Steel trestle provided with steel anchor pile and construction method of steel trestle

Abstract

The invention relates to the field of bridge buildings, in particular to a steel trestle provided with a steel anchor pile and a construction method of the steel trestle. The steel trestle comprises a steel pipe support structure and the steel anchor pile, wherein the steel anchor pile is of a cylindrical and hollow tubular structure, reinforced concrete is poured in the steel anchor pile, the lower end of the reinforced concrete is fixed on a riverbed, and the steel anchor pile is connected to the steel pipe support structure through a first truss structure; a bailey truss which is arranged along the bridge direction, a transverse distributive girder which is arranged along the transverse bridge direction, and a longitudinal distributive girder and a bridge panel which are arranged along the bridge direction are fixed on the upper end of the steel pipe support structure from bottom to top in sequence. According to the steel trestle provided with the steel anchor pile and the construction method of the steel trestle, the horizontal force borne by a steel pipe pile is resisted by utilizing the steel anchor pile, so that stability of the steel pipe pile is effectively enhanced, furthermore, through drilling in the steel anchor pile, the depth for vibration sink of the steel anchor pile is reduced and the construction difficulty is reduced. The problem of difficulty in construction of the steel pipe pile with large flow speed in a cobblestone area is effectively solved, meanwhile, structural stability of the steel trestle is effectively improved, and the promotion value is great.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a steel trestle bridge with steel anchor piles and a construction method thereof. Background technique [0002] The lower part of the traditional steel trestle is mostly in the form of single-row steel pipe piles, and the upper structure is in the form of Bailey beams plus distribution beams. This structural form is mostly suitable for the situation where the river bed cover is thick and the flow velocity is small. However, in the shallow watershed of the middle and upper reaches of the Yellow River, due to the large flow velocity, shallow cover layer, and many pebbles, it is difficult to sink the steel pipe piles, and the bottom of the piles is easy to curl, and it is difficult to reach the design elevation. Under such harsh hydrogeological conditions, the use of traditional steel trestles will present the disadvantage of poor foundation stability. Contents of the invention ...

AI Technical Summary

Problems solved by technology

However, in the shallow river basin of the middle and upper reaches of the Yellow River, due to the large flow velocity, shallow cover layer, and many pebbles, the sinking construction of steel pipe piles is difficult, and the bottom of the pile is very easy to curl, and it is difficult to reach the design elevation. Under such harsh hydrogeological conditions, the use of traditional steel trestles will present the disadvantage of poor foundation stability

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