Techniques
- TOP
- Techniques
- Ground Anchor
- Balloon Body Anchor (BB Anchor)
Balloon Body Anchor (BB Anchor)
Related technologies
Grout is injected into a steel tube (Balloon Body) to expand the tube into a cylindrical form. With this method, relatively large bearing power is achieved even if in soft ground, something difficult with friction anchors.
Features
- The bearing anchor features an anchor body expanded into a cylindrical form, achieving large bearing force even with soft ground.
- The fixing length is 1/3 and free length is 1/3 to 1/5 compared to conventional friction anchors. An anchor body fits into a small land lot.
- The steel tube of the anchor can be hammered directly. Installation and injection can be performed separately to reduce construction periods.
- Grout is injected into the steel tube, eliminating the risk of collapse of bored hole walls and creating a sound anchor body.
Removable anchor specification
A tension member (made of unbonded PC steel stranded wires) is bent and attached to the outside of the steel tube to be expanded into a cylindrical form. The rest of the procedure is the same as for a remaining anchor.
Permanent anchor specification
PC steel stranded wires covered with epoxy resin are used as the tensioning member.
