A bridge seamless telescopic device and its construction method

Abstract

The invention discloses a bridge seamless telescopic device and a construction method of the device. The bridge seamless telescopic device comprises a main beam span telescopic device and a bridge abutment telescopic device, wherein the main beam span telescopic device comprises a first prefabricated telescopic component and a first telescopic joint filler filling layer; the bridge abutment telescopic device comprises a second prefabricated telescopic component and a second telescopic joint filler filling layer; the first prefabricated telescopic component and the second prefabricated telescopic component are formed by reinforced joint-crossing plates and wave-shaped telescopic plates. A construction method of a telescopic device to be repaired comprises the following steps: cleaning an original bridge telescopic device, constructing a preserved mounting slot, constructing a sliding layer, assembling and mounting prefabricated telescopic components, and constructing telescopic joint filler filling layers. A construction method of a telescopic device to be constructed comprises the following steps: prefabricating and processing prefabricated telescopic components, assembling the prefabricated telescopic components on site, constructing a sliding layer, mounting prefabricated telescopic components, paving a structure and constructing telescopic joint filler filling layers. The bridge seamless telescopic device is reasonable in design, convenient to construct and high in using effect, and can be used for solving various problems of the existing telescopic device.

Description

technical field [0001] The invention belongs to the technical field of bridge expansion joint construction, and in particular relates to a bridge seamless expansion device and a construction method thereof. Background technique [0002] The bridge expansion device is a device installed at the expansion joint of the bridge deck in order to make the vehicle pass through the bridge deck smoothly and meet the needs of the bridge deck deformation. The expansion device is the weakest link in the bridge structure. Since the expansion device directly bears the impact of repeated loads on the wheels, even if there is a small unevenness, it will be subjected to a large impact under the load of the vehicle, so it is also The most vulnerable to damage and need repair replacement. Slight defects and deficiencies in design or construction will lead to early damage, which not only directly makes bridge passers-by feel uncomfortable and lacks a sense of security, but sometimes also affects...

AI Technical Summary

Problems solved by technology

The expansion device is the weakest link in the bridge structure. Since the expansion device directly bears the impact of repeated loads on the wheels, even if there is a small unevenness, it will be subjected to a large impact under the load of the vehicle, so it is also Most vulnerable to damage requiring repair and replacement

Slight defects and deficiencies in design or construction will lead to early damage, which not only directly makes bridge passers-by feel uncomfortable and lacks a sense of security, but sometimes also affects the normal use of the bridge structure itself

The reason for the general damage of the expansion device is that in addition to the increase in traffic flow and the increase in heavy vehicles (the impact effect is significantly increased), the design, construction and maintenance cannot be ignored. Moreover, the bridge deck has a sudden change in stiffness at the position of the expansion joint, and it is traveling at a high speed. Under the repeated action of vehicle load, its service life is seriously affected

Therefore, the vulnerability of bridge telescopic devices has always been a major problem in road traffic

But at present, the research on seamless structure is still in its infancy, with few structural forms and limited application.

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