Prestressed rock bolts represent a highly efficient and reliable reinforcement technique that significantly enhances structural stability and load-bearing capacity. In engineering practice, the selection of appropriate bolt types and construction methods must be tailored to specific geological conditions, structural characteristics, and design requirements.
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Anchoring method:
Cement mortar rock bolts:Bond the rock bolt to the rock mass by injecting cement mortar.
Mechanical rock bolts (expansion bolts): Employ mechanical or chemical methods to expand the anchoring element, generating friction with the rock mass.
Resin Anchor: Uses resin as the anchoring agent, featuring rapid curing and high bonding strength.
Self-Drilling Anchor: Completes drilling, grouting, and anchoring in a single operation, suitable for loose or fractured rock and soil formations.
Anchorage length:.
Short anchor rods: Feature shorter anchorage lengths, suitable for surface reinforcement.
Long anchor rods: Feature longer anchorage lengths, suitable for deep reinforcement.
Full-length bonded prestressed anchor rods: Special techniques bond the entire length of the anchor rod to the grout body, achieving prestressing by controlling the tension force of the steel strands.
Pre-rolled Threaded Steel Anchor Rod: Utilizes pre-rolled threaded steel bars as the anchor rod body.
Temporary Anchor Rods: Used for temporary support, such as during foundation pit excavation.
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West Side Of Jianshe Street, Southwest Industrial Zone, Linmingguan Town, Handan, Hebei, China
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