Construction method for cover-excavation reverse method soil moulding bed

Abstract

The invention discloses a construction method for a cover-excavation reverse method soil moulding bed, overcoming the defect of the common soil moulding bed construction method. The moulding bed can be prevented from chipping and falling angles, and is convenient to fall, demoulding cost is lowered, and safety is improved. In addition, with the construction method, materials are saved, the environment is protected, cost is lowered, and demoulding efficiency and appearance quality are improved. The construction method has the beneficial effects of simple technology, strong maneuverability, strong weather adaptability, low demoulding difficulty and small demoulding cost, saving of more materials, and effective control of physical dimension of a beam plate, and ensures that the structure is in the normal stressed state; and the forming appearance quality of the beam plate concrete is improved.

Description

technical field [0001] The invention relates to a construction method of a cover-and-dig upside-down soil formwork, and belongs to the technical field of cover-dig and upside-down underground structure soil formwork construction. Background technique [0002] Cover-and-excavation soil formwork construction is a soil formwork construction method for cover-and-excavation underground structures. The surface of the plain concrete cushion is usually painted with a release agent or the surface of the plain concrete cushion is pasted with a light-weight disposable wood. Formwork method of construction. The utility model has the advantages of simple structure, high precision, convenient operation and good economy. [0003] However, the construction method of brushing the release agent on the surface of the plain concrete cushion has in practical application that the edges of the tire formwork are prone to missing edges and corners, the release agent has poor isolation effect, diffi...

AI Technical Summary

Problems solved by technology

[0003] However, the construction method of brushing the release agent on the surface of the plain concrete cushion has in practical application that the edges of the tire formwork are prone to missing edges and corners, the release agent has poor isolation effect, difficult demoulding, long demoulding time, and cost of demoulding. High, poor apparent quality, high repair costs and other shortcomings

[0004] The light-weight disposable wooden formwork on the surface of the plain concrete cushion has poor weather adaptability in practical applications, and it is prone to arching and warping deformation in exposure to the sun and rainy days, and it consumes a lot of wood and high material costs.

[0005] Therefore, finding a construction method to overcome the shortcomings of conventional earth mold construction methods is a technical problem for cover-excavation underground structures

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