Vibration Control of a Cable-stayed Footbridge Using the Tension Changes of Cable

Analysis of Harmonic Vibration of Cable-Stayed Footbridge under the Influence of Changes of the Cables Tension

“…An important result of the theoretical study is the proof that significant changes of the tension of selected stay cables do not affect the vibration displacements amplitude of the deck. It is a confirmation of the test results obtained in the author's own previous articles [2], [3] that it is possible to significantly change the tension of selected stay cables without causing considerable changes of eigenfrequencies corresponding to the eigenforms of the deck and pylon. Consequently, the above-mentioned tension change does not affect the vibration displacements amplitude of the deck.…”

“…In papers [2], [3], eigenproblem sensitivity analysis formulated for the structure according to the second order theory has been used in order to establish which combinations of tensions in cables lead to the fastest change in the values of chosen natural frequencies. In paper [2], the effectiveness of this method on a laboratory model of a steel cable-stayed footbridge (scale 1:10) was tested.…”

Motion-Based Design of Passive Damping Devices to Mitigate Wind-Induced Vibrations in Stay Cables

“…A transient dynamic analysis was performed. From the results of this analysis, the evolution of the displacement at the middle point of the cable (of the most unfavorable simulation) is shown in Figure 8 Once the wind velocity was simulated, the wind-induced forces could be computed (Equations (4) and (5)). The following values were considered for the definition of the wind-induced forces: (i) the density of the air, ρ = 1.23 kg/m 3 [27]; the outer diameter of the cable, D c = 0.2 m [31]; the drag coefficient, C D = 1.2 [10]; and the lift coefficient C L = 0.3 [25].…”

“…The longest cables of this bridge, which were parallel and separated by around 2 m, came into contact due to the occurrence of high-amplitude wind-induced vibrations [2]. Currently, researchers are focused on both controlling the effects of dynamic loads (such as earthquake and extreme wind [3][4][5]) on stay cables and the analysis of their static non-linear behavior [6].…”

Determining the Young’s modulus of concrete by measuring the eigenfrequencies of concrete and reinforced concrete beams

“…It is used to investigate real objects [23][24][25] and models [26]. It can be used to experimentally verify numerical calculations of modern civil engineering structures.…”