Duct bank array installation and encapsulation construction method

A construction method and array technology, which is applied in the field of pipe array installation and encapsulation construction, can solve the problems of the overall floating of the pipe array, unsightly construction joints, blockage of MPP pipes, etc., to achieve convenient construction, improve construction efficiency, The effect of high compressive strength

Active Publication Date: 2020-04-24
GEZHOUBA GRP ELECTRIC POWER COMPANY
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  • Application Information

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

Method used

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  • Duct bank array installation and encapsulation construction method
  • Duct bank array installation and encapsulation construction method
  • Duct bank array installation and encapsulation construction method

Examples

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Embodiment Construction

[0037] Such as Figure 1-7 Among them, a pipe array installation and encapsulation construction method includes the following steps:

[0038] 1) Pre-installation of the first row of pipes 11 and the second row of pipes 12 and their accessories, template making, steel bar processing, and preparation for measuring and setting out before construction;

[0039] 2) Level the base after excavating the foundation pit, and complete foundation pit support and dewatering measures;

[0040] 3) After installing the cushion formwork, pour the cushion concrete 31 and maintain it, and then install the anti-floating steel bars 24 on the cushion concrete 31 in sections;

[0041] 4) Use the cushion concrete 31 as the working platform to bind the vertical reinforcement 22 on both sides and the distributed reinforcement 21;

[0042] 5) Install the first intermediate pipe sleeper 13, the second intermediate pipe sleeper 14, the first casing 17, the second casing 18, the first row of pipes 11 and...

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Abstract

The invention discloses a duct bank array installation and encapsulation construction method. After cushion concrete is constructed, a cushion layer is used as an operation platform to install first duct banks and second duct banks into two duct bank arrays through matched first middle pipe pillows, second middle pipe pillows, first end pipe pillows, second end pipe pillows, first casing pipes, second casing pipes, distribution reinforcing bars, vertical reinforcing bars and anti-floating reinforcing bars, the two duct bank arrays are effectively connected into a whole, then downward-pressingreinforcing bars, side formworks and end formworks are combined, and encapsulating concrete is continuously poured in a layered mode after concealed project acceptance. The construction method is suitable for installation of power cable MPP duct banks of different specifications in open cut construction on most urban roads, and has the advantages of being low in manufacturing cost, high in construction speed, attractive in technology, high in compressive strength, high in adaptability and the like.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G9/06E02D29/045E02D31/12
CPCE02D29/10E02D31/12H02G9/06
Inventor 刘晓峰王波邹文卫冉波
Owner GEZHOUBA GRP ELECTRIC POWER COMPANY
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