Pouring type macromolecule polyurethane bridge expansion joint three-proofing sealing device and preparation method thereof

Abstract

The invention belongs to the technical field of telescopic devices, and discloses a pouring type macromolecule polyurethane bridge expansion joint three-proofing sealing device and a preparation method. The main technical characteristics are as follows: the device comprises section steel arranged in pairs, an upper formwork is arranged at the upper end part of the section steel; upper edge platesmatched with the section steel are arranged on the edge of the upper formwork; a pouring hole and an exhaust hole are formed in the upper formwork, a lower formwork is arranged at the lower end of thesection steel, lower edge plates matched with the section steel is arranged on the edge of the lower formwork, a pouring type waterproof material body is arranged between the upper template and the lower formwork, and end plates matched with the section steel are arranged at the two ends of the upper formwork and the two ends of the lower formwork. According to the pouring type macromolecule polyurethane bridge expansion joint three-proofing sealing device, the waterproof material body is poured on site in a pouring mode, the construction is easy and fast, the sealing effect is good, and thewaterproof effect is excellent.

Description

Technical field [0001] The invention belongs to the technical field of expansion devices, and in particular relates to a perfusion type polymer polyurethane bridge expansion joint three-proof sealing device and a preparation method. Background technique [0002] The bridge expansion device includes paired section steels, and rubber waterstops are arranged between the section steels. The rubber waterstop is manufactured in advance, and the rubber waterstop is clamped into the slot of the section steel at the construction site. At present, the leakage of bridge expansion joints has become one of the main diseases of bridge leakage. The reasons for the leakage through system analysis are as follows: First, the bottom of the rubber waterstop during concrete pouring is not vibrated, and some will still Leakage occurred, forming a concrete cavity and causing water leakage in the expansion joint. Second, the expansion joint waterproof rubber strip is not installed properly during the ...

AI Technical Summary

Problems solved by technology

At present, the leakage of bridge expansion joints has become one of the main problems of bridge leakage. Through systematic analysis, the reasons for the leakage are as follows: First, the bottom of the rubber waterstop is not vibrated during the concrete pouring process, and some will Leakage occurs, forming concrete voids and causing expansion joints to leak

Second, the waterproof rubber strips of the expansion joints were not installed properly during the installation process, causing the rubber strips to fall off, resulting in water leakage

Third, the expansion joint waterproof rubber strip itself, the expansion joint rubber strip is easily punctured by sharp objects such as stones after installation, resulting in water leakage

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