Patent ID: 8732882
Filing Date: 2014-05-27
Classification: E01D

Abstract:
1. A three-truss continuous steel truss girder-pushing device, characterized by comprising: three groups of left, middle and right supporting structures comprising a row of concrete upright posts which are disposed at each of the front and rear sides of the pier body in a bridge direction, wherein each row of concrete upright posts include three posts, and the upright posts and the pier body form the three groups of left, middle and right supporting structures in the bridge direction; a slideway girder comprising three groups of a left and right side truss slideway girders and a middle truss slideway girder which are disposed on the three groups of left, middle and right supporting structures and correspond to the left and right side trusses and the middle truss of the steel truss girder respectively, wherein each group of slideway girder has a bridge longitudinal length larger than one segment of the steel truss girder and is formed of a front and rear slideway girders and a middle slideway girder, the front and rear slideway girders are fixed to a pier cap and the concrete upright posts by pre-embedded members, the middle slideway girder is supported on a pier body, and both ends of the middle slideway girder are fixedly connected to the front and rear slideway girders via bolts respectively; two sliding blocks are arranged side by side at the front and rear ends of each of the three groups of slideway girders respectively; vertical pushing jacks and a horizontal continuous pushing jack, wherein an operation platform is provided in the front of the front slideway girder of the left and right side truss slideway girders, the horizontal continuous pushing jack is installed on the operation platform and is anchored to the rear end of the steel truss girder via a cable, four vertical pushing jacks are provided in the front of each of the left and right side truss slideway girders and the middle truss slideway girder, the sliding block located in the front of each slideway girder is disposed at the rear of the respective vertical pushing jack, and is stopped from forward movement by a positioning block.