Types of Ground Anchors
Nov 09, 2022| Types of Ground Anchors
This type anchors mostly suitable in rock strata and very stiff to hard cohesive soil deposits using either rotary drilling or hollow-stem auger methods. Tremie (gravity displacement) methods are used for grouting the anchor in a straight shaft borehole.
This type of anchor is most suitable for weak rock strata and coarse granular soils. This anchor type is also used in fine-grained cohesionless soils. In that grout is injected into the bond zone under pressures greater than 0.35 MPa.
Post-grouted anchors use delayed multiple grout injections to enlarge the grout body of straight shafted gravity grouted anchors.
Under reamed anchors consist of tremie grouted boreholes that include a series of enlargement underarms. This type of anchor may be used in a firm to hard cohesive deposits.