Fabricated pier foundation

Abstract

The invention relates to a fabricated pier foundation. The fabricated pier foundation comprises a pier body and a protection part, wherein the protection part is installed on the front side of the pier body in the water flow direction, the protection part is provided with a top face, a bottom face and an inner side face, the top face and the bottom face are oppositely arranged, the inner side faceis connected with the inner edge of the top face and the inner edge of the bottom face, and the inner side face is attached to the outer surface of the pier body. The protection part further comprises an outer side face used for diffusing and weakening the submerged flow, the outer side face is connected with the outer edge of the top face and the outer edge of the bottom face, and the outer edgeof the top face is closer to the pier body than the outer edge of the bottom face. According to the fabricated pier foundation, the development of a horseshoe vortex system around the pier body can be inhibited by diffusing and weakening the submerged flow, and the effect of reducing local scouring is achieved; and the protection part can be prefabricated according to the shape of any pier body,and the pier body which is not scoured or scoured shallowly can be protected.

Description

technical field [0001] The invention relates to the technical field of partial scour protection of bridge foundations, in particular to an assembled bridge pier foundation. Background technique [0002] At present, when a bridge is built in a natural river, due to its water blocking effect, the local scour caused by the horseshoe vortex system formed around the bridge pier is related to the structural safety and normal operation of the bridge. As the main reason for the formation of the horseshoe vortex in front of the pier, the subsurface current is closely related to the local scour degree of the pier. Therefore, how to weaken or eliminate the submerged flow in front of the pier is one of the important means of pier protection. [0003] In related technologies, protective measures such as retaining ring and enlarged foundation all utilize the mechanism of weakening or eliminating the submerged flow in front of the pier to reduce local scour of the pier. For retainer prot...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a prefabricated pier foundation to solve the problem that in the related art, the protective measures of the retaining ring or the enlarged foundation are used, and the part outside the retaining ring or the enlarged foundation will still cause relatively large erosion to the river bed, and the retaining ring or the enlarged foundation will fail. The problem of high maintenance cost

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