In challenging geological conditions like unconsolidated and cohesive soils, construction projects often face delays and safety risks due to inefficient drilling methods. SupAnchor's R thread self-drilling hollow anchor system addresses these issues by combining drilling and grouting into a single operation, significantly improving efficiency and safety. With over 39 million meters deployed globally, this innovative geotechnical reinforcement system has proven its reliability in diverse environments.
The SupAnchor self-drilling anchor system features an R thread design compliant with ISO 10208 and ISO 1720 standards, enabling quick on-site connections and reduced labor. Its hollow bar acts as a sacrificial drilling rod, injection tube, and reinforcing bar—the "3-in-1 principle"—streamlining operations and cutting costs. Key parameters from select models demonstrate its adaptability to various load and soil conditions.
| Model | Outside Diameter (mm) | Internal Diameter (mm) | Ultimate Load (kN) | Yield Load (kN) | Weight (kg/m) |
|---|---|---|---|---|---|
| R25N/12 | 25 | 12 | ≥200 | ≥150 | 2.30 |
| R32L/22 | 32 | 22 | ≥250 | ≥200 | 2.75 |
| R32S/17 | 32 | 17 | ≥360 | ≥280 | 3.50 |
These specifications allow the self-drilling anchor bolt to handle high tensile forces, with steel types like EN10083-3 ensuring durability and elongation properties (e.g., A100mm ≥6%) for flexibility. Anti-corrosion options—hot-dip galvanizing, SupCoating, and stainless steel—extend service life in environments from dry soils to corrosive coastal areas, making the hollow bar anchor ideal for long-term projects.
The drill-and-grout bolt design makes the SupAnchor system highly versatile for geotechnical reinforcement. In tunneling, it supports face stabilization and forepoling, preventing collapses. For ground engineering, it reinforces slopes, foundations, and retaining walls, reducing soil movement risks. Emergency projects and soft ground supports also benefit from its rapid deployment.
This adaptability stems from the self-drilling anchor system's ability to integrate with various soil types, enhancing safety and efficiency in critical infrastructure projects.
SupAnchor's innovations contribute to global infrastructure by reducing construction timelines and improving safety in mining, urban development, and transportation projects. The self-drilling anchor bolt minimizes labor and material costs, supporting sustainable practices. With a focus on professional standards and collaborative R&D, SupAnchor has built a reputation for reliability, backed by ISO certifications and a history of successful deployments in over 39 million meters of installations.
In summary, the SupAnchor R thread self-drilling hollow anchor exemplifies innovation and collaboration in geotechnical engineering, offering a robust solution for modern construction challenges while upholding high safety and efficiency standards.
SupAnchor's self drilling anchor system proved critical in a mountainous highway tunnel project, coping with fractured rock and high groundwater through superior tensile strength and rapid installation, highlighting modern geotechnical excellence.
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