A pipe array installation and encapsulation construction method

Abstract

A pipe array installation and encapsulation construction method. After the cushion concrete is applied, the cushion is used as the working platform, and the first and second pipes are passed through the matching first intermediate pipe pillow, the second intermediate Pipe sleepers, head pipe sleepers at the first end, head pipe sleepers at the second end, first casing, second casing, distributed reinforcement, vertical reinforcement and anti-floating reinforcement are installed into two pipe arrays, and two rows The pipe arrays are effectively connected into a whole, and then the combination of the down-pressing steel bars, side formwork and end formwork is used, and the encapsulating concrete is continuously poured layer by layer after passing the acceptance of the concealed project. This construction method is suitable for the installation of different specifications of power cable MPP pipes for open-cut construction on most urban roads. It has the characteristics of low cost, fast construction speed, beautiful workmanship, high compressive strength, and strong adaptability.

Description

technical field [0001] The invention relates to the technical field of electric power construction, in particular to a pipe array installation and encapsulation construction method. Background technique [0002] Urban power cable channels usually use prefabricated pipe galleries, cast-in-place pipe galleries, cable pipes, etc., and cable pipes are usually combined into a pipe array by combining multiple MPP pipes. MPP pipe, also known as MPP power cable protection pipe, uses modified polypropylene as the main raw material. It has the characteristics of high temperature resistance, external pressure resistance, and good insulation performance. It is a special pipe for high-voltage transmission line and cable, and is suitable for urban and rural non-excavation horizontal orientation. Drilling power pipeline project, and open excavation power pipeline project. [0003] MPP pipe array is widely used in power construction due to its low cost, fast construction speed and good ada...

AI Technical Summary

Problems solved by technology

The inner diameters of the MPP pipes used for power cables of different voltage levels are different. During the construction of the MPP pipe encapsulation concrete pouring construction, due to the different diameters of the pipes, MPP pipe blockage, casing cracking, poor installation technology, and overall pipe array often occur. Common quality defects such as floating and unsightly workmanship of construction joints

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