A double-sided spray maintenance device and method for high-speed rail prefabricated box girders

Abstract

The invention discloses a double-side spraying and maintaining device for a high-speed rail precast bridge. The double-side spraying and maintaining device comprising a water tank, a water pump, a spraying pipe and a walking mechanism is characterized in that the water pump is connected with the water tank and the spraying pipe, the spraying pipe comprises a T-shaped top-surface spraying set and a bottom-surface spraying set, a T-shaped vertical pipe penetrates the gap between side wings of two neighboring beams, a T-shaped horizontal pipe is provided with nozzles, the top-surface spraying set is used for humidifying and cooling the top surface of the precast bridge while the bottom-surface spraying set is used for humidifying and cooling the bottom surface of the precast bridge, and each nozzle is composed of an inner shaft pipe, a rotary sleeve and a spout. The double-side spraying and maintaining device is simple in structure, reasonable in design, high in intelligent degree, convenient to use and operate, labor saving, high in spraying efficiency and good in maintenance effect.

Description

technical field [0001] The invention relates to a maintenance system, in particular to a maintenance system for a high-speed rail prefabricated bridge. Background technique [0002] High-speed rail prefabricated bridges are prefabricated with C50 high-performance concrete. After the concrete is poured, the reason why it can gradually solidify and harden is mainly due to the hydration of the concrete. Hydration requires proper temperature and humidity conditions, so in order to ensure that the concrete has suitable hardening conditions and its strength is continuously enhanced, the concrete must be cured by spraying. After the concrete is poured, if the climate is hot and the air is dry, the water in the concrete will evaporate too quickly if it is not sprayed and cured in time, resulting in dehydration, which will cause the cement particles that have formed a gel to be unable to fully hydrate and cannot be transformed into a stable cement. Crystallizes, lacks sufficient coh...

AI Technical Summary

Problems solved by technology

Although the problem of mobile spraying has been solved, the water source is fixed, and it is bound to be unable to meet the maintenance of long-distance multi-segment bridges by relying on hoses to connect to the water source of maintenance water. The working distance is limited by the length of hoses; the internal space of prefabricated bridges The temperature and humidity requirements for maintenance and side wings are different. The side wings are thin and completely open and exposed, requiring multiple humidification and cooling, while the interior space hardly needs humidification, but this patent cannot treat it differently; it is impossible to humidify and cool the upper surface of the bridge. The upper surface is directly exposed to sunlight, which requires maintenance; in addition, there are many problems such as cumbersome structure, high failure rate, and low degree of intelligence.

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