Magnetic NDT and Computer Modeling of Steel Rope Deterioration in Suspended Bridges

被引：2
|
作者：
Vorontsov, Alexander [1 ]
Zhirnov, Alexander [1 ]
Sukhorukov, Dmitry [1 ]
机构：
[1] Intron Plus Ltd, Moscow 111524, Russia
来源：
DAMAGE ASSESSMENT OF STRUCTURES X, PTS 1 AND 2 | 2013年 / 569-570卷
关键词：
stay wire rope; magnetic testing; deterioration; breaking load simulation; safety factor;
D O I：
10.4028/www.scientific.net/KEM.569-570.1101
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A combined approach to strength assessment of stay ropes in suspension bridges is considered. The rope working condition is analyzed by in-situ magnetic testing, computational assessment of ultimate breaking load and evaluation of residual margin of safety. The diagnostic parameters - distributed and/or local faults in wires - are used as input data for mechanical model of rope structure. The model allows calculating the stresses in each wire, simulating the degradation process and evaluating the rope breaking tensile load. The safety factor of deteriorated rope is considered as a generalized parameter that specifies the rope safe operation as an element of bridge stay arrangement. Examples of integrity analysis of stranded stay ropes and locked coil stay ropes are presented.
引用
收藏
页码：1101 / 1108
页数：8
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