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High Tension Strands Steel Wire Galvanized
Description of High Tension Strands Steel Wire Galvanized
Tensioning stranded wire is a steel product composed of multiple steel wires. The surface of carbon steel can be added with galvanized layer, zinc-aluminum alloy layer, aluminum-clad layer, copper-plated layer, and epoxy resin coating.
Galvanized steel strand is usually used for load-bearing cable, stay wire, reinforcing core, etc. It can also be used as the ground wire of overhead power transmission to block the cables on both sides of the road or the structural cables in the building structure. The commonly used prestressed steel strands are uncoated low relaxation prestressed steel strands, and some are galvanized.
Technical Parameter of High Tension Strands Steel Wire Galvanized
| Dia(mm) | Tensile Strength(Rm/MPa) | Max strength for hole wire(Fm/kN) | StipulatedNominal Non proportional extension rate(Fp0.2/kN) | Cross section size(mm2) | Approximate weight(g/m) | Tolerance(mm) |
| 12.7 | ≥1860 | ≥185.1 | ≥166 | 98.7 | 775 | +0.4~-0.2 |
| 15.2 | ≥1860 | ≥262.5 | ≥235 | 150 | 1178 | +0.4~-0.2 |
| 12.8 | ≥1860 | ≥358 | ≥318 | 191 | 1500 | +0.4~-0.2 |
Application of High Tension Strands Steel Wire Galvanized
It is commonly used in highway bridges, railway bridges, urban overpasses, urban light rail, high-rise buildings, water conservancy, hydropower dams, port terminals, rock slope protection anchorage, foundation reinforcement, tunnel roof anchorage, prestressed grid, subway, large buildings, warehouses, tower buildings, heavy lifting, sliding film intermittent jacking, bridge and tunnel jacking, large containers and ships, sleeper, bridge support replacement, bridge, and building reinforcement, etc
Calculation of Prestressed Tensile Force of Steel Strand
The prestressed tensioning construction design of the steel strand
controls the tensioning force, which refers to the tensioning force
of the steel strand before the anchoring fixture after the
prestressed tensioning is completed. Therefore, in the calculation
of the theoretical elongation of the prestressed tension of the
steel strand, the distance between the anchor points at both ends
of the steel strand should be used as the calculated length of the
steel strand, but the controlled tension of the steel strand during
prestressed tensioning The tension is controlled at the jack tool
anchor, so for the convenience of control and calculation, the
distance between the anchor points at both ends of the steel
strand, plus the working length of the steel strand in the tension
jack, is used as the pre-strand of the steel strand. Calculated
length of theoretical elongation under stress tension.
When the steel strand is prestressed and stretched, most of the
exposed part of the steel strand is wrapped by anchors and jacks.
The tensile length of the steel strand cannot be directly measured
on the steel strand, so it can only be measured by The piston
stroke of the tension jack is used to calculate the tension value
of the steel strand, but at the same time, the retraction amount of
the anchor plug in the whole process of the tension of the steel
strand should be subtracted. The carrying capacity of the steel
strand should be 4-6 times the total traction force.
