Construction method of steel trestle

Abstract

The invention relates to the technical field of building construction, in particular to a construction method of a steel trestle, which comprises the following steps of: 1, performing construction survey; 2, inserting and driving steel pipe piles, namely uniformly arranging and inserting and driving two rows of steel pipe piles on a riverbed along the direction vertical to the flowing direction ofthe river in the following inserting and driving manner: A1, inserting, dotting and positioning; a2, cofferdam construction; a3, the steel pipe pile is in place; a4, inserting and driving steel pipepiles; a5, the pile head is cut off; a6, the cofferdam is dismantled; 3, connecting the steel pipe piles; 4, mounting an upper structure; and 5, the steel truss girder is installed. The steel trestlehas the effects that the influence of water flow on the steel pipe pile when the steel pipe pile is driven in can be reduced, the steel pipe pile is positioned more accurately, the steel pipe pile isprevented from deviating, the bearing capacity of the steel trestle is guaranteed, and the accident probability is reduced.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method for a steel trestle bridge. Background technique [0002] Steel trestle is a relatively common construction bridge, which is mainly supported by steel pipe piles, Bailey beam or section steel load-bearing, and steel plates are laid for the passage of personnel and equipment; because steel trestle can solve the problem of temporary construction passages for bridge piers in water, it is used in Both at home and abroad are widely used. [0003] Existing publication number is that the Chinese invention patent of CN108755377A discloses a kind of construction method of steel trestle bridge without covering layer in deep water, it is characterized in that, comprises the following steps: (1) steel pipe pile foundation construction: steel pipe pile adopts single-row pile The form is installed on the river bed, and the pile top elevation is higher than ...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: the steel pipe piles of the existing steel trestle bridge are directly driven into the river bottom during construction, and the steel pipe piles will be offset from the original positioning point due to the influence of water flow, thereby causing the steel trestle bridge to be damaged. The offset of the support point affects the load-bearing capacity of the steel trestle bridge, resulting in the actual load-bearing capacity of the bridge body being lower than the expected load-bearing capacity, which is prone to accidents when it is put into use

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