A pounding spacer damper and its application on transmission line subjected to fluctuating wind load

Fu, Xing; Li, Hong‐Nan; Li, Jiaxiang; Zhang, Peng

doi:10.1002/stc.1950

Cited by 21 publications

(11 citation statements)

References 53 publications

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“…Lin et al [65] analyzed the vibration reduction effect of the PTMD and multiple PTMDs (MPTMDs) on the basis of a modified pounding force model [66]. Furthermore, in order to control the wind-induced response of the transmission tower, Fu et al [67] devised a new pounding spacer damper (PSD). More recently, a bidirectional PTMD [68] and a damper with zero distance from the tuned mass to the collision boundary [69] have been presented.…”

Section: Introductionmentioning

confidence: 99%

Vibration Control of a High-Rise Slender Structure with a Spring Pendulum Pounding Tuned Mass Damper

Wang

Zhang

2021

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High-rise structures are normally tall and slender with a large height-width ratio. Under the strong seismic action, such a structure may experience violent vibrations and large deformation. In this paper, a spring pendulum pounding tuned mass damper (SPPTMD) system is developed to reduce the seismic response of high-rise structures. This SPPTMD system consists of a barrel limiter with the built-in viscoelastic material and a spring pendulum (SP). This novel type of tuned mass damper (TMD) relies on the internal resonance feature of the spring pendulum and the collision between the added mass and barrel limiter to consume the energy of the main structure. Based on the Hertz-damper model, the motion equation of the structure-SPPTMD system is derived. Furthermore, a power transmission tower is selected to evaluate the vibration reduction performance of the SPPTMD system. Numerical results revealed that the SPPTMD system can effectively reduce structural vibrations; the reduction ratio is greater than that of the spring pendulum. Finally, the influence of the key parameters on the vibration control performance is conducted for future applications.

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Section: Introductionmentioning

confidence: 99%

Vibration Control of a High-Rise Slender Structure with a Spring Pendulum Pounding Tuned Mass Damper

Wang

Zhang

2021

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“…To date, scholars have continued to study the conductor damping method according to energy conservation principles . And many kinds of damper are used for reducing the vibration of the conductor . Although these theoretical studies provide a basis for vibration reduction in the wire, the phenomenon of wire breakage still occurs, and sometimes, the damper will detach.…”

Section: Introductionmentioning

confidence: 99%

Aeolian vibration‐based structural health monitoring system for transmission line conductors

Zhao

Huang

Zhang

et al. 2020

Struct Control Health Monit

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Summary The transmission line in a power network is similar to a blood vessel. Any disconnection ultimately affects the transmission of electrical energy, and broken strands and detachment of the fittings are early signs of disconnection. Because aeolian vibration occurs on almost all conductors, an aeolian vibration‐based structural health‐monitoring technology for transmission lines is proposed. First, the influence of strand breakage and detachment of the fittings on the natural frequency of the conductor is described, and the influence of temperature changes on the natural frequency is discussed from the two aspects of the temperature‐dependent elastic modulus and temperature‐dependent winding angle. Second, we conducted a vibration experiment and found the law of natural frequency variation caused by broken strands, detachment of the fittings, and temperature changes. Finally, we conducted a field test to measure the conductor vibration on a 110‐kV transmission line. The results show that the natural frequency can be calculated multiple times by the stochastic subspace identification method, and the calculation results are consistent. After a period of measurement, the natural frequency variation is analyzed. Further, how to determine the structural health of the conductor from the natural frequency measured by the technique under actual operating conditions is explained.

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“…Passive control system is to dissipate seismic energy through the energy‐dissipating devices attached to the structures 8 . Due to its simple construction, low cost, convenient maintenance, and no external energy requirement, the devices (or dampers) have been widely used to mitigate the dynamic response of building structures 9–14 …”

Section: Introductionmentioning

confidence: 99%

Study on the performance of a gear‐driven rotation‐amplified rubber viscoelastic damper and its vibration control of a frame structure

Huang

2020

Struct Control Health Monit

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This paper presents an innovative gear-driven rotation-amplified rubber viscoelastic damper (GRRVD) to reduce the seismic shift responses of beam-column connections in frame structures. Based on the principle of gear transmission, the damper can amplify the rotational deformation of the beam-column joints of frame structures according to actual engineering needs and give full play to the energy dissipation capacity of rubber viscoelastic materials. First, the design philosophy, basic construction, working mechanism, and outstanding features of this damper are introduced. Then, cyclic loading test is carried out to study the influence of rotational deformation and loading frequency on the mechanical properties of the fabricated GRRVD. Additionally, a mechanical model which can precisely simulate the hysteretic characteristics of the damper is derived and then verified by numerical simulation. Finally, a nonlinear time history analysis is performed on a six-story steel frame for three cases: no dampers, dampers without deformation amplification, and dampers with deformation amplified by a factor of 2.5. The results show that the control effect of the damper can be improved by two to four times by amplifying the rotational deformation response at the beam-column joint by 2.5 times. K E Y W O R D S beam-column joints, passive control, rotational deformation-amplified damper, seismic response analysis, theoretical model 1 | INTRODUCTION Earthquake hazards and wind disasters have been causing enormous losses to human life and society. 1-5 Protection for civil engineering structures from the damage due to earthquake or strong wind is a critical issue. Various measures have been developed and implemented to reduce excessive structural dynamic responses, such as active, passive, hybrid, and semi-active control methods. 6,7 Passive control system is to dissipate seismic energy through the energydissipating devices attached to the structures. 8 Due to its simple construction, low cost, convenient maintenance, and no external energy requirement, the devices (or dampers) have been widely used to mitigate the dynamic response of building structures. 9-14 However, the seismic damage of frame structures is mostly concentrated in the area of beam-column joints, and the performance of joints has a significant effect on the overall safety and stability of the whole structure. 15-17 When the

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A pounding spacer damper and its application on transmission line subjected to fluctuating wind load

Cited by 21 publications

References 53 publications

Vibration Control of a High-Rise Slender Structure with a Spring Pendulum Pounding Tuned Mass Damper

Vibration Control of a High-Rise Slender Structure with a Spring Pendulum Pounding Tuned Mass Damper

Aeolian vibration‐based structural health monitoring system for transmission line conductors

Study on the performance of a gear‐driven rotation‐amplified rubber viscoelastic damper and its vibration control of a frame structure

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