Anti-resonance device for steel-concrete composite bridge

Abstract

The invention discloses an anti-resonance device for a steel-concrete composite bridge, and relates to the field of composite bridges. The anti-resonance device comprises bridge panels and an expansion joint body arranged between the two bridge panels. The expansion joint body is formed by welding a plurality of welding pieces to the bottoms of two steel pieces, a buffer assembly is connected between the middles of the steel pieces, a plurality of steel bar inserting rods corresponding to inner cylinder bases are welded to the outer side walls of the two steel pieces, and the steel bar inserting rods are inserted into the inner cylinder bases pre-buried and poured in the side walls of the bridge panels. According to the invention, when the expansion joint body is installed, firstly, a steel bar inserting rod welded to the outer side wall of a steel piece is inserted into a filling inner cavity formed in an inner cylinder base; when the steel bar inserting rod is completely inserted into the inner cylinder base, under the elastic force effect of a compression spring, the lower end of an elastic nail is clamped in a limiting hole in a matched mode, the steel bar inserting rod is preliminarily clamped and limited, the steel bar inserting rod is prevented from being disengaged, and butt joint installation is convenient.

Description

technical field [0001] The invention relates to the field of composite bridges, in particular to an anti-resonance device for steel-concrete composite bridges. Background technique [0002] When the steel-concrete composite bridge is built, the resonance problem is considered on the ground, and the vibration problem caused by pedestrians and vehicles passing the bridge needs to be considered. The bridge vibrates under the influence of external forces. When the frequency of vibration is equal to the natural frequency of the bridge material itself, it will cause bridge resonance. , resulting in a greatly increased amplitude, which increases the risk of bridge collapse and fracture due to vibration. [0003] In the process of traditional steel-concrete composite bridge construction, expansion joints are installed between the bridge panels to achieve anti-resonance effects. However, the transmission bridge expansion joint has a simple structure and general expansion performance...

AI Technical Summary

Problems solved by technology

However, the transmission bridge expansion joint has a simple structure and general expansion performance; and when installing the traditional bridge expansion joint, it is necessary to connect the pre-embedded steel bars on both sides with the pre-embedded steel bars inside the bridge deck, which is inconvenient to install

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