Whole striding bridge lowering dismounting system based on ground supporting and construction method thereof

Abstract

The invention relates to the field of bridge dismounting, in particular to a whole striding bridge lowering dismounting system based on ground supporting and a construction method thereof. The system comprises at least two sets of supporting structures used for supporting a lowering box beam. Each supporting structure comprises a main beam and two supporting frames located at the two ends of the main beam, wherein the two ends of the main beam are fixed to the main supporting frames, the main beam is arranged in the transverse direction, a lowering power system is arranged at the upper end of the main beam and connected with a sling, and a pocket hoisting device used for hoisting the lowering box beam is arranged at the lower end of the sling. The system is simple in structure, convenient to operate and high in construction safety, environmental friendliness is achieved, energy is saved, and extremely high popularization value is achieved.

Description

technical field [0001] The invention relates to the field of bridge demolition, in particular to a ground-supported full-span bridge demolition system and a construction method thereof. Background technique [0002] Due to the needs of economic development, the relevant infrastructure construction is constantly improving. Road and bridge construction is the foundation of infrastructure construction. Old bridges in infrastructure construction that are no longer suitable for economic construction need to be demolished. The usual bridge demolition includes blasting demolition or straight bridge static tear down. For some bridges built in downtown areas or without blasting conditions, the method of demolition by blasting cannot be realized, and static demolition of bridges is required. Static demolition of bridges refers to the use of large cutting equipment to cut bridges into small pieces that are easy to lower, so that the method of dismantling bridges is safe, stable, and d...

AI Technical Summary

Problems solved by technology

[0003] However, in the field of static cutting and block demolition of bridges, due to the consideration of safety and structural system changes, it is often necessary to erect a large number of temporary supports and divide the original bridge into multiple small blocks for cutting and demolition. Large, the demolition time is prolonged, and the economy is poor. Therefore, it is necessary to divide the bridge into large pieces and increase the lifting weight, which brings problems such as high safety risks and high hoisting requirements during the construction process.

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