A construction method for the foundation of a cold box lined with thin metal plates

Abstract

The invention provides a construction method of a cold box foundation lined with box body thin metal plates. The construction method of the cold box foundation lined with the box body thin metal plates comprises the following steps of (a) constructing an earthwork and a cushion layer, (b) constructing a reinforced concrete baseboard and reinforced concrete wall boards, (c) constructing the lining box body thin metal plates in a concrete box body, (d) installing reinforcing bars in the box body, (e) installing ventilation pipes, top reinforcing bars and embedded bolts, (f) pouring concrete in the box body and the concrete on the upper portion of the cold box foundation and (g) conducting secondary concrete construction, wherein a pearlite layer on the top of the cold box foundation is constructed firstly, a foundation face layer is constructed, a two-way reinforcement fabric is arranged in the foundation face layer, and foundation acceptance is conducted finally. By the adoption of the construction method of the cold box foundation lined with the box body thin metal plates, the baseboard is constructed firstly, the lining box body thin metal plates are constructed with the baseboard as the basement, the investment of a supporting structure frame measure of the lining box body thin metal boards is reduced, the construction time of the supporting structure frame measure is shortened at the same time, and the work period is shortened.

Description

technical field [0001] The invention belongs to the technical field of building engineering construction, and in particular relates to a construction method for a cold box foundation of a box-lined thin metal plate. Background technique [0002] In the air separation plant project, the foundation of the air separation cold box is a key part of the air separation equipment, and it is the guarantee for the normal operation of the air separation equipment; , will cause frost heaving of the foundation and damage the foundation; in order to improve the quality and service life of the foundation and avoid frost heaving of the foundation, a thin metal plate is generally used to line the foundation inside the foundation to protect the foundation, and the thin metal plate is generally 0.5 ~ 2mm copper plate or stainless steel plate. [0003] And the conventional construction method of the thin metal plate lining the box inside the foundation in the prior art, as the patent of public...

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Problems solved by technology

[0003] And the conventional construction method of the thin metal plate lining the box inside the foundation in the prior art, as the patent of publication number CN102619236 A discloses a kind of compound cold box foundation construction method, Zhang Jinhui publishs " to air separation cold box foundation design improvement Suggestions”, all need to adopt steel skeleton support; since the cold box foundation is a large-volume concrete, in order to prevent temperature cracks due to excessive temperature difference between the inside and outside of the concrete, it is necessary to take measures such as pre-embedded heat-conducting steel pipes to pass cooling circulating water to reduce The internal temperature of concrete prevents the quality problems of concrete cracks; the cost of input measures is high, the construction is complicated, and it has a great impact on the construction schedule

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