Fatigue Life Evaluation of Parallel Steel-Wire Cables under the Combined Actions of Corrosion and Traffic Load

Yu, Sheng; Cheng, Yu-Shu; Liu, Chengyin; Ou, Jinping

doi:10.1155/2023/5806751

Cited by 10 publications

(1 citation statement)

References 40 publications

(67 reference statements)

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“…The traditional method of improving cable fatigue life is through experimental testing to determine the factors that reduce cable fatigue life. The method of load experiments is used to study in detail the factors that affect the fatigue life of cables [ 21 ]. Load experiments are an effective means of revealing key characteristics of the fatigue performance of cable materials by conducting experiments at different load levels and observing the fatigue life changes of cables under these load conditions [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Fatigue Life Analysis of Motion Cables in Sensors under Cyclic Loading

Liang,

Guan,

Ding

et al. 2024

Sensors

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Motion cables, which are widely used in aero-engine sensors, are critical components that determine sensor stability. Because motion cables have unique motion characteristics, the study of their mechanical properties and reliability is very important. In addition, motion cables are complex in structure and cannot be applied to conventional fixed cable research methods. In this study, a new approach is proposed to introduce the theory of anisotropic composites into a simplified cable model, so that the cable is both physically conditioned and has good mechanical properties. While applying the theory of anisotropic composites, the forces of tension and torsion are considered in a motion cable under the combined action. In this context, the reliability of the structure is the fatigue life of the cable. In this paper, the mechanical properties and fatigue life of motion cables are investigated using the finite element method at different inclination angles and fixation points. The simulation results show that there is a positive correlation between the inclination angle and the extreme stress in the motion cables, and the optimal inclination angle of 0° is determined. The number of fixing points should be reduced to minimize the additional moments generated during the movement and to ensure proper movement of the cables. The optimal configuration is a 0° inclination angle and two fixing points. Subsequently, the fatigue life under these optimal conditions is analyzed. The results show that the high-stress zone corresponds to the location of the short-fatigue life, which is the middle of the motion cables. Therefore, minimizing the inclination angle and the number of fixing points of the motion cables may increase their fatigue life and thus provide recommendations for optimizing their reliability.

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Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Fatigue Life Analysis of Motion Cables in Sensors under Cyclic Loading

Liang,

Guan,

Ding

et al. 2024

Sensors

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Automatic assessment of the fatigue life of cables of cable‐stayed bridges by on‐line monitoring

Xu,

Wu,

Casas

et al. 2024

Structural Concrete

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To accurately and timely evaluate the long‐term performance of cables in cable‐stayed bridges, an automatic perception technology scheme by on‐line monitoring of cable vibrations is proposed for the fatigue damage evaluation of in‐service cables. In the fatigue‐stress amplitude of cables, the stress produced by tension changes caused by external actions like traffic, wind, and temperature is the main component. When cables vibrate significantly, the stress caused by changes in cable vibration‐induced additional stress should not be neglected. Besides axial stress, bending stress is also significant in cable fatigue damage analysis. To make cable fatigue life prediction closer to real engineering scenarios, this factor should be considered. First, based on the cable dynamic stiffness theory, a method is proposed for the automatic gathering of the actual full‐stress time history of a cable by on‐line vibration monitoring. Furthermore, based on Miner's linear fatigue damage accumulation theory, an automatic fatigue life assessment method is proposed and applied to the vibration monitoring data of cables on an operational bridge. The results indicate that the proposed technology realizes automatic on‐line monitoring of cable forces and fatigue assessment of cables. Through statistical analysis of cable fatigue stress amplitude, it was determined that in cable‐stayed bridges, compared to long cables, short cables are more sensitive to external variable loads, typically experiencing larger and more frequent tension changes, and are more prone to fatigue. Therefore, short cables should be given more attention when analyzing cable fatigue in cable‐stayed bridges.

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Reliability and durability assessment of bridge stay cables

Teichgraeber

2024

Arch. Civ. Mech. Eng.

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An algorithm for the reliability and durability assessment of stay cables in bridges is presented in this study enabling their probability of failure and a safe working period to be determined under various loading scenarios. The algorithm was originally developed based on data collected from an extensive structural monitoring campaign of the biggest single-pylon concrete cable-stayed bridge in Poland and used to assess the durability of its suspension system. It was then modified to be suitable for the evaluation of stay-cables subjected to wind excitation and structural reliability of the suspension system in a real steel bridge where permanent plastic deformations occurred in the anchor zones of the stay cables. The algorithm takes into account analytical models describing the stay cables and their numerical finite element models (FEM). As such, it is a universal tool having a wide range of applications, also beyond stay cables often encountered in medium- and long-span bridges forming a critical part of the civil engineering infrastructure.

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Fatigue Life Evaluation of Parallel Steel-Wire Cables under the Combined Actions of Corrosion and Traffic Load

Cited by 10 publications

References 40 publications

Mechanical Properties and Fatigue Life Analysis of Motion Cables in Sensors under Cyclic Loading

Mechanical Properties and Fatigue Life Analysis of Motion Cables in Sensors under Cyclic Loading

Automatic assessment of the fatigue life of cables of cable‐stayed bridges by on‐line monitoring

Reliability and durability assessment of bridge stay cables

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