Suspension type steel structure bridge high-position grading beam falling device and operation method thereof

Abstract

The invention discloses a suspension type steel structure bridge high-position grading beam falling device and an operation method thereof, and the grading beam falling device comprises a protection cushion block support which is formed by the sequential vertical overlapping of a plurality of cushion blocks; the jack cushion block support comprises a cushion block base, a jack; a lower base, wherein the bottom surface of the lower base is fixed on the uppermost cushion block of the cushion block base, and the base of the jack is fixed on the upper end surface of the lower base; an upper base,wherein the bottom surface of the upper base is connected with a jacking of the jack, and the upper end surface of the upper base is used for supporting the bottom surface of a lower chord of the steel structure bridge; and a chain block which is transversely arranged on a lower chord of the steel structure bridge in a sleeving mode, a lifting hook of the chain block is connected with the lower base, and the jack cushion block support can be driven by the chain block to move up and down in the vertical direction. The device can solve the problems that stress concentration is likely to occur inthe high-position beam falling process of a steel structure bridge at present, and the safety risk is high due to foundation shaking and bridge transverse position adjustment.

Description

technical field [0001] The invention relates to a high-level graded beam dropping device for a suspended steel structure bridge and an operation method thereof, which is used for beam dropping construction after the steel structure bridge is slid into place, and belongs to the technical field of bridge engineering construction. Background technique [0002] In the construction of bridges with upper spans and existing lines, the steel structure bridges are often constructed by dragging or pushing. In traditional construction, the jack directly acts on the bridge body. At the same time, there is no reliable connection between the pads and the jack and the pad. When the traditional simple pad is used for high-level drop beam construction, the jack will be repeatedly moved and reinstalled. Trouble, between the jack and the cushion block, and between the cushion block and the cushion block are very easy to slide relative to each other during lateral adjustment, which brings great...

AI Technical Summary

Problems solved by technology

[0004] Based on the above, the present invention provides a suspension-type steel structure bridge high-level grading beam drop device and its operating method, which have the characteristics of simple operation, convenient use, fast positioning, and reliable use, so as to solve the current problem of high-level beam drop in steel structure bridges. Stress concentration that is prone to occur during the process, as well as high safety risks caused by foundation shaking and bridge lateral position adjustment

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