In a major European highway expansion project, engineers confronted significant challenges with thermal expansion and contraction in concrete slabs, which threatened structural integrity over time. SupAnchor's GFRP Dowel Bar emerged as a critical solution, providing a mechanical link that ensures stability while accommodating environmental shifts. This innovation highlights SupAnchor's role in advancing construction technologies for demanding applications.
The installation process for SupAnchor's GFRP Dowel Bar involves precise placement at construction joints to facilitate load transfer between adjacent concrete slabs. Key parameters, such as high transverse shear load and optimal thermal expansion coefficients, address engineering needs by preventing joint failure and reducing maintenance costs. For instance, the DB32 model boasts a transverse shear load of 130 kN, ensuring robust performance in varying conditions.
| Model | Outside Diameter (mm) | Transverse Shear Load (kN) | Nominal Cross-sectional Area (mm²) | Coefficient of Thermal Expansion (x10⁻⁶/°C) | Weight (kg/m) |
|---|---|---|---|---|---|
| DB16 | 16 | 35 | 200 | 9-11 | 0.43 |
| DB20 | 20 | 55 | 310 | 9-11 | 0.67 |
| DB25 | 25 | 85 | 490 | 9-11 | 1.05 |
| DB32 | 32 | 130 | 800 | 9-11 | 1.71 |
| DB38 | 38 | 180 | 1130 | 9-11 | 2.41 |
| DB45 | 45 | 255 | 1590 | 9-11 | 3.37 |
These specifications directly combat common issues like corrosion and structural fatigue. The non-conductive and non-magnetic properties make the dowel bars ideal for sensitive environments, while the high strength and load transfer efficiency enhance safety and longevity. SupAnchor's self drilling anchor systems complement this by offering versatile solutions for geotechnical reinforcement, ensuring comprehensive support across projects.
SupAnchor's GFRP Dowel Bar finds applications in jointed rigid pavements, embankments, and mechanically stabilized earth (MSE) walls, where electromagnetic sensitivities or harsh conditions demand reliable performance. In urban infrastructure, such as tunnels and mining operations, these dowel bars contribute to geotechnical safety by maintaining joint integrity under stress. The adaptability to custom requirements allows for tailored solutions in diverse scenarios, from highway expansions to industrial facilities.
This versatility underscores the product's role in a broader geotechnical reinforcement system, often integrated with SupAnchor's self drilling anchor bolts for enhanced stability.
The adoption of SupAnchor's GFRP Dowel Bar supports sustainable development in global infrastructure by reducing lifecycle costs and minimizing environmental impact. With a service life exceeding 100 years and no-rust characteristics, it aligns with international standards for durability and safety. In regions prone to temperature fluctuations, such as North America and Europe, this technology ensures that structures like highways and railways remain operational with minimal downtime. The hollow bar anchor and drill-and-grout bolt systems from SupAnchor further reinforce this commitment, providing reliable options for soil nail systems and ground anchor applications.
SupAnchor's dedication to innovation is evident in their ISO-certified manufacturing processes and ongoing research and development. Collaborations with global engineering firms have led to successful deployments in projects ranging from urban transit systems to renewable energy sites. By fostering a professional and collaborative approach, SupAnchor strengthens its position as a leader in the geotechnical reinforcement industry, driving advancements that benefit communities worldwide.
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