Civil Engineering Reference
In-Depth Information
Table 2.8
Constants for the number of load cycles of open spiral wire ropes for (
2.102
), resin sockets
Reference
Wire rope
Nominal
rope
diameter
d
Nominal
strength R
0
Test
frequency
Free
rope
length
Number
of tests
Constants
Standard
deviation
lg s
N for d =30
mm, S
u
/d
2
=
60, 2S
a
/d
2
=
300 N/mm
2
N/mm
2
mm
Hz
L/d
n
a
0
a
1
a
2
a
3
a
4
a
5
Wehking and
Klöpfer
(
2000
) and
Klöpfer
(
2002
)
Open spiral
ropes
1 9 37z
n,
lubricated
4
1,370
12
4
1,770
4
5
1,370
1.5
12
10
1,770
bis
40
11
15.90
-3.862
0.0009
-0.0000030
-0.779
-
0.227
168,000
8.0
b
16
1,770
19
16
1,770
11
24
1,770
16
Cassey (
1993
)
and Paton
et al.
(
2001
)
a
Open spiral
40
1,570
C0.3
100
4
1 9 292zn
1 9 135
66.6
4
1 9 147
70
2
20.587
-5.420
-0.00019
-0.000024
-1.040
-
0.107
337,000
1 9 127
73
2
1 9 292 zn
127
1,570
55
4
Wehking and
Klöpfer
(
2000
),
Casey
(
1993
) and
Paton et al.
(
2001
)
Open spiral
ropes
For z =37
169,000
1 9 37 to
1 9 292
4-127
1,370-1,770
40
100
101
15.401
-3.910
0.00118
-0.0000037
-0.793
0.399
0.214
For z = 199
331,000
a
Lower specific tensile force S
u
/d
2
= 84 N/mm
2
b
Partly with ventilator for cooling
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