Embedded reinforcing structure and method of bridge expansion device

Abstract

The invention discloses an embedded reinforcing structure and method of a bridge expansion device. The embedded reinforcing structure is characterized in that a left pre-embedded unit, a right pre-embedded unit and an original pre-embedded structure jointly form a high-strength pre-embedded overall new structure; the steel content of the expansion joint notch is increased; the anchor strength is enhanced; the paving compactness defect, the paving flatness defect and the paving gradient defect of the asphalt at the expansion joint notch can be comprehensively overcome; other hidden constructiondefects of the expansion joint notch expansion device can be comprehensively overcome; the left pre-embedded unit and the right pre-embedded unit are machined in a factory or machined through molds on site; high-strength screws or other high-strength fasteners are adopted to be accurately and fixedly connected with anchoring points of different structural forms of the bridge expansion device; andthe anchoring strength and installation precision of the bridge expansion device and the high-precision and high-strength new notch are comprehensively improved, and rapid assembly is achieved, and rapid traffic of roads and bridges is facilitated, and the service life of the bridge expansion device is prolonged, and the driving comfort degree of the bridge expansion device is improved.

Description

technical field [0001] The invention relates to a pre-embedded reinforcement structure and method, in particular to a pre-embedded reinforcement structure and method of a bridge expansion device, belonging to the technical field of bridge engineering construction. Background technique [0002] The bridge expansion device is an important connecting part between the beam ends of the bridge. The quality and performance of the device will directly affect the durability of the entire bridge. Since the bridge expansion device is installed on the weak part of the bridge deck at the beam end, and has been subjected to various natural environmental erosion effects, due to multi-directional displacements such as cold and heat expansion, longitudinal swing, and lateral swing relative torsion during use, That is, three-way displacement, stretching and rotation. Therefore, the overall requirements for the telescopic device include: good waterproof performance, free expansion and contrac...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the ubiquitous construction defect of the existing expansion joint reserved slot, which will directly cause the bridge expansion device to be easily fatigued and easily damaged. The existing structure and installation and construction methods cannot comprehensively and systematically solve the expansion joint reserved slot The defects and deficiencies of the opening of the expansion joints lead to the low precision and strength of the expansion joint device. Now we provide a reasonable structure, a comprehensive and systematic solution to the construction defects of the reserved slots of the expansion joints, and increase the steel content of the slots of the expansion joints. It improves the anchoring strength, effectively carries out comprehensive and high-precision structural reinforcement to the original pre-embedded structure of the expansion joint notch, and greatly improves the installation accuracy and strength of the expansion joint device. It is a pre-embedded reinforcement structure for bridge expansion devices. and method

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