Structure and method of repairing corrugated steel pipe culvert by using expanded annular steel belt

Abstract

The invention discloses a structure for repairing a corrugated steel pipe culvert with an expanded annular steel belt, comprising an annular steel belt, the two ends of the annular steel belt are overlapped with each other, a first angle steel and a second angle steel are installed on the annular steel belt, and the first angle steel is set At the inner end of the overlapping part of the endless steel belt, the second angle steel is arranged on the side of the first angle steel away from the outer end of the overlapping part of the annular steel belt, and the first angle steel and the second angle steel are connected by an expansion driving device. The repair structure can effectively realize the repair and repair of the disjointed and damaged parts of the corrugated steel pipe culvert, and improve the bearing capacity and durability of the culvert. The invention also discloses a method for repairing the corrugated steel culvert, which includes the following steps: installing the ring-shaped steel belt in the corrugated steel culvert; installing the expansion drive device on the ring-shaped steel belt; adjusting the expansion drive device so that the ring-shaped steel belt Closely attached to the inner wall of the corrugated steel culvert. The method has simple procedure and convenient construction, and is suitable for working in a narrow space inside a culvert.

Description

technical field [0001] The invention belongs to the technical field of repairing corrugated steel pipe culverts, and in particular relates to a structure and a method for repairing corrugated steel pipes by using an expanding annular steel strip. Background technique [0002] As a new form of culvert, corrugated steel pipe culvert has been used in batches in my country's highway construction for more than ten years. Due to the advantages of good radial stress conditions, strong longitudinal adaptability to foundation deformation, and convenient construction, corrugated steel pipe culverts have been widely welcomed in the field of road construction, especially in road construction in unfavorable geological areas such as permafrost and soft soil. [0003] With the increase of the service life of the culvert, due to the load, the uneven deformation of the foundation, the local defects of the steel pipe (steel plate) member, and the improper compaction process of the filling, th...

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Problems solved by technology

[0003] With the increase of the service life of the culvert, due to the load, the uneven deformation of the foundation, the local defects of the steel pipe (steel plate) member, and the improper compaction process of the filling, the flange water-stop gasket and the joint of some corrugated steel pipe culverts appear. Bolt connection failure, disengagement of pipe joints, and cracking of welds in pipe joints; damages such as steel plate tearing at the bolted joints of sheet-like corrugated steel plate assembly culverts

If these disease phenomena develop further, it will lead to problems such as culvert leakage, erosion and disjoint, which will affect the radial stiffness, integrity and bearing capacity performance of the culvert, and even affect the bearing capacity of the subgrade and the performance of the road surface.

[0004] Although the above-mentioned diseases are not a common phenomenon in corrugated steel pipe culverts, due to the narrow space inside the culvert (most culverts have a diameter of less than 1.5m), it is difficult to repair

If the concrete lining repair method is used, it is necessary to weld steel bars on the original corrugated steel pipe culvert, lay steel bars (mesh) in the concrete, or use fiber concrete, the process is more cumbersome

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