Bridge sidewalk stretching and retracting device and arrangement method thereof

Abstract

The invention provides a bridge sidewalk stretching and retracting device and an arrangement method thereof. The stretching and retracting device comprises expansion joints and sealing rods, wherein stirrups are arranged on one sides of the expansion joints; a bayonet is formed in each expansion joint; the stirrups are separately inlaid in the edges of a bridge sidewalk, and the bayonets of everytwo adjacent expansion joint are opposite; and the two ends of each sealing rod are separately arranged in the bayonets of the corresponding two expansion joints. According to the bridge sidewalk stretching and retracting device, the expansion joints and the stirrups are combined and are embedded in a bridge, the sealing rods are assembled in the bayonets of the expansion joints, the stretching and retracting device can stretch or retract by the stretching and retracting property of the sealing rods to meet requirements for stretching and retracting of the sidewalk, the deformation is large, and the adaptability is high.

Description

technical field [0001] The invention relates to the technical field of bridge construction, and more specifically, to a bridge sidewalk expansion device and a setting method thereof. Background technique [0002] In order to ensure that the bridge span structure freely deforms according to the static diagram under the influence of temperature changes, live loads, concrete shrinkage and creep, etc., it is necessary to make the bridge deck between the ends of the two girders and between the ends of the girders and the back wall of the abutment. Set horizontal expansion joints between them. Its function is not only to ensure that the beam can be deformed freely, but also to enable vehicles to pass through the joints smoothly and prevent rainwater, soil, garbage, etc. from seeping and blocking. [0003] At present, in some highways, national and provincial highways and urban bridges, sidewalks, railings and other auxiliary structures near the expansion joints should also be fre...

AI Technical Summary

Problems solved by technology

[0008] The invention provides a bridge sidewalk expansion device with simple structure, long service life, convenient replacement and low maintenance difficulty and its setting method, so as to solve the technical problems of the existing bridge sidewalk expansion device with short service life, difficult detection and replacement and poor adaptability

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