Film-coated clean-water formwork for arc-shaped bridges and its production process

Abstract

The invention relates to an arc-shaped bridge membrane laminating as-cast finish template and a production process thereof. The template comprises melamine impregnated paper, poplar veneers and a core curtain; the arc-shaped bridge membrane laminating as-cast finish template sequentially comprises upper-layer melamine impregnated paper, an upper-layer poplar veneer, the core curtain, a lower-layer poplar veneer and lower-layer melamine impregnated paper from top to bottom; a blank assembling sequence of the core curtain from top to bottom is a long curtain, a long curtain, a short curtain and a long curtain, namely the core curtain totally comprises four layers; the upper-layer poplar veneer is coated with a modified adhesive and is vertically arrayed; the lower-layer poplar veneer is coated with the modified adhesive and is transversely arrayed; and all the layers are compounded into a whole body through gluing and hot pressing. The production process comprises: (1) preparing the melamine impregnated paper; (2) preparing the core curtain; (3) preparing the poplar veneers; (4) assembling a blank of the template; and (5) gluing, hotly pressing and molding. According to the template, a blank assembling structure is adjusted and a surface adhesive type is improved to realize a softening effect, so that the effect that the template can be randomly bent and is not cracked, deformed and broken is realized; and the effect of a manufactured bridge is good and the requirements needed by a curved-surface bridge are met.

Description

technical field [0001] The invention relates to the field of man-made boards, in particular to an arc-shaped bridge film-coated clear-water formwork and a production process thereof. Background technique [0002] Bridges are common buildings. With the rapid development of infrastructure such as highways and urban overpasses, more and more bridges need to be erected, resulting in an increasing demand for bridge formwork used in bridge construction. There is even a shortage of supply. [0003] Traditional bridge formwork is usually wooden formwork. With the development of society, timber resources are becoming increasingly scarce. The use of completely wooden bridge formwork not only has high production costs, but is also not conducive to the protection of timber resources and the ecological environment. [0004] In order to solve the above-mentioned technical problems and environmental resource problems, bamboo-based bridge formwork has been widely used instead of wooden for...

AI Technical Summary

Problems solved by technology

Although the bamboo-based bridge formwork has greatly improved in saving resources and protecting the environment, since the prototype of the bamboo-based bridge formwork is a flat plate, it cannot be bent in any arc

As a result, the overall effect of the bridge cast with bamboo-based bridge formwork is poor, and it cannot meet the requirements of curved bridges

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