In the demanding fields of tunneling and ground engineering, unstable geological conditions such as unconsolidated or cohesive soils pose significant challenges, including prolonged drilling times and safety risks. SupAnchor's R thread self-drilling hollow anchor addresses these issues by integrating drilling and grouting into a single operation, enhancing efficiency and safety. This self drilling anchor system has been deployed in over 39,000,000 meters worldwide, proving its reliability in diverse projects from urban tunnels to slope reinforcements.
The self-drilling anchor system with R thread operates on a "3-in-1 principle," where a ribbed hollow steel bar functions as a sacrificial drilling rod, injection tube, and reinforcing bar. This design, compliant with ISO 10208 and ISO 1720 standards, allows for rapid on-site installation, reducing labor and time by up to 50% compared to traditional methods. Key parameters from select models highlight its adaptability: for example, the R25N/12 model offers an ultimate load of ≥200 kN, while the R32S/15 provides ≥360 kN, catering to various load demands in geotechnical reinforcement systems.
| 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/15 | 32 | 15 | ≥360 | ≥280 | 4.00 |
Anti-corrosion options further extend the product's lifespan: hot-dip galvanizing for dry environments, SupCoating for moderate corrosion, and stainless steel for harsh conditions like coastal areas. This hollow bar anchor ensures durability and performance, solving engineering challenges by minimizing downtime and enhancing structural integrity in variable soils.
The R thread self-drilling hollow anchor is widely used in tunneling engineering for face support and forepoling, ensuring safe excavation in unstable rock. In ground engineering, it stabilizes slopes and foundations, preventing collapses in cohesive soils. This drill-and-grout bolt is also ideal for emergency reinforcements and temporary supports in soft ground, making it a versatile choice for projects requiring rapid deployment and high reliability. For instance, in urban development, it accelerates timeline while maintaining safety standards.
SupAnchor's self drilling anchor system contributes significantly to global infrastructure, supporting projects in mining, transportation, and urban expansion. The installation of millions of meters worldwide underscores its role in improving geotechnical safety and reducing costs. With a focus on innovation and ISO-certified production, SupAnchor exemplifies professionalism and collaboration, partnering with engineers to deliver cutting-edge solutions. This geotechnical reinforcement system not only meets current demands but also aligns with sustainable construction trends, fostering long-term industry growth.
A European infrastructure project utilized SupAnchor's self drilling anchor bolt system to stabilize a steep slope, overcoming fractured rock and groundwater with high-strength hollow bars and efficient drill-and-grout technology.
A major infrastructure project in mountainous terrain uses SupAnchor's self drilling anchor system to stabilize a critical slope, combining drilling and grouting in one pass for rapid, reliable geotechnical reinforcement.
SupAnchor introduces the SupFRP® GFRP Dowel Bar, a corrosion-free load transfer solution with 100+ year service life, high strength, and superior thermal compatibility for jointed rigid pavement and construction joints.
A European highway project uses SupAnchor's self drilling anchor system to stabilize a steep cut slope with complex geology, featuring high-strength hollow bar anchors and integrated drilling and grouting.
SupAnchor's SupPump Sup2000 and Sup5000 grout pumps demonstrate exceptional performance in a major Alpine tunnel project, offering high-pressure precision and robust durability for challenging geotechnical reinforcement.
