Numerical Analysis of the Effects of the Bending Stiffness of the Cable and the Mass of Structural Members on Free Vibrations of Suspension Bridges

Grigorjeva, Tatjana; Kamaitis, Zenonas

doi:10.3846/13923730.2015.1055787

Cited by 11 publications

(5 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the research field of vibration-based SHM methods [12][13][14][15][16][17][18][19], the system identification is mentioned as the first step [20] to determine the current health of the structure [21]. The task involves the identification of a dynamic system, which is described by specific stiffness, damping, and mass parameters [22,23]. After that, various damage detection and localisation algorithms can be used [24].…”

Section: Introductionmentioning

confidence: 99%

Performance assessment of steel truss railway bridge with curved track

2022

View full text Add to dashboard Cite

Non-destructive Structural Health Monitoring techniques can be incorporated into bridge integrity management by assessing structural conditions. This paper describes a performance assessment of a steel truss railway bridge in Bratislava using vibration-based techniques as a further part of maintenance in addition to standard visual inspections. To obtain the necessary data, a multipurpose measuring system was used. Various types of data were measured, e.g. accelerations, strains, and displacements. The advantage of the multipurpose measuring system was that the traffic over the bridge was not restricted, even though the bridge carries only a single curved track. Two test campaigns were conducted to assess the performance of the bridge. One campaign was devoted to measuring ambient vibrations in order to perform the operational modal analysis, and the second was carried out to measure strains and displacements during a train passage. The results show a successful system identification of the structure using ambient vibrations; and a finite element model was verified and validated by a comparison of strains and displacements, as well as by modal parameters. According to the results obtained, the structural health of the investigated bridge was satisfactory.

show abstract

Section: Introductionmentioning

confidence: 99%

Performance assessment of steel truss railway bridge with curved track

2022

View full text Add to dashboard Cite

show abstract

“…Due to lower vertical frequency, lighter mass, and smaller damping, the floor system is susceptible to the human activities 10 (such as walking, running, and jumping), and vibration serviceability problem may arise if an excessive vibration is beyond a certain limit, resulting in discomfort and even psychological fear to occupants. 11 Consequently, the cost aiming to prevent the functionality of the floor system to be compromised by potential vibrations and maintaining the floor system would be high. 1 An overall research on capturing vibration performance of the long-span floor system is therefore aided for the aforementioned phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical studies on the vibration serviceability of fanshaped prestressed concrete floor

Cao

Jiang

2018

International Journal of Distributed Sensor Networks

View full text Add to dashboard Cite

An extensive experimental and numerical research was undertaken to study the vibration serviceability of a long-span fanshaped prestressed concrete floor system to be used in the lounge of a major airport. Specifically heel-drop and jumping impact tests were conducted to obtain the natural frequencies and modal damping ratios of the floor system, followed by the discussion on the distribution of peak accelerations. Running tests and simulation were also performed to capture the acceleration responses. Moreover, the finite element method was used to evaluate the dynamic characteristics. The floor system is found to have a low fundamental frequency (' 6.00 Hz) and the corresponding modal damping ratio (average ' 2.20%). The comparison of the experimental results with the published American institute of steel construction (AISC) design guide indicates that the prestressed concrete floor system exhibits satisfactory vibration perceptibility overall. The study results also show that the intensity and the location of impact excitation have a significant influence on the rate of acceleration decay. A crest factor b rp is proposed based on the test results to calculate the maximum root mean square acceleration for running for convenience.

show abstract

“…In recent years, cable structures have been intensively studied by many researchers all over the world. Among the known solutions of them, there are harmonic balance method (Lilien and Da Costa, 1994; Takahashi and Konishi, 1987), multiple scales method (Arafat and Nayfeh, 2003) (including discretization approach and direct approach), finite element method (Grigorjeva and Kamaitis, 2015; Wang et al, 2014a), finite difference method (Koh and Rong, 2004), numerical integration method (EI Ouni and Kahla, 2012), and experimental method (Xue et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Free vibration of summation and difference resonance of the vertical cable and other coupled structural members

Dong

Wang

2017

Advances in Structural Engineering

View full text Add to dashboard Cite

Free vibration of summation and difference resonance of the vertical cable and other coupled structural members were investigated in this article. A model of a vertical cable and two mass-springs was built, with the sling considered to be geometrically nonlinear, and the upper and lower connecting structural members were taken as two mass-springs. Assuming the displacement of the sling, modal superposition method and D'Alembert principle were used to derive the dynamic equilibrium equations of the coupled structure. The nonlinear dynamic equilibrium equations were studied by means of multiple scales method, and the second-order approximation solutions of single-modal motion of the system were obtained. Numerical examples were presented to discuss the amplitude responses as functions of time of free vibration, with and without damping, respectively. Additionally, fourth-order Runge-Kutta method was directly used for the nonlinear dynamic equilibrium equations to complement and verify the analytical solutions. The results show that the coupled system performs strongly nonlinear and coupled characteristics, which is useful for engineering design.

show abstract

Numerical Analysis of the Effects of the Bending Stiffness of the Cable and the Mass of Structural Members on Free Vibrations of Suspension Bridges

Cited by 11 publications

References 21 publications

Performance assessment of steel truss railway bridge with curved track

Performance assessment of steel truss railway bridge with curved track

Experimental and numerical studies on the vibration serviceability of fanshaped prestressed concrete floor

Free vibration of summation and difference resonance of the vertical cable and other coupled structural members

Contact Info

Product

Resources

About