2000MPa超强度钢丝项目介绍课件.ppt

广东虎门二桥项目设置东涌、骝东(规划预留)、海鸥岛、沙田4处互通立交和两座特大桥。 两座跨江特大桥梁，主跨分别为1200米、1688米，其中: 坭洲水道桥为658+1688米的双塔双跨钢箱梁悬索桥，桥跨布置为658+1688+518m； 大沙水道桥为1200米双塔单跨钢箱梁悬索桥，桥跨布置为360+1200+480m。 似钧侩辱翅语悉例持郁及什早痈卜咒刷椽兴进峙救竖薯弱志腮倚捅鞭幽孙2000MPa超强度钢丝项目介绍课件2000MPa超强度钢丝项目介绍课件 Item ? ? Diameter ? ? Mechanical performance Coating quality Straightness 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Diameters and tolerances Out of roundness Nominal cross-sectional area Theoretical weight Tensile strength at breaking Tensile strength at yield Relaxation Elongation Modulus of elasticity Bending test Wrap test Torsion test Fatigue test Weight of zinc coating Copper sulfate test Adhesion of zinc coating Appearance quality Wire free upright height L=5m Free bending diameter Wire length Technical performance requirements Φ5.0 （ ±0.06 ） mm ≤ 0.06mm 19.6 （ ±0.47 ） mm2 153 （ ±4 ） g/m ≥ 1960MPa ≥ 1580MPa ≤ 7.5% ≥ 4% L=250m （ 2 ± 0.1 ） ×105MPa ≥ 4 times D=3d ,8 circles, no damage, no cracks L=100d,≥ 8 twists, no delamination fracture Cable Stress amplitude :200MPa , Wire fatigue stress 360MPa (Upper stress: 0.45 σ b ，Number of cycles: 2Million ) ≥ 300g/m2 ≥ 4 times 8 circles Steel wire’s surface should be smooth, even and no scar, cracks, burrs, mechanical damage, oil, rust and harmful attachments ≤ 15cm ≥ 8m ? Technical requirements for Hu Men bridge main cables 捅佃站遁郭争蟹劈敞杀卉寸敦据泪弊艘送霄蛹途赤遵绦搔祈脱篇称抢忠乖2000MPa超强度钢丝项目介绍课件2000MPa超强度钢丝项目介绍课件 Item ? ? Diameter ? ? ? Mechanical performance Coating quality Linearity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Diameters and tolerances Out of roundness Nominal cross-sectional area Theoretical weight Tensile strength at breaking Tensile strength at yield Relaxation Elongation Modulus of elasticity Bending test Wrap test Torsion test Fatigue test Weight of zinc coating Copper sulfate test Adhesion of zinc coating Appearance quality Wire free upright height L=5m Free bending diameter Wire length Technical performance requirements Φ5.15 （ ±0.06 ） mm ≤ 0.0