PC Strand For Prestressed Concrete
PC Strand
"PC strand" may refer to Prestressed Concrete Steel Wire Strand used in prestressed concrete. This type of wire strand is commonly used to increase the strength and load-bearing capacity of concrete structures. In the field of construction and engineering, prestressed concrete structures are widely used in bridges, high-rise buildings, dams and other engineering projects. Prestressed steel wire strands in concrete can help increase the bending and compressive capacity of the structure.
1 × 7 Strand PC Steel Wire
The term "1 × 7 strand PC wire" refers to a prestressed concrete wire structure with one main wire and seven strand wires. In this structure, the main wire is responsible for carrying the main tensile force, while the strands surround the main wire to provide support and reinforcement. This design can effectively improve the torsional strength and tensile properties of the wire, making it more suitable for use in prestressed concrete structures.
1 × 7 strand PC wires are commonly used in prestressed members of bridges, buildings and other concrete structures to provide stable prestressing mechanical properties and enhance the load-bearing capacity and durability of concrete structures.
Specifications and parameters
Specification | |||||||||
model number | Nominal Diameter | tensile strength | cross-sectional area | Weight per meter | Maximum force on the entire strand | 0.2%yield force | Maximum force Total elongation | Stress relaxation properties | |
Initial load phase When dry real meta product Percentage of Power Number | 1000 hours Stress relaxation rate | ||||||||
D,/mm | Rm/MPa | S,/mm2 | g/m | Fm/kN | Fp₀₂/kN | A/% | %F ma | r/% | |
1*7 | 9.50 |
1860 | 54.8 | 430 | 102 | 89.8 |
3.5 |
70
80 |
2.5
4.5 |
12.70 | 98.7 | 775 | 184 | 162 | |||||
15.20 | 140 | 1101 | 260 | 229 | |||||
15.70 | 150 | 1178 | 279 | 246 | |||||
17.80 | 191 | 1500 | 355 | 311 | |||||
18.90 | 220 | 1727 | 409 | 360 | |||||
21.60 | 285 | 2237 | 530 | 466 | |||||
1*7 | 9.50 |
1960 | 54.8 | 430 | 107 | 94.2 | |||
12.70 | 98.7 | 775 | 193 | 170 | |||||
15.20 | 140 | 1101 | 274 | 241 | |||||
1*71 | 12.7 | 1860 | 98.7 | 775 | 184 | 162 | |||
15.20 | 140 | 1101 | 260 | 229 | |||||
1*19S (1+9+9) |
21.80 |
1860 |
313 |
2482 |
583 |
513 | |||
1*19W (1+6+6/6) |
28.60 |
1860 |
532 |
4229 |
990 |
854 | |||
Product Description:
Perimeter rock reinforcement is often required in shafts in coal or other mines, and traditional anchor support methods may not be able to support effectively in some cases, leading to overall collapse with serious consequences. To solve this problem, mining anchor ropes are designed to provide more effective support.
The advantage of mining anchor ropes is that the length of their steel hinges is not limited, which allows the anchor loop segments to be fixed on the hard top plate. At the same time, due to the high strength level of the steel hinges, they can provide a large amount of pre-stress, so that the top plate at the bottom can form a uniform and rigid top plate with the anchor doughnut segments, which can effectively reinforce the surrounding rocks and realize better support effects.
This product is suitable for perimeter rock support works in coal mines and other mines, which can improve safety and stability.
Product performance parameters:
a. Anchorage static load anchorage performance: static load anchorage performance ηa is greater than or equal to 0.95, γapu is greater than or equal to 2.0%. This indicates that the anchorage performance is good under static loading condition and meets the requirements of relevant standards.
b. Fatigue loading performance: The anchor cable can meet the requirements of 2 million times of cyclic loading, which indicates that the anchor cable has good fatigue performance and durability under cyclic loading conditions.
c. Cyclic Load Performance: The anchor cable can meet the requirements of 50 times cyclic loading, indicating that the anchor cable can maintain good performance under cyclic loading.
d. Anchor pullout force: The pullout force Tw of the anchor cable is more than 1.05 times Nt, and Nt is 157.5KN, which indicates that the pullout capacity of the anchor cable meets the requirements, and it can withstand a certain tensile force.
Product Qualification
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