A method suitable for assembling UHV transmission towers in severe areas in mountainous areas

Abstract

The invention discloses a method suitable of setting up ultra-high voltage transmission towers in severe mountain area. The method comprises following steps: (1) construction preparation; (2) setting up lower sections of tower legs; (3) setting up holding poles and expanding cables; (4)assembling middle and lower sections of tower legs and a tower body, and lifting and adjusting the holding poles; (5) hoisting cross-arms and tower body accessories; (6) removing the holding poles: removing a first supporting rod , a main section and a second supporting rod in sequence; (7) overhauling and self-inspecting to eliminate defects and complete construction. The method of the invention of setting up ultra-high voltage transmission towers is not limited by terrains and effectively solves the problem that it is difficult to set up tension-resistant towers; the method has the following advantages : (1) it satisfies the requirements of standardization construction and can be used to guide the standardization construction of ultra-high voltage transmission towers; (2) the combined holding pole is used to make the extension of the outer cable at the top of the holding pole not restricted by the topography, and to improve the flexibility of the geographical location of tower assembly.

Description

technical field [0001] The invention relates to the technical field of power line construction for power transmission and transformation, in particular to a method for assembling UHV transmission towers suitable for severe areas in mountainous areas, which is not limited to the deployment of stay wires at the top of poles. Background technique [0002] Tower erection construction is an important link in the construction of transmission lines, with a large amount of construction and high safety risks. For special construction environments such as eastern Tibet, western Sichuan mountains, and plateau areas with large ups and downs, vertical and horizontal ravines, cliffs, and steep slopes, the erection of UHV transmission towers is usually restricted due to the inability to deploy the cables at the top of the poles. [0003] The erection of the ultra-high voltage line iron tower itself has problems such as inconvenient installation and removal of the boom holding the pole, lar...

AI Technical Summary

Problems solved by technology

For special construction environments such as eastern Tibet, western Sichuan mountains, and plateau areas with large ups and downs, vertical and horizontal ravines, cliffs, and steep slopes, the development of the erection of UHV transmission towers is usually restricted due to the fact that the cable at the top of the pole cannot be deployed.

[0003] The erection of the ultra-high voltage line iron tower itself has problems such as inconvenient installation and removal of the boom holding the pole, large lifting weight, large longitudinal height, and the hoisting position is far away from the center of the iron tower.

[0004] In addition, on the one hand, the research on the erection process of UHV iron towers is rare in the prior art; The towers are usually assembled with internal suspension and external guyed pole holding poles or internal suspension and internal guyed wires holding poles. The former is not convenient for pulling wires in places where the tower position is located in isolated mountains, mid-mountains or even precipitous areas where the height difference changes greatly. , it is difficult to ensure that the included angle between the grounding external stay wire and the ground level is not greater than 45°, and the latter is difficult to ensure the stability of hoisting. Therefore, the existing technology is difficult to learn from the erection of UHV transmission towers in severe areas such as cliffs and steep slopes.

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