Expansion joint for perforation joint stiffening type multidirectional displacement comb plate

Abstract

The invention relates to an expansion joint for a perforation joint stiffening type multidirectional displacement comb plate. The expansion joint includes a main tooth plate and a secondary tooth plate, comb teeth of the main tooth plate and the secondary tooth plate are intersected with each other, provided with gaps, and located on the upper part of a gap between a first bridge beam body and a second bridge beam body, a plurality of first stiffening plates are fixed to the bottoms of the main tooth plate and the secondary tooth plate correspondingly, each first stiffening plate is arranged at the position of the comb teeth of the main tooth plate and the secondary tooth plate in a crossing mode, and second stiffening plates are inserted and fixed between the first stiffening plates at the bottoms of the main tooth plate and the secondary tooth plate correspondingly; and a perforated rib penetrating hole is formed at one end of each first stiffening plate, the rib penetrating holes are provided with connecting ribs allowing the first stiffening plates to be connected, a stiffening pull ring is arranged on one side of each first stiffening plate, an anchor ring is arranged on one side of each first stiffening plate, and leveling blocks are arranged on one sides of the main tooth plate and the secondary tooth plate. According to the expansion joint for the perforation joint stiffening type multidirectional displacement comb plate, the structure is simple, the strength of the tooth plates is improved, and the service life of the expansion joint is prolonged.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a seam-riding stiffened multi-directional displacement comb-tooth plate expansion joint. Background technique [0002] In order to meet the needs of bridge girder deformation, bridge expansion joints are generally installed between the two girder ends of the bridge, between the girder end and the abutment, or at the hinge position of the bridge. With the development of road transportation, road traffic volume and The load of automobiles is getting bigger and bigger, and the performance requirements for the expansion and contraction of highway bridges are constantly improving. [0003] At present, the prefabricated expansion joints produced in the same field have the following disadvantages: 1. For large-displacement cross-joint plates, when encountering an overweight vehicle, due to the heavy weight of the vehicle, the teeth of the tooth plate will be easily deformed ...

AI Technical Summary

Problems solved by technology

[0003] At present, the prefabricated expansion joints produced in the same field have the following disadvantages: 1. For large-displacement spanning plates, when encountering an overweight vehicle, due to the heavy weight of the vehicle, the teeth of the tooth plate will be easily deformed due to the suspension and no load-bearing parts, and even damage, which can easily cause traffic accidents

2. Bolts are generally used to fix the tooth plate and the bridge beam body. When a vehicle passes by, the bolts are easy to loosen and slip under the action of shear force, causing the tooth plate to tilt and fall off, causing traffic accidents

3. The comb plate is assembled by stacking multiple layers of comb plates during installation. When installing the existing comb plate, the staff needs to align the corners between the adjacent two layers of comb plates to ensure the same Alignment between adjacent comb plates, this method leads to complicated installation of comb plates, reduces comb plate installation efficiency and poor leveling effect

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