Steel pipe pile anti-freezing cracking method suitable for bridge water construction in frozen area

Abstract

The invention relates to a steel pipe pile anti-freezing cracking method suitable for bridge water construction in a frozen area. The method comprises the following steps that an upper limiting hoop is welded to the inner wall of a steel pipe pile, a lower limiting hoop is welded below the upper limiting hoop by a certain height, four equal-length limiting rods are welded to the inner sides of theupper limiting hoop and the lower limiting hoop correspondingly, wherein every two limiting rods are opposite to each other, and a certain distance is reserved between the front ends of every two opposite limiting rods; the lower end of the steel pipe pile is inserted into a designed depth position under water, so that a water level with a certain height is kept in the steel pipe pile; a floateris arranged in the water in the steel pipe pile, and the diameter of the floater is smaller than or equal to the distance between the front ends of the two opposite limiting rods at the upper limitinghoop and the lower limiting hoop; the bottom of the floater is connected with a pendant, so that the upper end of the floater is positioned above the upper limiting hoop and is higher than the watersurface in the steel pipe pile by a certain distance, and the lower end of the floater extends into the water surface in the steel pipe pile by a certain depth and is positioned below the lower limiting hoop.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a method for preventing freezing and cracking of steel pipe piles suitable for bridge construction in frozen regions. Background technique [0002] When the bridge is being constructed in water, temporary supports such as steel trestle bridges and steel platforms shall be erected for the construction of the substructure of the bridge. The structure of the temporary support is mainly steel pipe pile + main load-bearing beam + distribution beam + bridge deck, in which the steel pipe pile is usually located in the water (river, river, lake), its lower end is inserted into the underwater rock formation, and its upper end protrudes above the water surface. Supporting the load-bearing beam, the water level inside and outside the steel pipe pile is consistent to ensure that the internal and external water pressure on the steel pipe pile wall is consistent. When construction...

AI Technical Summary

Problems solved by technology

Since the water in the steel pipe piles will also freeze, under the action of frost heaving force, it will cause brittle damage to the steel pipe piles, and in severe cases, the steel pipe piles will burst, resulting in the stability of the steel pipe pile bearing capacity and temporary support structure Sexual decline, resulting in security risks

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