Concrete encapsulation method for large-diameter pipeline

Abstract

The invention relates to the technical field of concrete encapsulation for pipelines, and especially relates to a concrete encapsulation method for a large-diameter pipeline. The concrete encapsulation method for the large-diameter pipeline comprises the following steps: a plain concrete layer is laid at the bottom of a groove, and the upper surface of the plain concrete layer is flattened; and a plurality of prefabricated bases are laid on the plain concrete layer at intervals in the length direction of a pipeline needing to be laid, arc-shaped seats are integrally arranged on the prefabricated bases, the surfaces, back to the prefabricated bases, of the arc-shaped seats are arc-shaped. The concrete encapsulation method for the large-diameter pipeline further comprises the following steps: a steel bar assembly is installed, the pipeline is hoisted, and an inner steel bar cage is arranged at the outer side of the pipeline; and the pipeline is placed on the arc-shaped seats, then formworks are erected at the two sides of the pipeline, the formworks are fixedly connected with the prefabricated bases, the formworks are connected with a plurality of pressing assemblies used for forming inclined downward symmetrical acting force on the two sides of the upper portion of the pipeline, and concrete is poured between the formworks and the pipeline to form an encapsulation layer. The concrete encapsulation method for the large-diameter pipeline has the effect of reducing movement of the pipeline in the encapsulation process.

Description

technical field [0001] The present application relates to the technical field of pipeline concrete encapsulation, in particular to a large-diameter pipeline concrete encapsulation method. Background technique [0002] Concrete encapsulation of pipelines is to protect the pipelines laid underground. The material of the pipelines is first made of plastic, rubber, PVC or steel, and the inside of the pipelines is air, so that the overall density of the pipelines is small, especially for large-diameter pipelines with a diameter greater than two meters. , when concrete encapsulation is carried out on the pipeline, it is relatively easy to cause displacement of the pipeline, so the pipeline needs to be positioned to limit the movement of the pipeline during concrete encapsulation. [0003] The patent application document with the application publication number CN102776950A discloses a construction method for concrete-encapsulated light-weight pipelines, including pouring a concrete...

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Problems solved by technology

[0004] However, in the above structure, the inventor believes that the pipeline is prone to lateral movement during the process of concrete encapsulation

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