Cordwood temporary support base structure and construction method thereof

Abstract

The invention discloses a cordwood temporary support base structure. The structure comprises a beam body, a bridge pier and a support base unit, a rectangular support base unit is assembled from two A standard blocks and a B standard block, and the inclined planes of two sides of the cross section of B standard block are attached to the inclined plane of the upper A standard block and the inclined plane of the lower A standard block respectively; beam body connecting bolts are arranged in a vertical unthreaded hole of the A standard block which is located above the B standard block in a penetrating mode, and fixing nuts which are connected to the beam body connecting bolts in a threaded mode are arranged in bolt grooves; the beam body connecting bolts are upwards and fixedly connected with the beam body, and bridge pier connecting bolts are downwards and fixedly connected with the bridge pier; the beam body and the bridge pier are fixedly and integrally connected through a plurality of support base units. The invention further discloses a construction method of the cordwood temporary support base structure. The disassembling efficiency of the temporary support base is greatly improved compared with the prior art, and the construction period is shortened; no waste generates after the temporary support base is disassembled, the environment is not polluted, and the use cost is saved.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a temporary support structure and a construction method thereof. Background technique [0002] With the rapid development of road traffic, bridges have been more widely used. Many bridges adopt the method of cantilever pouring concrete continuous beams to meet the requirements of the height and width of the spanning structure. [0003] In the process of bridge construction, the bottom of the beam body of the bridge and the piers need to be fixedly connected together to ensure the stability of the construction process. After the construction is completed, it is necessary to convert the girder body and the pier into a hinge joint, so that the girder body can have a certain displacement space during the use of the bridge, so that the girder body can resolve the external force through a small displacement and improve the adaptability of the bridge and service life. [0...

AI Technical Summary

Problems solved by technology

[0004] At present, the construction methods of temporary supports for continuous girder piers mainly include the following: one is to use all-concrete temporary supports. In concrete, there is no isolation layer between the temporary support and the pier column and beam body, so the entire concrete temporary support needs to be chiseled out during demolition. Generally, the concrete grade of the temporary support exceeds C40, and it is time-consuming and labor-intensive to chisel out , there are also situations such as delays in the construction period

The second is to use sulfur mortar temporary support, which requires careful installation of the lead wires and sulfur mortar in the support structure during operation. It is easy to break the resistance wire during installation, which leads to the temporary dismantling of the pier top in the later stage. When the support is used, the resistance wire cannot be preheated, so that the sulfur mortar cannot be dissolved, and the role of the dissolved layer cannot be achieved. When dismantling, it is necessary to chisel out the entire temporary support on the top of the concrete pier, which takes a lot of time and has a long construction period

The structure of the existing and temporary supports cannot be reused, and a large amount of waste will be formed after the bridge construction is completed and dismantled, which not only wastes materials, but also pollutes the environment

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