An eddy current tuned mass damper for cableway bridge and its design method

Abstract

The invention relates to the technical field of structural damping, in particular to an eddy current tuned mass damper for a cableway bridge, and meanwhile discloses a design method of the eddy current tuned mass damper for the cableway bridge. The eddy current tuned mass damper for the cableway bridge comprises a frame and a damping element, a plurality of guide rails are vertically arranged on the frame, the lower ends of the guide rails are fixedly connected with a bottom plate of the frame, and the upper ends of the guide rails are arranged on a top plate of the frame in a penetrating modeand connected with the top plate of the frame in a matched mode. The damping element can be assembled on the guide rails in a vertical moving mode, and a plurality of compression springs are arrangedbetween the two ends of the damping element, the top plate, and the bottom plate. Conductor plates are arranged on the upper and lower end faces of the damping element, and permanent magnet arrays are arranged on the top plate and the bottom plate. The eddy current tuned mass damper for the cableway bridge is reasonable in structure, and when the relative distance between permanent magnets and the conductor plates changes, damping force hindering relative motion is generated between the permanent magnets and the conductor plates; and energy is finally dissipated in the form of thermal energyin the conductor plates, vibration of the cableway bridge can be effectively reduced, and the advantages that damping is easy to adjust, post-maintenance is not required, the durability is good, and assembly is easy are achieved.

Description

technical field [0001] The invention relates to the technical field of structure damping, in particular to an eddy current tuned mass damper for a cableway bridge, and discloses a design method for the eddy current tuned mass damper for a cableway bridge. Background technique [0002] The cableway bridge is a bridge with high-strength steel wire ropes, steel strands or parallel steel wire bundles as the main load-bearing components. It uses anchorage as an important foundation to anchor the load-bearing cables of the entire bridge, and uses steel beams and bridge decks as local force-bearing components. It has the characteristics of small rigidity and high bearing capacity. With the large-scale construction of mountainous roads in our country, cableway bridges are more and more widely used, such as temporary bridges for water conservancy and hydropower engineering construction, used for crowds, vehicles, or transportation of construction materials; they can also be used as e...

AI Technical Summary

Problems solved by technology

However, rubber materials have disadvantages such as aging, rigidity and damping are not easy to separate, viscous dampers have problems such as oil leakage and difficult maintenance, and the damping of traditional tuned mass dampers is difficult to adjust its damping coefficient in the later stage, and its durability is poor.

Images