GB/T5224-2003 ASTM416M_预应力钢绞线国标美标

预应力混凝土用钢绞线,主要产品规格见下表:

产品名称	规格型号	材质	执行标准
低松驰预应力混凝土用钢绞线	1X3 φ6.20-12.00mm	82B	GB/T5224-2003 ASTM416M
低松驰预应力混凝土用钢绞线	1X7 φ9.50-17.80mm	82B	GB/T5224-2003 ASTM416M

该产品主要作预应力混凝土结构钢筋用,如大跨度铁路和公路的桥梁\吊车梁\岩土锚固工程,多层工业厂房等.
预应力钢绞线技术要求[Technical Specification GB/T5224-95]

结构 Composition	公称直径 Nominal diametre (mm)		截面积 Area of Section (mm)	允许偏差 Tolerance (mm)	强度级别 Tensile Strength Grade (Mpa)	整根钢绞线的最大符合 Rupture for whole of strand (KN)	屈服负荷 Yielding Load (KN)	伸长率 Elongation (lo=600mm) (%)	每100m理论重量 Theoretical Weigth per 1000 metre (Kg)	1000h松弛率%不大于 Relaxation Value1000 hours no more than
										Ⅰ	Ⅱ
										初始负荷为70%公称最大负荷 Initiate loads is 70% of maxmumnominal load
						不小于（not less than)
1*2	10.00 12.00		39.5 56.9	+0.30 -0.15	1720	67.9 97.9	57.7 83.2	3.5	310 447	8.0	2.5
1*3	10.80 12.90		59.3 85.4	+0.30 -0.15		102 147	86.7 125	3.5	465 671	8.0	2.5
1*7	标准型	9.50	54.8	+0.30 -0.15	1860	102 138 184	86.6 117 156	3.5	432	8.0	2.5
		11.10	74.2		1860				580
		12.70	98.7	+0.40 -0.20	1860				774
		15.20	139		1720 1860	239 259	203 220		1101
	摸拔型	12.70	112	+0.40 -0.20	1860	209	178	3.5	890	8.0	2.5
		15.20	165		1860	300	255	3.5	1295	8.0	2.5

美国材料与实验协会标准[ASTMA416-90a]

级别

Grade

公称直径

Nominal
diameter

允许偏差

Tolerance

截面积

Area of
Section

每1000m理论重量
Theoretical
weight per
1000 metre
(Kg)

破断力

Minmum
breaking
load
(KN)

1%伸长最小载荷

Minimum
load at 1 percent extension
(KN)

伸长率

Elongation
不小于
not less
than
(%)

松弛值

Relaxation Value
1000hrs
不大于
Not more than

250

9.35
11.11
12.70
15.24

±0.41

51.61
69.68
92.90
139.35

405
548
730
1094

89.0
120.1
160.1
240.2

80.1
108.1
144.1
216.2

3.5

2.5

3.5

270

9.53
11.11
12.70
15.24

+0.66
-0.15

54.84
74.19
98.71
140.00

432
582
775
1102

102.3
137.9
183.7
260.7

92.1
124.1
165.3
234.6

3.5

2.5

3.5

英国标准[BS5896]

钢绞线类型 Strand type	公称直径 Nominal diameter (mm)	允许偏差 Tolerance (mm)	截面积 Area of section	每1000m 理论重量 Theoretical Weight per 1000 metre (kg)	抗拉强度 Tensile Strength (Mpa)	规定特性值断裂截菏 Specified characte- ristic breaking load (KN)	规定特性值0.1%屈服载荷 Specified characte - ristic 0.1% yielding load (KN)	1%伸厂率时的载荷 load at 1％ Elongation Lo≥500mm (KN)	最大载荷时的最小深长率 Minimem Elongation at Max load (%)	松弛值 Relaxation value 1000h
										60% Initial load	70%	80%

标准 7丝 Standard 7-wire	9.3 11 12.5 15.2	+0.3 -0.15 -0.3 -0.15 +0.4 -0.2 +0.4 -0.2	52 71 93 139	408 557 730 1090	1770 1770 1770 1670	92 125 164 232	78 106 139 197	81 110 144 204	3.5 3.5 3.5 3.5	1.0 1.0 1.0 1.0	2.5 2.5 2.5 2.5	4.5 4.5 4.5 4.5
超级 7丝 super 7-wire	9.6 11.3 12.9 15.7	+0.3 -0.15 -0.3 -0.15 +0.4 -0.2 +0.4 -0.2	55 75 100 150	432 590 785 1180	1860 1860 1860 1770	102 139 186 265	87 118 158 225	90 122 163 233	3.5 3.5 3.5 3.5	1.0 1.0 1.0 1.0	2.5 2.5 2.5 2.5	4.5 4.5 4.5 4.5
摸拨 7丝 Die-drawn 7-wire	12.7 15.2 18	+0.4 -0.2 +0.4 -0.2 +0.4 -0.2	112 165 223	890 1295 1750	1860 1820 1700	209 300 380	178 255 323	184 264 334	3.5 3.5 3.5 3.5	1.0 1.0 1.0 1.0	2.5 2.5 2.5 2.5	4.5 4.5 4.5 4.5

后张无粘结预应力筋适用于大跨度、大开间建筑的现浇楼板、大荷载的预制梁及其它特种结构。具有不需预留孔道、不必灌浆、施工简便、节省材料、随便弯曲等特征。
Post-tensioned unbonded prestressed concrete bar is suitable for cast-in-placeconcrete of long-span and wide buildings,large load prefabricated beam and other construction.I has the charcters of not need room for futture expasion nd grout-in,Convenient use,material savad,bended easy.

名称

Name

项目

Item

单位

Unit

钢丝束

Tendon

钢丝线Strand

低松弛钢绞线

钢材Steel

抗拉强度 Tensile strength

延伸率 Elongation

截面积 Section Area

重量 Weight

弹性模量 Modulus of elasticity

Mpa

mm 2

kg/m

Mpa

≥ 1570

≥ 4.0

137.41

1.08

2.0*10

≥ 1470

≥ 3.5

139.98

1.09

1.8*10

≥ 1860

≥ 3.5

140.00

1.10

1.8*10

油脂

塑料

Oil Plastic

防腐油脂重量

Weight of antiseptic oil

高密度聚乙烯炉套厚度

High density polyethylene thickness of coat

G/m

＞ 50

0.80~1.2

＞ 50

0.80~1.2

＞ 50

0.80~1.2

摩擦

试验

Friction test

无粘结预应力筋与壁之间的摩擦系数 u

Friction coefficient of unbounded

prestressed bar and its coat (u)

考虑无粘结预应力筋每米长度局部偏差对摩擦的影响系数 K

Coefficient of octal error effect on friction (per meter) (k)

0.1

0.0035

0.12

0.004

0.12

0.004