Hinge structure of steel pier column of portal frame platform bridge and bearing platform and construction method thereof

Abstract

The invention discloses a hinge structure of a steel pier column of a portal frame platform bridge and a bearing platform and a construction method thereof. A column bottom steel plate is arranged at the bottom of the steel pier column, and a reinforced rib plate is welded between the column bottom steel plate and the steel pier column; a bearing platform embedded steel plate is arranged at the top surface of a concrete bearing platform, and the bottom surface of the bearing platform embedded steel plate is connected with a shear plate and a shear reinforcing steel bar arranged in the concrete bearing platform; movable hinge supports are arranged between the column bottom steel plate and the bearing platform embedded steel plate, each movable hinge support comprises an ear plate type upper rib plate and an ear plate type lower rib plate which are connected through a pin shaft and are arranged at interval, the ear plate type upper rib plate is connected with the column bottom steel plate through a movable hinge top plate, and the ear plate type lower rib plate is connected with the bearing platform embedded steel plate through a movable hinge soleplate. The hinge structure, provided by the invention, has the advantages of simple structure, convenience for manufacturing, reasonable stress, and capability of safely reliably transferring inner force and deformation generated by computing load for the novel portal frame platform bridge so as to reduce the height of a girder of the portal frame platform bridge structure, improve the landscape effect, and reduce the engineering investment.

Description

technical field [0001] The invention relates to a bridge structure of civil engineering, in particular to a joint structure form of a steel pier column and a concrete cap in an overpass structure and a construction method thereof. Background technique [0002] Pedestrian bridges are an important part of the urban landscape. On the basis of meeting the pedestrian traffic functions, they are gradually moving towards the comprehensive requirements of light structure, unique shape, large span, high bearing capacity, and convenient installation. Steel structures have gradually replaced concrete. The main material of the pedestrian bridge. Most of the current pedestrian bridges adopt the structural form of simply supported steel box girders. [0003] According to the design specification for urban pedestrian bridges and pedestrian tunnels (CJJ69-95), when the main span of pedestrian bridges with simply supported steel box girders is large, the girder height also needs to be incre...

AI Technical Summary

Problems solved by technology

Using such a large girder height will bring a series of disadvantages: the structure is thick and the landscape effect is not good; under the premise of satisfying the 4.5-meter clearance under the bridge, the number of steps to be set for the bridge will increase, which is not humanized enough

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