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Micropile Foundation Work SDA T52/26 Anchor Bolt T52 Self Drilling Rock Anchors
Specification:
Outer Diameter:52mm
Inner Diameter:26mm
Utimate Load:930KN
Yield load:730KN
Weight:10kg/meter
Applications:
For Tunnelling Ground engineering, Micropile Foundation Work SDA, Radial systematic anchoring, soil nailing and Stabilization of tunnel portals.
Description:
Self drilling anchor system is mainly used in slope stabilization, tunneling pre-support, foundations with micropiles, it is also widely used in the railway system, metro project etc. It can be installed in sites with weak rocks, loose soil, weathered layer, sand with stone layer and so difficult to create a hole in complex formations. The unconsolidated ground condition favor the self-drilling anchor bolt technique for fast and simple method of installation compared to the traditional method.|
Advantages:
1.No casings required, because anchor bars can be drilled into loose soils without needing casings to support the boreholes.
2.Continuous threads ensure the bars can be cut and coupled at any point, or extended.
3.The hollow core not only serves for flushing during drilling, but also for grouting after
drilling.
4.Duplex anti-crossion prosess ,hot-dip galvanized and epoxy coating system.
5.Both rope threads and trapezoid threads are robust and ideal for rotary-percussive drilling and ensuring a high level of bond with the borehole gout.
Hollow anchor bar technical data:
| Size | O.D(mm) | I.D(mm) | Ultimate Load(KN) | Yield Load(KN) | Weight(kg/meter) | A | AGT |
| R25N-14 | 25.0 | 14.0 | 200 | 150 | 2.3 | ||
| R32L-22 | 32.0 | 22.0 | 220 | 180 | 2.8 | ||
| R32N-21 | 32.0 | 21.0 | 280 | 230 | 2.9 | ||
| R32N-18.5 | 32.0 | 18.5 | 280 | 230 | 3.4 | ||
| R32S-17.5 | 32.0 | 17.5 | 360 | 280 | 3.5 | ||
| R32S-15 | 32.0 | 15 | 360 | 280 | 4.1 | ||
| R38N-21 | 38.0 | 21.0 | 500 | 400 | 4.8 | >8% | >5% |
| R38N-19 | 38.0 | 19.0 | 500 | 400 | 5.5 | >12% | >10% |
| R51L-38 | 51.0 | 38.0 | 550 | 450 | 6.0 | ||
| R51L-36 | 51.0 | 36.0 | 550 | 450 | 7.6 | ||
| R51N-36 | 51.0 | 36.0 | 800 | 630 | 7.6 | ||
| R51N-33 | 51.0 | 33.0 | 800 | 630 | 8.4 | ||
| T76N-49 | 76.0 | 49.0 | 1600 | 1200 | 16.5 | ||
| T76S-45 | 76.0 | 45.0 | 1900 | 1500 | 19 | ||
| T30-11 | 30.0 | 11.0 | 320 | 260 | 3.3 | ||
| T30-14 | 30.0 | 14.0 | 275 | 220 | 2.9 | ||
| T40-16 | 40.0 | 16.0 | 660 | 525 | 7.1 | ||
| T40-20 | 40.0 | 20.0 | 540 | 425 | 5.6 | ||
| T52-26 | 52.0 | 26.0 | 930 | 730 | 10 | ||
| T73-56 | 73.0 | 56.0 | 1035 | 830 | 10.8 | ||
| T73-53 | 73.0 | 53.0 | 1160 | 970 | 14 | ||
| T73-45 | 73.0 | 45.0 | 1600 | 1270 | 17.5 | ||
| T103-78 | 103.0 | 78.0 | 2270 | 1800 | 25 | ||
| T103-51 | 103.0 | 51.0 | 3660 | 2670 | 44 | ||
| Steel grade | Acc. to EN10083-1 / EN10210-1 | ||||||
| Thread direction | Left hand / Right hand | ||||||
| Thread standard | ISO 10208 / ISO1720 / Other international standards | ||||||