Railway bridge protective scaffolding structure and construction method thereof

Abstract

The invention relates to a railway bridge protective scaffolding structure and a construction method thereof. Two rows of pile foundations are longitudinally arranged in stratums of two sides of an existing line bridge structure outside a tunnel portal, and a steel tube concrete upright column and an arched flexible hangar tunnel are arranged above the pile foundations; a longitudinal protective net cross arm is arranged on the steel tube concrete upright column, and a protective net is arranged on the steel tube concrete upright column above the protective net cross arm; a vertical pushing member is arranged on the steel tube concrete upright column. During the construction, the vertical pushing member pushes a fixed upper sleeve to complete step-by-step pushing of an upper steel tube upright column, thereby completing the construction of the steel tube upright column; concrete is pumped into the upright column and a diagonal bracing from the bottom of the steel tube upright column from bottom to top, and the final construction is completed. According to the railway bridge protective scaffolding structure, the protective scaffoldings are constructed based on the arrangement of scaffolding structures at two sides of an existing bridge, the protective scaffoldings are not connected with the existing bridge structure, a pushing method is adopted to achieve the construction of a steel tube frame, the construction method is reasonable and effective, and the limitation of arriving difficulty of heavy type hoisting equipment in a mountainous area is avoided.

Description

technical field [0001] The invention belongs to the technical field of railway building construction, and in particular relates to a railway bridge protective scaffolding structure and a construction method thereof. Background technique [0002] With the rapid development of my country's railway engineering and the continuous deepening of the western development, the railway needs to use the method of "tunnel + bridge + tunnel" to cross mountain canyons. Due to disturbances such as construction blasting and mechanical vibration, rockfall disasters often occur. According to incomplete statistics, there are more than 2,600 rockfall disaster points on railway lines across the country, and the length of the railway affected by them is about 300km. Most of them belong to bridge sections between tunnels. Once the bridge between the tunnels is damaged, it will not only affect the safe operation of the train, but even cause major safety accidents. Therefore, it is necessary to study ...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of my country's railway engineering and the continuous deepening of the western development, the railway needs to use the method of "tunnel + bridge + tunnel" to cross mountain canyons. Due to disturbances such as construction blasting and mechanical vibration, rockfall disasters often occur. According to incomplete statistics, there are more than 2,600 rockfall disaster points on railway lines across the country, and the length of the railway affected by them is about 300km. Most of them belong to bridge sections between tunnels. Once the bridge between the tunnels is damaged, it will not only affect the safe operation of the train, but even cause major safety accidents

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