Bridge deck crack high-strength repairing method

Abstract

The invention discloses a high-strength bridge deck crack repairing method, which belongs to the technical field of bridge deck construction. The method comprises the following steps: reasonably expanding a crack, uniformly punching holes in the side wall of the crack, injecting magnetic concrete, bridging two adjacent holes in a self-connecting piece put into the crack on the basis of a magneticattraction effect, triggering self-anchoring ball on the self-connecting piece to make a gap, a chemical reaction being controlled to be generated and stopped, then the propelling effect of gas beingcontrolled. High-frequency impact is formed in a hole through the punching column to achieve punching, finally, after punching is finished, the bonding action is triggered, and the punching column isforced to be in multi-point deep connection with the hole wall permanently. Then repairing concrete is injected into the cracks, on one hand, the repairing concrete enters the self-connecting piece tobe reinforced and shaped, on the other hand, the cracks are filled, the connecting effect on the bridge floor on the two sides of the cracks is formed after forming, a tensile force is given all thetime, the secondary cracking phenomenon is avoided, and the repairing strength is greatly improved.

Description

technical field [0001] The invention relates to the technical field of bridge deck construction, in particular to a high-strength repair method for bridge deck cracks. Background technique [0002] Bridges generally refer to structures erected on rivers, lakes and seas to allow vehicles and pedestrians to pass smoothly. In order to adapt to the modern high-speed development of the transportation industry, bridges are also extended to buildings that cross mountain streams, poor geology or meet other transportation needs to make traffic more convenient. A bridge is generally composed of a superstructure, a substructure, a support and ancillary structures. The superstructure is also called a bridge span structure, which is the main structure for crossing obstacles; the substructure includes abutments, piers and foundations; Or the force transmission device installed at the supporting place of the bridge abutment; the auxiliary structure refers to the bridge head strap, conical...

AI Technical Summary

Problems solved by technology

However, at present, Portland cement and ordinary Portland cement concrete are prone to occur during use: alkali-aggregate reaction produces expansion stress that causes the concrete to swell and crack, excessive heat of hydration produces internal stress in structural concrete that causes cracks, and during use Defects such as cracks under ultra-high loads

[0004] At present, for the repair of bridge deck cracks, most of them use the method of filling seam filling materials, but the strength of this repair method is too low, and secondary cracks are prone to appear under the ultra-high load during use

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