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Power transmission line iron tower base plane waterproof and drainage structure and construction method thereof

A technology for transmission line towers and drainage structures, applied in infrastructure engineering, soil protection, protection devices, etc., can solve problems affecting the safe and stable operation of line engineering, improve the overall life cycle, good anti-aging performance, and facilitate construction. Effect

Pending Publication Date: 2021-07-27
QINGHAI ELECTRIC POWER DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, due to the obvious increase in precipitation in Northwest my country compared with previous years, many transmission line projects built in the inland strong-ultra-saline soil area and large-thick collapsible loess area have been completed and operated for several years. Due to water immersion (dissolution) subsidence and insufficient experience in waterproof and drainage design, etc., diseases and safety hazards on the tower base and foundation occur from time to time, seriously affecting the safe and stable operation of the line project

Method used

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  • Power transmission line iron tower base plane waterproof and drainage structure and construction method thereof
  • Power transmission line iron tower base plane waterproof and drainage structure and construction method thereof
  • Power transmission line iron tower base plane waterproof and drainage structure and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] This embodiment provides a waterproof and drainage structure for the base surface of the iron tower of the transmission line, comprising an iron tower foundation 4, a foundation column 1 and a protective cap 2 arranged on the legs of the iron tower, and a layer of loose water slope 5 is arranged above the base surface of the iron tower foundation 4 The scattered water slope 5 is distributed around the foundation column 1, and the slope of the scattered water slope 5 is not less than 6%. A layer of water-repelling layer 6 is arranged on the above described water-dispersing slope 5, and the side where the water-resistant layer 6 is connected with the foundation column 1 Paste with waterproof tape, and the outer edge of the water-repelling layer 6 is embedded in the soil; the upper surface of the water-repelling layer 6 is laid with environmental soil silt to form a protective layer 7 .

Embodiment 2

[0039] This embodiment provides a waterproof and drainage structure for the base surface of the iron tower of the transmission line, comprising an iron tower foundation 4, a foundation column 1 and a protective cap 2 arranged on the legs of the iron tower, and a layer of loose water slope 5 is arranged above the base surface of the iron tower foundation 4 The scattered water slope 5 is distributed around the foundation column 1, and the slope of the scattered water slope 5 is not less than 6%. A layer of water-repelling layer 6 is arranged on the above described water-dispersing slope 5, and the side where the water-resistant layer 6 is connected with the foundation column 1 Paste with waterproof tape, and the outer edge of the water-repelling layer 6 is embedded in the soil; the upper surface of the water-repelling layer 6 is laid with environmental soil silt to form a protective layer 7 .

[0040] This embodiment adds a drainage structure on the basis of Embodiment 1. The dra...

Embodiment 3

[0042] This embodiment provides the construction method of the waterproof and drainage structure of the present invention, comprising the following steps:

[0043] Step 1: Level the base

[0044] The foundation of the iron tower is first leveled and compacted, and the base surface erosion sinkhole and base surface cracks are excavated to the bottom of the cave, and the environmental silt is used to backfill and compact in layers.

[0045] Step 2: Make a loose water slope

[0046]After the erection and tensioning of the iron tower is completed, a loose water slope shall be made on the entire base of the iron tower, and the environmental silt shall be used to spread from the middle to the surroundings. It is required to sprinkle brine in layers every 200mm for compaction, so as to make a loose water slope of no less than 6%. , the soil particles on the upper surface of the scattered water slope shall not be larger than 5mm, and shall be rolled flat and free of sharp objects.

...

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Abstract

The invention belongs to the technical field of power transmission line iron tower construction, and particularly relates to a power transmission line iron tower base plane waterproof and drainage structure and a construction method thereof. The waterproof and drainage structure is specifically characterized in that an apron slope is arranged above a base plane of an iron tower foundation, a water-resisting layer is arranged on the apron slope, and a protective layer is arranged on the water-resisting layer; and a drainage structure is further arranged and comprises a water guide groove and a drainage pipe, the water guide groove is formed in the side face of a protective cap, a water falling hole is formed in the lower surface of the water guide groove, the drainage pipe is arranged above the protective layer, one end of the drainage pipe is connected with the water falling hole in the water guide groove, and the other end of the drainage pipe extends out of the edge of the tower footing. Based on the structure, the specific construction method comprises the steps of leveling the base plane, making an apron slope layer, the water-resisting layer, the protective layer, the drainage structure and the like. According to the design of the waterproof and drainage structure, the phenomena that the water collection effect of an iron tower occurs in the rainy season, rainwater infiltrates into the foundation along the side wall of a main column of the foundation during heavy rainfall, so that the foundation is wetted (dissolved) and deforms, and the iron tower is inclined and unstable are prevented.

Description

technical field [0001] The invention belongs to the technical field of transmission line iron tower construction, and in particular relates to a base surface waterproof and drainage structure of an electric transmission line iron tower and a construction method thereof. Background technique [0002] Both saline loess and collapsible loess are special soils. Collapsible loess and saline soil are widely distributed in the inland northwest of my country. Both have the characteristics of wet (dissolved) subsidence, and there are many similarities in wet (dissolved) subsidence and foundation treatment of the two soils. In addition, inland strong-ultra-saline soil and large-thickness loess are distributed in a few areas, and loess-like saline soil with collapsibility and dissolution is distributed in some areas. There is a lack of engineering construction experience and low academic attention. The disease is serious. [0003] At present, in the treatment of the wet (dissolved) su...

Claims

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Application Information

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IPC IPC(8): E02D27/42E02D31/00E02D3/10
CPCE02D3/10E02D27/42E02D31/00
Inventor 刘宇平谭青海张秉来姚国河张建叶海金刘备曹荣泰范延彬孙生海吴海洋朱金军闫国云
Owner QINGHAI ELECTRIC POWER DESIGN INST