HOLLOW BAR GROUND ANCHOR
KEY SPECIFICATIONS
Обозначение тяги (R/N) | Внешний диаметр с учетом резьбы (R), мм, ± 10 % | Внутренний диаметр (N), мм, ± 10 % | Предел текучести, мПа, не менее | Разрывное усилие, кН, не менее | Удельный вес, кг/м пог, ± 10 % |
|---|---|---|---|---|---|
R38/N21 | 38 | 21 | 640 | 505 | 4.89 |
R38/N20 | 38 | 20 | 620 | 515 | 5.18 |
R38/N18 | 38 | 18 | 650 | 560 | 5.47 |
R38/N15 | 38 | 10 | 620 | 610 | 5.47 |
R40/N30 | 40 | 30 | 580 | 320 | 3.92 |
R40/N20 | 40 | 20 | 560 | 580 | 5.58 |
R40/N18 | 40 | 18 | 580 | 615 | 6.66 |
R40/N16 | 40 | 16 | 580 | 660 | 7.07 |
R40/N12 | 40 | 10 | 580 | 710 | 8.32 |
R41/N21 | 41 | 21 | 580 | 590 | 7.14 |
R41/N18 | 41 | 18 | 580 | 625 | 7.28 |
R42/N20 | 42 | 20 | 550 | 630 | 7.28 |
R42/N22 | 42 | 22 | 550 | 695 | 7.17 |
R42/N25 | 42 | 25 | 550 | 620 | 6.38 |
R52/N26 | 52 | 26 | 570 | 930 | 9.96 |
R51/N36 | 51 | 36 | 640 | 800 | 7.57 |
R51/N30 | 51 | 30 | 620 | 935 | 9.06 |
R51/N28 | 51 | 28 | 610 | 960 | 9.37 |
R73/N56 | 73 | 56 | 600 | 1000 | 10.76 |
R73/N53 | 73 | 53 | 550 | 1150 | 13.95 |
R73/N35 | 73 | 35 | 530 | 1850 | 21.11 |
R103/N77 | 103 | 77 | 550 | 2200 | 24.81 |
R103/N50 | 103 | 50 | 450 | 3600 | 43.63 |
R105/N78 | 105 | 78 | 530 | 2150 | 26.5 |
R105/N52 | 105 | 52 | 500 | 3600 | 51.08 |
R135/N83 | 135 | 83 | 500 | 4800 | 69.59 |
Installation Process The anchor installation is performed in a single technological step. The hollow bar functions simultaneously as the drill string and the injection conduit. Drilling begins with the immediate injection of a pressurized cement grout flush. As the grout penetrates the soil structure, it stabilizes the borehole walls, eliminating the need for casing tubes. The hollow bar and its couplers remain in the borehole, serving as the central reinforcement of the pile. Centralizers are used to ensure the specified design position and adequate grout cover.
Limited Access Applications In scenarios where standard piling technologies using heavy machinery are unfeasible, we employ compact equipment to install bored injection piles using segmental bars. This allows for pile installation in restricted spaces, such as building basements, between railway tracks, and under bridges or overpasses.
Design & Selection The anchor type, diameter, and length are selected based on the calculated design loads and the specific geological and geomorphological conditions of the site.