Protection structures of bridge abutment fascines and scour sheet piles and construction method

Abstract

The invention relates to protection structures of bridge abutment fascines and scour sheet piles. The protection structures comprise fascines, gravel stiffening cores, a frame type bottom plate with anchoring piles, anchoring piles, a steel wire net, a bottom grouting slurry separation plate, grouting concrete, longitudinal enclosing sheet piles, transverse enclosing sheet piles, transverse ring beams, longitudinal ring beams, suspension steel wire ropes, grouting slurry separation plates on the periphery of a bearing platform, rubble concrete and rubbles. When a bearing platform foundation ofa bridge is slightly scoured, a protection structure of gravel stiffening core fascine peripheral press is adopted, and when the bearing platform foundation of the bridge is heavily scoured, a protection structure of the scour sheet piles is adopted. The anchoring piles distributed at equal intervals are arranged on the lower portion of the frame type bottom plate with the anchoring piles, and the gravel stiffening cores are bound into a whole through the fascines and placed above the frame type bottom plate with the anchoring piles of the bearing platform foundation in bundles to form peripheral protection. The protection structures of the bridge abutment fascines and the scour sheet piles have the advantages that the adopted fascine protection is high in terrain adaptability, construction is easy, materials are convenient to obtain, the structural integrity is enhanced through enclosure of the steel wire net, and the anti-scouring capacity is improved.

Description

technical field [0001] The invention relates to a bridge pier abutment tip bundling and scouring sheet pile protection structure and a construction method, which belong to the field of civil engineering and are suitable for protection when the scouring of the bridge foundation is relatively light and for protection construction when the scouring of the bridge foundation is heavy. Background technique [0002] When it is necessary to build a bridge across a river, estuary or even a bay, the bridge foundation is subject to combined effects of water flow, waves and tides, and the local scour of the bridge piers becomes very complicated. Local scour is a natural phenomenon that reduces the bearing capacity of foundations and the stability of piers. Especially for bridges with shallow foundations, when the depth of local scour pits exceeds the buried depth of the foundation, it may also lead to bridge damage. Generally, the buried depth of the foundation is less than 5m, and the...

AI Technical Summary

Problems solved by technology

[0004] The overall stability of the existing tip bundle protection and sheet pile protection structures is poor. Although the construction is simple, it is easy to be damaged and the later maintenance costs are high.

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