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Ice-resisting and strengthening reconstruction method of existing power transmission tower

A technology of transmission tower and tower body, applied in the direction of tower, building structure, building maintenance, etc., can solve the problem of blank reinforcement method, and achieve the effect of simple construction, remarkable effect and unique design.

Inactive Publication Date: 2010-07-21
TONGJI UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As for this problem, since such accidents in foreign countries are very rare, the reinforcement method is still a blank

Method used

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  • Ice-resisting and strengthening reconstruction method of existing power transmission tower
  • Ice-resisting and strengthening reconstruction method of existing power transmission tower
  • Ice-resisting and strengthening reconstruction method of existing power transmission tower

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementation examples.

[0018] For transmission towers that need to be reinforced and reconstructed in areas that are susceptible to icing, structural analysis is first performed to determine where to add transverse sections. For such as attached figure 2 For the tower structure shown, the calculation and analysis show that adding a diaphragm at the plane position at the intersection of two primary supports at points 1 and 2 can suppress the local mode shape and significantly reduce the out-of-plane deformation of the support. For the selection of the diaphragm at these two positions, according to the size of the diaphragm, select the image 3 in the form. Since the force of each member in the diaphragm is small, the existence of the diaphragm is mainly to control the integrity of the structure, so the selection of the angle steel size does not...

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Abstract

The invention belongs to the technical field of power transmission devices, and specifically discloses an ice-resisting and strengthening reconstruction method of an existing power transmission tower. The method comprises the following steps of: increasing the number of diaphragms properly in the height range of the power transmission tower to improve the overall rigidity and stability of the existing power transmission tower; and enlarging the cross sectional area in the weak positions of the power transmission tower based on different tower shapes to improve the local bearing capacity. In consideration of the structural safety of the power transmission tower during on-site construction, the invention also provides a construction method for strengthening. The invention has the advantages of simple and convenient design and construction, low steel consumption and obvious effect, and can be widely used in the ice-resisting and strengthening reconstruction of the existing power transmission tower so as to improve the rigidity of the power transmission tower and reduce the serious social loss caused by the destruction of the power transmission tower in cold weather.

Description

technical field [0001] The invention belongs to the technical field of power transmission equipment, and in particular relates to an important structure of a power system - a power transmission tower to resist ice loads and a construction method for strengthening and reforming the power transmission tower. Background technique [0002] Beginning on January 10, 2008, most parts of southern China suffered from the blizzard, freezing rain and freezing weather that occurred once in 50 years. Severe weather has caused great damage to the power, communication, highway, railway and urban lifeline facilities in the disaster area, caused great inconvenience to the normal production and life of the people, and brought huge economic and property losses to the country. Among the ice and snow disasters, the power system was the most severely affected, and a large number of transmission towers were severely damaged, which had the greatest impact, and indirectly affected some other industr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02E04G23/04E04H12/10
Inventor 谢强李颖张勇钱之银
Owner TONGJI UNIV