Vortex-Induced Vibration Control of Long Stay Cables by Using Inerter-Based Dampers

Xu, Kun; Song, Junyan; Bi, Kaiming

doi:10.1142/s0219455422501358

Cited by 13 publications

(3 citation statements)

References 62 publications

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“…A combination of the NSD and the inerter could further improve their respective performance in multimode cable damping enhancement (Gao et al, 2022b). Beside the damping effect, Xu et al (2022a) analyzed the VIV responses of a cable with an inerter-based absorbers and compared the performances of different layouts.…”

Section: Negative Stiffness Devices and Inertersmentioning

confidence: 99%

Stay cable vibration mitigation: A review

Sun

Chen

Huang

2022

Advances in Structural Engineering

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Stay cables in cable-stayed bridges are subjected to various types of dynamic excitation mechanisms under environmental loads. The excited vibrations can have a large amplitude because of low vibration frequencies and small inherent damping of cables. As cables become longer (the longest cables are around 600 m in cable-stayed bridges with a main span of 1000 m), more modes are vulnerable to wind and rain-wind induced vibrations, posing challenges to vibration mitigation. This paper presents a comprehensive review of recent advances in stay cable vibration mitigation, including theoretical modeling of cable damping system and techniques for enhancing multimode damping. Recent results on cable damping measurements, understanding of cable vibrations, and relevant aerodynamic countermeasures are also recalled. The reflections can provide guidance for cable vibration control design of cable-supported bridges and for the maintenance/upgrade of cable vibration mitigation system of existing bridges.

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Section: Negative Stiffness Devices and Inertersmentioning

confidence: 99%

Stay cable vibration mitigation: A review

Sun

Chen

Huang

2022

Advances in Structural Engineering

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“…The cable-stayed cables, slender in shape, have a low damping structure, which produces vortex resonance together with wind and rain excitation under the * Author to whom any correspondence should be addressed. action of strong winds [1][2][3]. Intense vibration can lead to problems, such as fatigue and rupture of diagonal cables, which can damage the bridge structure and jeopardize safety [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Design of flexible sensor for wind pressure monitoring of stay cables

Wang,

Guo,

Huang

et al. 2024

Meas. Sci. Technol.

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Strong winds can make a bridge’s cable-stayed cables produce violent vibrations, leading to fatigue of the cable-stayed cables and damaging the cable-stayed bridge’s structure. Accurately and effectively obtaining data on the wind loads applied to the cable-stayed cables is important for assessing the cable-stayed cables’ health. Currently, the more widely used sensing elements include diffuse silicon piezoresistive sensors and strain gauges. However, most of them present such disadvantages as rigidity, difficult to fit the curved surface, high cost and low sensitivity. In this paper, a conductive hydrogel flexible pressure sensor based on TA/CB@PDMS was developed, using carbon black (CB) as the main conductive medium, with good electrical conductivity, high sensitivity (0.95 kPa-1) and excellent tensile properties (210% tensile breakage). Meanwhile, a salt permeation method(Soak the sensor in LiBr solution) was used to effectively inhibit the sensor's water from being evaporated and frozen. Its substrate incorporates tannic acid (TA) to increase the sensor’s adhesion so that it adheres well to the diagonal cable’s surface. In this paper, the wind speed variation around the diagonal cable and the force distribution on the surface with considering the fluid-structure coupling effect are analyzed by ANSYS WORKBECH finite element simulation. Wind tunnel experiments simulate the sensor’s force response when the inclined cable is subjected to different wind speeds, and the detection accuracy reaches 96.17%. The results show the sensor developed in this paper can realize accurate wind pressure detection of the inclined cable. This study provides a new method for wind pressure detection and health inspection of diagonal cables.

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“…To suppress the multi-mode vibrations of super-long stay cables, the dampers are required to provide sufficient damping for higher modes, and the effective mode range should be wider. 67 However, the design of damper often focuses on adding damping to the first several cable modes in current damping design. The effects of the parameters (i.e.…”

Section: Introductionmentioning

confidence: 99%

Free vibration of a taut cable with internal high damping rubber dampers and an external negative stiffness damper

Yang

2023

Journal of Low Frequency Noise, Vibration and Active Control

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Frequent vibration events on the long stay cables highlight the need to control their multi-mode vibrations. Compared to commonly used viscous dampers for cable vibration control, the negative stiffness damper (NSD) demonstrates its superior performance. However, a single NSD is incapable of providing sufficient supplemental damping for a super-long cable, especially for the multi-mode vibration mitigation. The combined internal high damping rubber (HDR) dampers and the external NSD for cable vibration control is proposed to achieve better multi-mode control performance in this study. First, the complex modal analysis of a taut cable coupled with an external NSD and two internal HDR dampers is conducted to reveal the coupling performance of the damping system. The asymptotic and iterative solutions of transcendental equation obtained in complex modal analysis are derived, respectively. Subsequently, the comparison of asymptotic and iterative solutions verifies the applicability of asymptotic solutions. Finally, parametric studies are performed to investigate the effect of the parameters of NSD and the coupling configuration on their combined control performance. Results show that the coupling schemes with different configurations can possess a wider effective modal range or a better damping effect in the narrower modal ranges according to different damping targets. It provides a diversified solution for multi-mode damping enhancement of stay cables.

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Vortex-Induced Vibration Control of Long Stay Cables by Using Inerter-Based Dampers

Cited by 13 publications

References 62 publications

Stay cable vibration mitigation: A review

Stay cable vibration mitigation: A review

Design of flexible sensor for wind pressure monitoring of stay cables

Free vibration of a taut cable with internal high damping rubber dampers and an external negative stiffness damper

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