Steel formwork construction method for drainage pipeline concrete encapsulation in soft soil area

Abstract

The invention relates to the field of pipeline construction, in particular to a steel formwork construction method for drainage pipeline concrete encapsulation in a soft soil area. The steel formworkconstruction method comprise the following steps that the space of steel plate piles is determined according to the pipe diameter of a drainage pipeline; a pile driver is utilized to drive the steel plate piles into the bottom of a foundation pit, a soil body between the steel plate piles is excavated, and a releasing agent is brushed on the inner surfaces of the steel plate piles on each side; first-time concrete pouring is conducted between the steel plate piles on the two sides, after concrete is initially set, the drainage pipeline is placed, and then second-time pouring is conducted; steel walings and inner supports are demounted, the pile driver is utilized to conduct pile pulling on the steel plate piles on the two sides of the drainage pipeline, and meanwhile, poured concrete is tamped through vibration; after pile pulling is completed, the height of encapsulation concrete on the upper part of the top face of the drainage pipeline is measured, and the encapsulation thickness ofthe concrete is determined; and the encapsulation concrete is covered and cured, and pipe backfilling is conducted. According to the construction method, the construction cost of concrete encapsulation is lowered, the concrete encapsulation efficiency is improved, the site operation safety factor is increased, and the concrete vibration quality is better ensured.

Description

technical field [0001] The invention relates to the field of pipeline construction, in particular to a construction method for concrete-encapsulated steel formwork of drainage pipelines in soft soil areas. Background technique [0002] With the gradual development and improvement of urban infrastructure, especially the continuous acceleration of urbanization in coastal areas, higher requirements are put forward for urban rainwater and sewage facilities, with larger pipe diameters and deeper buried depths. The conventional process of concrete encapsulation of pipelines includes formwork, concrete pouring, vibration, formwork removal, etc. It is easier to implement when the buried depth of the pipeline is relatively shallow. However, when the pipeline is deeply buried and the pipe diameter is large, especially when support is required in soft soil areas, the conventional concrete encapsulation process will not be able to meet the construction requirements. Faced with a narrow ...

AI Technical Summary

Problems solved by technology

However, when the pipeline is deeply buried and the pipe diameter is large, especially when support is required in soft soil areas, the conventional concrete encapsulation process will not be able to meet the construction requirements. Faced with a narrow working surface, it is difficult to support and remove the formwork, and concrete vibration Difficulty, poor quality, great potential safety hazards in pit bottom construction, and long time-consuming problems

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