Grouped anchor cable plate type foundation for power transmission tower

Abstract

The invention discloses a grouped anchor cable plate type foundation for a power transmission tower. The grouped anchor cable plate type foundation comprises a foundation upper plate, foundation lower portion ball bodies located in the ground below the foundation upper plate, an upper bearing steel base plate arranged on the foundation upper plate and a plurality of prestressed anchor cables. Each prestressed anchor cable comprises a steel stranded wire, an upper linkage plate, a lower linkage plate and a pretension spring; the steel stranded wires penetrate through the foundation upper plate, the upper ends of the steel stranded wires are fixed to the upper bearing steel base plate, the lower ends of the steel strand wires are connected with the upper linkage plates, each pretension spring is arranged between each upper linkage plate and the corresponding lower linkage plate, a stretching and contracting anchor assembly capable of being shrunk and expanded is arranged between each upper linkage plate and the corresponding lower linkage plate, and the foundation lower portion ball bodies are cast with concrete and are combined with the expanded stretching and contracting anchor assemblies into a whole in a cast manner. By means of the grouped anchor cable plate type foundation, an upper-portion transmission tower can have good dynamic load resistance.

Description

technical field [0001] The invention belongs to the power transmission technology, and in particular relates to the foundation of a power transmission tower. Background technique [0002] At present, in areas with thick overburden, traditional transmission line foundations are mainly used, such as "big excavation", "excavation and bottom expansion", "cast-in-situ piles" and other foundations, but these traditional foundations have defects, and large excavation The excavation area of ​​the foundation is large and occupies a lot of land; the construction of the excavated foundation is relatively difficult; the cost of the cast-in-situ pile foundation is relatively high. [0003] The underground part of the traditional foundation occupies a large space. When there are high constraints on the occupied space of the underground part of the foundation, due to the limitation of the calculation model of the conventional slab foundation, the area of ​​the large underground slab is oft...

AI Technical Summary

Problems solved by technology

[0002] At present, in areas with thick overburden, traditional transmission line foundations are mainly used, such as "big excavation", "excavation and bottom expansion", "cast-in-situ piles" and other foundations, but these traditional foundations have defects, and large excavation The excavation area of ​​the foundation is large and occupies a lot of land; the construction of the excavated foundation is relatively difficult; the cost of the cast-in-situ pile foundation is relatively high

[0003] The underground part of the traditional foundation occupies a large space. When there are high constraints on the occupied space of the underground part of the foundation, due to the limitation of the calculation model of the conventional slab foundation, the area of ​​the large underground slab is often large, and it is easy to fail to meet the application conditions; Although the cast-in-situ pile foundation covers a much smaller area, for areas with high environmental requirements or inconvenient transportation, when using cast-in-place pile foundations, due to the limitation of construction technology, there are certain requirements for the site and transportation conditions, often due to inability to quickly Environmental pollution caused by a good solution

[0004] The traditional foundation mainly relies on the whole foundation to resist the uplift force, downward pressure and horizontal force, but when resisting a certain control load, the local part of the traditional foundation is often not stressed or the force is small, resulting in waste of materials, increasing the cost of the foundation, and making The cost of traditional foundation is higher

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