A comb tooth device for resisting erosion of pier column foundation of heavy-duty railway bridge

Abstract

The invention relates to a comb tooth device for resisting scour of a pier column foundation of a heavy-duty railway bridge, which belongs to the technical field of bridge reinforcement. Including comb teeth, L-shaped loading plate and diamond-shaped grid; the L-shaped loading plate is pre-embedded in the foundation and the river bed, and the rear end of the horizontal plate of the L-shaped loading plate is embedded in the foundation of the bridge pier column, which is embedded in the river bed The front end of the inner part is bent downwards to form a vertical plate; several comb teeth are arranged in layers and staggered on the upstream side of the pier and foundation washed by the water flow; Buried in the river bed; along the upstream direction towards the pier, the comb teeth of each layer are arranged in a staggered manner, the opening angle of the comb teeth gradually increases, and the spacing between the teeth gradually decreases. The invention effectively avoids the problem of bridge pier and foundation being eroded, and protects the river bed.

Description

technical field [0001] The invention relates to a comb tooth device for resisting scour of a pier column foundation of a heavy-duty railway bridge, which belongs to the technical field of bridge reinforcement. Background technique [0002] As an important traffic artery, bridges play an irreplaceable role in the development of society. In recent years, with the development of my country's economy, higher requirements have been put forward for the operation capacity of traffic. In order to ensure the stable improvement of operation capacity, more and more bridges across rivers and rivers have been built. Many river-crossing bridges mostly use pile foundations with a long history and wide application, which transfer the self-weight and external load of the superstructure of bridge pile foundations to the deeper bearing layer of the subsoil through pile foundations. The safety and stability of the bridge pile foundation in the complex water flow environment not only depends on...

AI Technical Summary

Problems solved by technology

At present, some bridge structures are seriously eroded, which has a negative impact on driving safety. Although various measures such as speed limit have been adopted, the transportation capacity has been seriously affected. Therefore, in order to ensure the smooth progress of heavy-duty transportation and the safety of the bridge structure itself , it is particularly urgent to carry out research on the impact of flood erosion on bridges and the research on erosion protection measures

Images