Large excavation anticorrosion foundation of transmission line tower, and construction method

A technology of transmission lines and construction methods, which is applied in infrastructure engineering, protection devices, buildings, etc., can solve problems such as poor corrosion resistance, and achieve the effects of increasing durability, improving efficiency, and reducing maintenance costs

Pending Publication Date: 2018-04-10
NORTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP
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  • Application Information

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Problems solved by technology

[0015] The main purpose of the present invention is to solve the problem of poor corrosion resistance of existing transmission line tower foundations in medium and strong corrosion areas, to study the properties of various external anti-corrosion materials, and to design a new type of transmission line tower based on the characteristics of ...

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  • Large excavation anticorrosion foundation of transmission line tower, and construction method
  • Large excavation anticorrosion foundation of transmission line tower, and construction method
  • Large excavation anticorrosion foundation of transmission line tower, and construction method

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Embodiment Construction

[0049] Below in conjunction with accompanying drawing, the present invention is described in further detail, and described is explanation of the present invention rather than limitation.

[0050] The invention provides a construction method for large-scale excavation anti-corrosion foundation of transmission line towers. This construction method has been successfully applied in the 330kV transmission line project from Yuka (Lvliangshan) to Xitai that has been completed and put into production. 1233# foundation is taken as an example, and the specific embodiments are briefly described as follows:

[0051] The 1233# foundation is located in the saline soil area of ​​Qinghai Salt Lake. According to the judgment standard of "Code for Geotechnical Engineering Survey (2009 Edition)" (GB50021-2001), the foundation soil of this foundation has strong corrosion to the foundation concrete, and the foundation needs to be inspected. Anti-corrosion treatment improves the durability of the f...

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Abstract

The invention discloses a construction method of a large excavation anticorrosion foundation of a transmission line tower. The construction method comprises the steps of firstly excavating a foundation pit largely, preparing a concrete cushion in the foundation pit, and installing a glass fiber reinforced plastic (GRP) template bottom shell above the concrete cushion; binding foundation main bodysteel bars and column steel bars in the GRP template bottom shell, and meanwhile installing GRP template columns on the outer sides of the column steel bars; then, pouring concrete, and meanwhile installing a GRP template top shell and a FRP template top plate; and sealing the seams of GRP templates by plying epoxy resin matched with fiberglass fabric; and backfilling rammed earth after initial set of concrete. The foundation stated by the invention is high in durability and corrosion resistance, and applicable for construction of the transmission line tower at moderate and strong corrosion regions.

Description

technical field [0001] The invention relates to the technical field of foundations for transmission lines, in particular to an anti-corrosion foundation and a construction method for transmission line towers. The durability of the anti-corrosion foundation is greatly improved compared with ordinary foundations, and the construction period is greatly shortened. Background technique [0002] The safety and reliability of transmission line tower foundations are crucial to the safe operation of transmission lines. Because the foundation of the transmission line in the corrosion area is buried underground and is in contact with soil or water with high salt content all the year round, sulfate ions and chloride ions will slowly invade the interior of the foundation, causing corrosion and damage to the concrete until it loses its bearing capacity, seriously threatening Safe operation of the entire line. [0003] At present, the foundation design of domestic transmission line poles ...

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Application Information

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IPC IPC(8): E02D27/42E02D31/06E02D15/02
CPCE02D15/02E02D27/42E02D31/06
Inventor 魏鹏王学明王虎长苏赟管顺清袁俊沈巍巍朱梦伟胡程程刘军
Owner NORTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP
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