Construction expansion and contraction device and method for viaduct bridge

Abstract

The invention belongs to the technical field of road construction equipment and discloses a construction expansion and contraction device and method for a viaduct bridge. The device is provided with amain rack; the main rack is provided with a main rack end, a fixing rack is fixedly welded to the main rack end, a clamping sleeve is fixed to a fixing rack, and a measurement ruler sleeves the clamping sleeve; anchoring rebars are welded to the main rack, and spiral wings are in melting connection with the anchoring rebars; an expansion and contraction joint is formed in the middle of the main rack; fixing claws are welded to the ends of the anchoring rebars, the anchoring rebars are provided with main rods, and wings are welded to the main rods; a rubber pad is clamped to the main rack, therubber pad is provided with a first rubber pad body and a second rubber pad body, and the first rubber pad body is connected to the second rubber pad through a connection buckle. According to the device, by arranging the measurement ruler, thermal expansion and cold contraction variation can be measured, and the expansion and contraction magnitude can be estimated; by arranging the rubber pad, afragment is prevented from entering the expansion and contraction joint through points, and the application effect of the expansion and contraction device is lowered. According to the device, by arranging the fixing claws and the wings, the main rack can be prevented from moving.

Description

technical field [0001] The invention belongs to the field of road construction, and in particular relates to a telescoping device method for viaduct construction. Background technique [0002] Construction expansion joints are expansion joints, which refer to a structural joint set at an appropriate part along the construction joint direction of a building or structure in order to prevent cracks or damage to the structure due to climate temperature changes (thermal expansion, cold contraction). The building or structure can be stretched horizontally along the long direction. Reserve gaps at certain distances along the length of the building to disconnect all the ground components of the building. The foundation of the building does not need to be disconnected because it is buried underground and is less affected by temperature changes. It is very important to reasonably select the gap with the proper amount of expansion and contraction. The larger the gap, the easier it is ...

AI Technical Summary

Problems solved by technology

[0004] (1) The existing viaduct construction expansion device cannot measure the size of the expansion joint, resulting in no reliable data as a reference for maintenance of the bridge, causing serious damage to the bridge

[0005] (2) In the existing telescopic device for viaduct construction, when the weld seam increases, larger fragments fall into the expansion joint, reducing the use effect of the telescopic device

[0006] (3) In the prior art, the expansion joints in the viaduct construction expansion device cannot be detected in real time, so that if there is a sudden change in the viaduct, measures cannot be taken to repair the bridge, so that danger will occur at any time

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