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Composite pile structure for iron tower of electric transmission line

A technology of transmission line iron towers and composite piles, which is applied in the direction of basic structure engineering and construction, can solve the problems of large amount of concrete and steel bars, large amount of concrete and steel bars, and low bearing capacity of bearing layer foundation, so as to reduce project cost, The effect of reducing floor space and reducing horizontal displacement

Inactive Publication Date: 2013-06-26
SHANGHAI MUNICIPAL ELECTRIC POWER CO +2
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Problems solved by technology

[0003] The geological soil in the Shanghai area is composed of Quaternary delta deposits and sediments. It is a typical soft soil foundation. There are many soft clay layers generally distributed within 30.0m below the surface. The groundwater level is relatively high. Compared with the shallow buried foundation (straight column foundation) of iron towers in other areas, it needs to occupy a larger area and the foundation excavation is deeper, resulting in a large amount of foundation excavation, and the consumption of concrete and steel bars is also greater; in addition In order to reduce the compensation costs in the early stage during the construction of the line, more iron towers have to be located in river ponds or in narrow areas. The foundation also has the problems of large amount of concrete and steel bars and relatively high construction cost

Method used

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  • Composite pile structure for iron tower of electric transmission line

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Embodiment

[0020] Such as figure 1 As shown, a composite pile structure for transmission line towers includes a pile body 1 and pile body fasteners 2 , and the pile body fasteners 2 are arranged on both sides of the pile body 1 . There are two pile body fasteners 2, which are arranged symmetrically on both sides of the pile body 1 respectively. The pile body fastener 2 is formed by rotary jet grouting, and the distance between the rotary jet grouting point 21 and the outer surface of the pile body 1 is greater than the grouting radius. The distance between the swirling jet grouting point 21 and the outer surface of the pile is 250mm. The grouting diameter d is 400mm.

[0021] If the pile body 1 is a pressure-resistant pile body, the depth of the pile body fastener 2 is the depth of the pile body plus three times the diameter of the pile body. If the pile body 1 is an uplift pile, the depth of the pile body fastener 2 is the depth of the pile body.

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Abstract

The invention relates to a composite pile structure for an iron tower of an electric transmission line. The composite pile structure comprises a pile body and pile body fastening pieces. The pile body fastening pieces are arranged on two sides of the pile body. Compared with the prior art, the composite pile structure has the advantages of shortening length of the pile body, effectively reducing horizontal displacement, saving concrete dosages, and the like.

Description

technical field [0001] The invention relates to a structure for fixing iron towers of transmission lines, in particular to a composite pile structure for iron towers of transmission lines. Background technique [0002] The iron tower transmits the load to the foundation through the foundation, so no matter which part of the foundation or the foundation has problems or damage, it will cause adverse effects or major accidents on the upper iron tower, which will affect the safe operation of the power grid. Therefore, in the foundation design, the foundation type corresponding to the geological conditions of the project location must be selected through the analysis and research of the geology and geomorphology of the project location, following the principles of "safety and reliability, convenient construction, easy operation, environmental protection, and investment saving". At present, the commonly used foundation types in Shanghai area are: ① straight column foundation; ② si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/42E02D27/12
Inventor 倪镭房岭锋许建华张永隆陶春凤顾俊颉
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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