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Soil / Rock Anchor
A rock anchor resist forces by means of
corrosion protected steel bars or strands embedded into bedrock.
Geotechnical structures need anchors to counteract the uplift and other
forces acting on foundations. The threaded bar is bonded to the bedrock
socket wall or virgin soil by using high-strength grout (cement mixture).
After the anchors are constructed, the free-lengths are then post-tensioned,
but bolts are grouted the full length of the bar and cannot be
post-tensioned.
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A rock anchor or bolt can have very high load
capacities. Rembco has installed many different sizes over the past 25
years. The largest could hold a load up to 1,000 kips.
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Anchors: |
 Secure caisson
bottom against uplift |
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Stabilize slopes
and walls |
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Provide tiebacks
for bridges |
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Increase
stability of dams |
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Tension load
tests |
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Bolts: |
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Secure surfaces
in mines |
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Holds buildings
against lift |
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Stabilization of
steep slopes |
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Bases for guy
line toggles |
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Rock / Soil Anchors
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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Rembco