Continuous beam combined shear key installation construction method and device

Abstract

The invention provides a continuous beam combined shear key installation construction method which comprises the following steps: firstly, pre-burying two groups of finish rolling deformed steel bars on a pier body, then installing a continuous beam combined shear key, and finally connecting the continuous beam combined shear key with a bracket. The invention further provides a continuous beam combined shear key which comprises an embedded part and a bearing bracket, the bearing bracket comprises a positioning plate, an upper supporting plate, a lower supporting plate and a supporting frame, the positioning plate is provided with a positioning hole, the upper supporting plate is provided with a lug plate, the supporting frame comprises supporting side plates, adjacent supporting side plates are connected through an inner reinforcing transverse plate, one side of each inner reinforcing transverse plate is connected with the surface of the positioning plate, and each supporting side plate comprises a rectangular plate part and a right trapezoid plate part. Connection of the bracket and the pier body is achieved through the frame-type bearing bracket of a reasonable structure and connecting components, the structural integrity of the pier body is guaranteed, disassembly is convenient, recycling is easy, cost is saved, and efficiency is improved.

Description

technical field [0001] The invention relates to a continuous beam combined shear key installation method and device, and belongs to the technical field of continuous beam construction for high piers of highways and railways. Background technique [0002] At present, with the rapid development of my country's economy, the status of traffic engineering construction is particularly important; especially continuous girder bridges, which have low investment costs and low construction difficulty, are more and more used in current road construction. Under such a background, many problems are often encountered in the construction of continuous beam bridges. For example, in the construction of continuous beam concrete, there are generally problems such as high ground clearance, difficult installation of supports, and difficulty in controlling the installation quality. Force key bracket. [0003] Existing shear key brackets are usually installed by slotting in the pier body. Take the...

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Problems solved by technology

However, this construction method causes the vertical steel bars and horizontal steel bars of the main structure of the pier body to be cut and broken, which is not conducive to maintaining the original design strength of the pier body.

Another example is a continuous beam cast-in-place detachable bracket disclosed in patent CN201567533U. Although the lower part of the triangular bracket is connected to the pier body through an adjustable push rod, this part does not cause damage to the pier body, but the bracket beam and the pier body The pier body is still connected to the pier body through the bracket node embedded in the pier body, which destroys the overall structure of the pier body, and the brackets on both sides of the pier body are connected by pull screws, which raises the requirements for the accuracy of the construction position of the support device , thereby reducing the construction progress

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