Auxiliary device for cantilever construction of steel box girder

Abstract

The invention discloses an auxiliary device for cantilever construction of a steel box girder, which comprises a connecting lug plate and a fixing device; at least one wire rope for providing additional stiffness to the steel beam; a jacking device, a jacking device is installed in that support segment of the steel box gird through a fixing device, so as to connect both ends of the wire rope withthe cantilever ends of the steel box girder respectively through a connecting structure after the steel girder is suspended to a preset length, and the middle section of the wire rope is restrained ina clamping groove of the top end of the jacking device to adjust the tension of at least one wire rope by controlling the height of the jacking device. the auxiliary equipment can effectively reducethe stress level of the steel beam, and can avoid the erection of the temporary cable pylon and the tension of the cable in the construction process of the traditional steel box beam cantilever method, thereby reduce the engineering quantity, shortening the construction period, and simplifying the control of the deformation of the outer side of the cantilever beam. at that same time, the auxiliaryequipment is convenient to install and can be dismantle; after the steel beam is closed, the device can be reused, thereby greatly reducing the construction cost.

Description

technical field [0001] The invention relates to the technical field of structural engineering, in particular to auxiliary equipment for cantilever construction of steel box girders. Background technique [0002] Such as figure 1 As shown, it is the traditional method of cantilevered steel box girder construction. A temporary cable tower is erected in the support area, and the cable tower is connected to the cantilever end of the steel box girder through a cable, and the cable can be tensioned at the cable tower end. or relax. In the process of cantilever construction, the vertical deformation of the cantilever end can be effectively controlled and the stress level of the steel beam can be reduced through the adjustment of the stay cables at the end of the temporary pylon. However, the erection of temporary cable towers requires a large amount of construction time and cost, and the tensioning process of the cables is cumbersome. After the construction, the temporary cable t...

AI Technical Summary

Problems solved by technology

However, the erection of temporary cable towers requires a lot of construction time and cost, and the tensioning process of the cables is cumbersome. After the construction is completed, the temporary cable towers must be removed, which increases the construction cost.

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