Overwintering storehouse surface thermal-insulation structure used for grinding concrete in severe cold area

Abstract

The invention discloses an overwintering storehouse surface thermal-insulation structure used for grinding concrete in a severe cold area. The overwintering storehouse surface thermal-insulation structure comprises a framework structure which is arranged on the surface of an overwintering concrete storehouse surface, and consists of stand columns and beams as well as a three-ply board, a geomembrane, a cotton quilt and a ballasting sand bag which are laid on the upper surface of the framework structure in sequence; and a sealed heat-insulation heat-preservation air layer formed by the framework structure utilizes air to insulate heat, so that concrete achieves the heat storage and heat-preservation effect. The geomembrane is a four-cloth one-membrane geomembrane; the cotton quilt comprisesfour to five layers; the concrete storehouse surface is a plane or an inclined plane; and the framework structure which consists of stand columns and beams is manufactured in a plant or is manufactured on the site. The invention provides the overwintering storehouse surface thermal-insulation structure used for grinding concrete in the severe cold area, and the overwintering storehouse surface thermal-insulation structure keeps simple economical efficiency of a heat storage method, improves thermal-insulation effect, and effectively realizes coordinating and unifying of operability, economical efficiency and high efficiency of thermal insulation of the concrete storehouse surface.

Description

technical field [0001] The invention relates to a concrete overwintering warehouse surface insulation structure, especially for the overwintering surface insulation structure of roller compacted concrete in severe cold areas, to be used for the construction of roller compacted concrete gravity dams in severe cold areas, construction in cold seasons or intermittence periods in winter A storage surface insulation structure. Background technique [0002] Roller compacted concrete construction in severe cold areas has a winter break period, and the long wintering period is cold. If the roller compacted concrete is not protected, it will cause cracks in the concrete due to excessive temperature difference, which will cause water leakage in the dam body and cause accidents. [0003] The traditional methods of concrete insulation and maintenance in low temperature seasons include heat storage method, greenhouse method, electric heating method and steam method. The greenhouse metho...

AI Technical Summary

Problems solved by technology

During the construction process, a layer of plastic film with a thickness of 0.6 mm was used for thermal insulation of the overwintering surface of the roller compacted concrete dam, and then two layers of 2 cm thick polyethylene insulation quilts were laid on it, and 13 layers of 2 cm thick cotton quilts were laid on it, and finally A layer of three-proof canvas is laid on the top. In order to strengthen heat preservation and prevent side wind from entering, a windbreak wall with a height of 1.0m and a width of 0.8m is built with sand belts on the downstream side of the wintering surface. Spray 10cm thick polyurethane rigid foam within the scope, the insulation measures are cumbersome and complicated, the workload increases, the project cost is high and the insulation effect is not significant

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