.
A design manual was developed by FHWA in 1984,
3
which was updated in 1988 (FHWA-DP-68-1R, 1988), as part of the demonstration project.
During
the demonstration project, five U.S. highway projects with permanent anchored systems were
instrumented and performance data were gathered (see FHWA-DP-90-068-003, 1990). Today,
ground anchors and anchored systems have become an integral component of highway design in the
U.S.
From:https://www.fhwa.dot.gov/engineering/geotech/pubs/if99015.pdf
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