A comb-type vibration-absorbing displacement bridge telescopic device

Abstract

The invention relates to a comb type shock absorption deflection bridge expansion device. The comb type shock absorption deflection bridge expansion device comprises a fixed comb plate, a seam-across comb plate, a shock absorption deflection assembly and a baffle plate, wherein the seam-across comb plate is connected with a bridge beam body I through the shock absorption deflection assembly and embedded bars which are positioned under the seam-across comb plate, the fixed comb plate is fixedly connected with a bridge beam body II through fixing bolts and embedded bars, the shock absorption deflection assembly comprises a shock absorption deflection box, two hexagonal prism-shaped cavities are arranged in the shock absorption deflection box, each hexagonal prism-shaped cavity is internally provided with a bolt, one end, which is positioned in the corresponding hexagonal prism-shaped cavity, of each bolt is provided with a hexagonal prism-shaped bolt head which corresponds to the corresponding hexagonal prism-shaped cavity in shape, the hexagonal prism-shaped cavities are filled with soft materials, the upper surface of the shock absorption deflection box is provided with a shock absorption pad, and the baffle plate comprises a steel plate and a V-shaped reinforcing steel bar which is welded together with the steel plate. The comb type shock absorption deflection bridge expansion device disclosed by the invention has the advantages that the installation is convenient, and time and labor are saved; meanwhile, the shock resistance is good, and the damage to a bridge can be reduced.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and relates to a bridge damping mechanism, in particular to a comb-shaped damping displacement bridge expansion device. Background technique [0002] The bridge expansion device refers to the expansion device installed between the two ends of the bridge, between the beam end and the abutment, or at the hinge position of the bridge to meet the deformation requirements of the bridge deck. The bridge expansion device is an important part of the bridge. The performance of the expansion device directly affects the safety of driving and the smoothness of the bridge road. [0003] At present, my country's highway bridges mainly use steel modular expansion devices and ordinary comb-tooth plate expansion devices. In actual use, the above two telescopic devices have problems such as easy damage, affecting the beam structure, poor driving comfort, short service life, and difficult maintenance d...

AI Technical Summary

Problems solved by technology

However, this shock-absorbing displacement assembly has only one shock-absorbing displacement box. In order to achieve a good shock-absorbing effect, multiple shock-absorbing displacement assemblies need to be installed, resulting in low installation efficiency of the telescopic device; at the same time, each shock-absorbing variable The position boxes are set in isolation, resulting in weaker stability and anti-pull-off ability; in addition, this shock-absorbing displacement component is in direct contact with the bridge beam body, resulting in mutual interaction between the shock-absorbing displacement component and the bridge beam body. The interference affects the shock absorption effect of the shock-absorbing displacement components; at the same time, there is no baffle between the comb-tooth plate and the bridge beam body, resulting in interference between the comb-tooth plate and the bridge beam body, which increases the Damage to the beam body and damage to the gap-spanning comb

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