Anchors counteract lateral forces and overturning for dams and critical structures; they are also most commonly used to provide excavation support.
- Earth Retention Systems
- Post Tensioning Dams
- Seismic Stabilization
Anchors consist of holes that are drilled vertical (for uplift support) or at angles for lateral support and filled with a cement grout. After curing takes place they are post-tensioned. Anchors consist of high strength steel bars or multi-strand steel wires.
Ground anchors are also frequently utilized for lateral support of slurry diaphragm walls. Since the ground anchors provide intermediate points of support at one or more levels, they reduce bending moments and consequently reduce the need for thicker walls, reinforcement, and depth-of-toe requirements. Anchors eliminate the need for internal steel bracing and strutting within the excavation and leave it free of obstructions which reduce excavation costs and speeds up construction. This aspect can be particularly valuable in congested urban locations with limited surrounding space for equipment and materials. Anchors are used in soils or in rock and may be either permanent or temporary.
- Cost effective bracing system for all soil conditions.
- Final strength of the stabilized soil can be predetermined.
- Attainable large loads.
- Installation in limited access areas and complex drilling conditions.
Support of Excavation
Slurry / Diaphragm Walls
Lower Harbor Brook CSO Storage Facility
County of Onondaga NY, Department of Public Works