A wind-resistant and shock-absorbing bridge suspender using magnetic levitation technology for vibration isolation

Abstract

The invention discloses a wind-resistant and vibration-reduction bridge suspender for isolating vibration by using a magnetic suspension technique. A magnet exciting coil is wound on the outer side ofa suspender body in the axial direction of the suspender body, the magnet exciting coil sleeves a sleeve, and the sleeve is fixedly connected with the suspender body. A first outer shell is cylindrical, the sleeve sleeves the first outer shell, the first outer shell right faces the magnet exciting coil and is located on the outer side of the magnet exciting coil, and the magnet exciting coil is energized to form an electromagnetic force to the first outer shell, wherein the electromagnetic force is outward in the radial direction of the suspender body. When the first outer shell is subjectedto wind load on the two sides, by changing the current of the magnet exciting coil, change of the electromagnetic force can be caused, so that the first outer shell is under the electromagnetic forcewhich is outward in the radial direction of the suspender body, the effect that the suspender body is similarly separated from the first outer shell in the radial direction is achieved, only radial acting force is generated without force of friction, the stress is more easily controlled, and the energy dissipation effect is good.

Description

technical field [0001] The invention relates to the technical field of building bridges, in particular to a wind-resistant and shock-absorbing bridge suspender using magnetic levitation technology for vibration isolation. Background technique [0002] Suspenders are generally used in bridge construction. They have been exposed to wind and rain for a long time and are used in harsh environments. However, suspenders are important components in bridge structures. For example, in a suspension bridge, the suspender is a bar connecting the suspension cable and the deck system, and the load of the bridge deck system is transmitted to the suspension cable through the suspender. With the continuous development of the bridge industry, there are more and more bridges of various types. For example, when the span of a mid-support or under-support arch bridge increases, the length of the suspender is longer and softer, the more sensitive it is to the effect of wind, and the worse its win...

AI Technical Summary

Problems solved by technology

[0003] When the suspenders in the bridge are affected by the wind on both sides, it is easy to cause wind-induced vibration. In the prior art, many suspender structures have been studied, and most of them add related wind-resistant devices on both sides of the suspenders. However, due to The wind may blow to the boom from all directions or blow from both sides of the boom. Therefore, the current device has uneven wind resistance and cannot cope with blowing from multiple directions at the same time. The adaptability is poor, and many During the process of wind resistance, the force transmission of the wind resistance device will be transmitted back to the boom itself, which can solve the symptoms but not the root cause

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