All-sealed vibration damping and water preventing device with large regulating quantity

Abstract

The invention relates to an all-sealed vibration damping and water preventing device with large regulating quantity, which is mainly used for a cable-stayed bridge, a suspension bridge, an arch bridge and other span structures. The all-sealed vibration damping and water preventing device is in an upper and lower flange structure and comprises an upper flange (4), a lower flange (2) and a sleeve (6), wherein the upper flange (4) and the lower flange (2) are arranged up and down; the upper flange (4) is fixedly sleeved at the lower part of the sleeve (6); a rubber gasket (3) is embedded betweenthe upper flange (4) and the lower flange (2); the sleeve (6) is internally provided with a vibration damper or a rubber centering ring (10); a first sealant (11) is filled between the vibration damper or the rubber centering ring (10) and a sleeve opening positioned on the outlet end of the sleeve (6); the end surface of the first sealant (11) is in the shape of a round table; and the outlet endof the sleeve (6) is provided with a water preventing cover (7), and a rubber sealing ring (12) and a second sealant (13) are adopted to carry out two-end seal on an upper port and a lower port of the water preventing cover (7). The all-sealed vibration damping and water preventing device ensures the sealing protection effect of a bridge in the actual operation process and meets the requirements on a long-life system of the bridge.

Description

(1) Technical field [0001] The invention relates to a fully sealed vibration damping and waterproof device with a large adjustment amount. Mainly used in cable-stayed bridges, suspension bridges, arch bridges and other span structures. It belongs to the technical field of bridge structural parts. (2) Background technology [0002] At present, waterproof devices used in bridge types such as cable-stayed bridges, suspension bridges, and arch bridges generally adopt a waterproof protective cover structure. The waterproof protective cover of this structure is affected by the installation accuracy in the construction process: there is a certain degree of eccentricity between the cable body and the embedded pipe, which leads to the failure of the original sealing structure at the end of the waterproof cover after installation. After the construction, the eccentric part is filled with glue to seal. In severe cases, it is even impossible to install. It can only be installed after ...

AI Technical Summary

Problems solved by technology

The waterproof protective cover of this structure is affected by the installation accuracy during the construction process: there is a certain degree of eccentricity between the cable body and the embedded pipe, which leads to the failure of the original sealing structure at the end of the waterproof cover after installation. After construction, fill the eccentric place with glue to seal. In severe cases, it is even impossible to install. It can only be installed after cutting and shifting the original embedded pipe.

Moreover, there are seams in the joints of bolts or hoops in this structure, and the sealing performance is poor.

All in all, the original waterproof device is not ideal in terms of sealing and waterproofing, and it is difficult to guarantee the waterproofing requirements of the bridge in the later operation process

According to an incomplete investigation, there are corrosion and anchorage failures at the anchorage ends of the bridge cables, most of which are caused by the failure of the waterproof structure.

Therefore, with the long-life system construction requirements of modern bridges, higher requirements are put forward for the service life of bridge cables, and the existing waterproof protective cover structure is increasingly unable to meet the requirements of cable body protection due to functional defects. system development requirements

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