Low-height bridge bracket dual-way limiting telescopic device

Abstract

The invention discloses a low-height bridge bracket dual-way limiting telescopic device. The low-height bridge bracket dual-way limiting telescopic device is located on beam plates on two sides of a bridge bracket beam line, and is composed of a fixed end, a sliding end and an anchorage system, embedded steel plates are embedded on the top faces of the beam plates on the two sides of the bracket beam line, embedded reinforcing steel bars are welded to the bottom faces of the steel plates, the steel plates are firmly anchored into the beam plates, and an anchorage system is formed; the fixed end is arranged on a bridge left bracket, and the sliding end is arranged on a bridge right bracket; vertical limiting is achieved, the beam plates on the two sides of the brackets are displaced in a coordinated manner, the vehicle impact is reduced to the maximum degree, and safety and durability of the bridge brackets can be improved; longitudinal limiting is achieved, when the bridge suffers theearthquake and other extreme conditions, the telescopic device carries out effective limiting on the longitudinal displacement of the beam plates on the two sides of the bridge brackets, the risk of beam falling caused by too large longitudinal displacement of the bridge brackets during the earthquake can be prevented, the structure is simple, the building height is small, mounting is firm, the beam plates do not need to be slotted, and construction is facilitated.

Description

technical field [0001] The invention relates to the field of bridge telescopic devices, in particular to a low-height bridge corbel two-way position-limiting telescopic device. Background technique [0002] Corbels are widely used in bridges as a kind of overlapping beam structure of girder bridges. The corbel lap structure is used between the couplets to hide the cap girder to achieve an aesthetic effect. The beam structure is natural and smooth from the elevation, without a sense of partition, and at the same time increases the headroom under the bridge. [0003] Corbel lap joints are used on the bridge, so that the size of the pier at the joint end is consistent with that of other piers, the types of pier bodies are small, the construction is very convenient, and the project cost is saved at the same time. [0004] Conventional expansion joints are generally used on bridge corbels, and expansion devices have not been specially developed for the force characteristics of t...

AI Technical Summary

Problems solved by technology

[0006] 1. There is a lack of vertical limit. When the vehicle load acts on the corbel attachment, the corbel will deflect or rise, forming a knuckle of the bridge deck, causing the impact of the vehicle, which will quickly lead to damage to the expansion joint and the corbel

[0007] 2. Lack of longitudinal limit. When the bridge encounters rare earthquakes or other extreme conditions, the longitudinal displacement of the beams and slabs on both sides of the bridge corbel is too large, and there is a risk of falling beams

[0008] 3. The building height of the telescopic device is relatively large, and the beams and slabs need to be slotted, which is inconvenient for construction

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