Rock Anchor

Definition

A rock anchor is a post-tensioned rod or cable inserted into a rock formation to anchor a structure to it.

Purpose

The purpose of a rock anchor is to provide a secure and stable foundation for structures built on or into rock formations, ensuring they are anchored firmly and can resist various loads and forces.

Examples of Use

• Rock anchors are used in the construction of dams to stabilize the structure against water pressure.
• In tunnel construction, rock anchors secure the tunnel lining to the surrounding rock.
• High-rise buildings on rocky terrains use rock anchors to anchor the foundation deeply into the rock bed.

Related Terms

• Post-Tensioning: A method of applying tension to a structural element after it has been placed in position.
• Foundation: The base on which a structure rests.
• Geotechnical Anchor: A device used to stabilize soil or rock masses for construction.

Notes

Proper installation and tensioning of rock anchors are critical for ensuring the stability and safety of structures, particularly in challenging geological conditions.