Construction Method and Application of Rigid Frame Bridge Horizontal Swivel System

Abstract

The invention provides a construction method of a rigid frame bridge horizontal swivel system and its application. A number of foundation piles are arranged under the bearing platform, a track wall is arranged in a circle on the bearing platform, and a circular track is arranged on the track wall. Spherical rollers are provided at the lower end of the body column, and are arranged on the circular track in a hexagonal shape. There is a support structure between the swivel columns, the main pier is set at the center of the cap, and the top is equipped with a base. The bridge body is set at the swivel. Above the body column, there is a jack between the swivel column and the bridge body. The card seats are arranged on both sides of the lower surface of the bridge body. There is a drag cable on the side, the other end of the drag cable is connected to the pull rod stuck in the card seat, the reaction force seat is symmetrically arranged on the platform, one end of the drag cable is connected to the swivel column, and the other end passes through the reaction force seat to connect to the traction jack. The invention effectively reduces the construction difficulty, reduces the construction workload, and improves the construction efficiency of the bridge.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a construction method and application of a rigid frame bridge horizontal swivel system. Background technique [0002] With the development of traffic engineering construction, there will be more and more overpass bridge projects that must be built similar to the way that highways and railways cross each other. In order to reduce the possible line impact caused by the construction of the overpass bridge to the existing operation, the bridge without support must be used in the construction process. Bridge swivel construction is a kind of bridge without support construction. Bridge swivel construction refers to a construction method in which the bridge structure is made (cast or spliced) at a non-design axis position and then put in place by swivel. It can It can transform the operation above the obstacle into the operation on the shore or near the ground, especially suitable for ...

AI Technical Summary

Problems solved by technology

The current pier top swivel is provided with a rotating system between the pier top and the beam bottom. When swiveling, only the bridge beam body needs to be rotated. The swivel mass is small, but the working space of the pier top is small and the safety is poor; while the pier bottom The swivel needs to rotate the bridge pier and the bridge girder together, so the weight of the swivel is relatively large, and in order to ensure the smooth performance of the bridge pier during the swivel process, it is necessary to manually apply butter and install the Teflon board, which causes the staff to operate Difficulty and workload

In addition, these bridge swivel structures are not only cumbersome to install, but also prone to deformation and damage of the bridge body during the swivel process.

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