Expansion joint members, bridge expansion joint device and expansion joint device installing method

Abstract

The invention relates to a bridge expansion joint device. The bridge expansion joint device comprises two expansion joint members which are the same and are oppositely arranged in use; each expansion joint member comprises an expansion back, the outer side of which is connected with corresponding concrete; the inner side of the top part of the expansion back is connected with an edge beam extending inwards; the edge beam is internally provided with an installing groove for installing a rubber sealing belt; the two expansion joint members are integrally cast and molded; a connecting edge, which is formed by demolding of a communicating channel for communicating two corresponding forming mold cavities, is connected between the two expansion joint members; and the expansion back is of a vertical-wall structure with the wavy or sawteeth-shaped cross section. The bridge expansion joint device has the advantages that by use of the wavy or sawteeth-shaped expansion joint, the bonding force between the expansion joints and the concrete and the impact resistance of the expansion back are increased, and the service life of a bridge is guaranteed.

Description

technical field [0001] The invention relates to bridge components, in particular to an expansion joint component, an expansion joint device and an installation method for the bridge. Background technique [0002] The bridge expansion joint device is a device installed on bridges, especially on long-span bridges. It not only directly bears the repeated rolling of the wheels, but also because the bridge deck is discontinuous at this place, it will inevitably cause the impact of the wheels on it, so it is the most vulnerable part of the bridge structure. If this kind of device is damaged, it will not only easily cause vehicle vibration, affect driving comfort and noise, affect the service life of the vehicle, and even affect the main structure of the bridge, such as: the road surface is damaged, the bridge concrete is eroded by rainwater, and the bridge support Corrosion and other problems will directly affect the service life of the bridge. [0003] Existing bridge expansion...

AI Technical Summary

Problems solved by technology

When in use, two expansion joint members need to be set opposite to each other, and in order to prevent the deformation of the two expansion joint members due to the solidification and deformation of the concrete, it is required to fix the two expansion joint members in a mode of opposite setting with corresponding fixtures first. Then weld the connecting piece between the two expansion joint members to make the two expansion joint members relatively fixed, and then connect the two expansion joint members to the bridge deck joint to be connected through concrete. After the concrete is solidified, use a cutting tool to re- The connectors are cut off, which makes the installation of the entire bridge expansion joint device quite cumbersome and troublesome, and the labor intensity and production cost of the workers are relatively high.

Moreover, due to the small surface area of ​​the telescopic back of the flat wall structure, the bonding force of the telescopic back to the corresponding concrete is limited. It directly affects the service life of the bridge; and because the telescopic back is a flat wall structure, the direction of the rolling force of the wheels is perpendicular to the extension direction of the telescopic back, so that the rolling force of the wheels on the telescopic back cannot be obtained. Cushion and both are the maximum value, plus the structural strength of the flat-type telescopic back is weak, which will cause the telescopic back to deform after a period of impact, and the deformed telescopic back will be separated from the concrete, and it will also Cause bridge concrete to be eroded by rainwater, thereby affecting the service life of the bridge

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