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Earth / Rock Anchors
Earth or rock anchors generally consist
of steel elements (bars or strands) grouted in a drilled hole. The bars or
strands are subsequently tensioned. This provides lateral or vertical force
to resist movement of a retaining structure. Anchors are often used for
excavation support, or as a part of permanent retaining walls, or to resist
up-lift forces on foundations. Rembco uses rock anchors to stabilize slopes
and walls, provide tiebacks for bridges, stabilize dams, and secure caisson
bottoms.
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Anchors and bolts can have very high load
capacities. over 25 years, Rembco has installed many different sizes and
lengths. The largest had a working load of 1,000 kips.
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Bolts: |
 Secure surfaces
in mines |
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Holds buildings
against lift |
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Stabilization of
slopes |
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Bases for guy
toggles |
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Supports for
stairs |
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Soil / Rock Anchor
Installation Sequence: |
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Drill a hole through unstable material and into stable material. Casing may
be used in collapsing formations. |
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Inject grout from the bottom of the hole to flush contaminants from the bond
zone. |
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Insert threaded bar (steel tendon) with a sheath that prevents bonding to
unstable material. |
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After the grout cures, install a bearing plate and locking nut. |
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Pull
the tendon to a prescribed post-tension load and lock in place to limit
future movement. |
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