Reinforcing structure for preventing buckling based on main material of power transmission tower

Abstract

The invention discloses a reinforcing structure for preventing buckling based on a main material of a power transmission tower. The reinforcing structure is characterized by comprising reinforcing angle steel, end fixing components and a middle fixing component, wherein the reinforcing angle steel is arranged on the outer side of a to-be-reinforced main material of the power transmission tower andis arranged diagonally relative to the to-be-reinforced main material; the end fixing components are arranged at the upper end and the lower end of the reinforcing angle steel respectively; the middle fixing component is arranged between the two end fixing components; and the reinforcing angle steel and the main material of the power transmission tower are fixedly connected into a whole body by the two end fixing components and the middle fixing component. Except for connecting ends, at other connecting positions in a reinforcing section, the main material does not need to be perforated, so that buckling instability of the main material can be prevented; eccentricity of an auxiliary main material can be reduced; end connecting bolts can ensure that the reinforcing angle steel does not slip and meanwhile can ensure that components work together when being pulled; and second connecting angle steel and rib plates in the reinforcing angle steel can effectively prevent local instability ofmain material angle steel. The reinforcing structure has the advantages of simplicity in construction, safety and reliability, low cost and remarkable effects.

Description

technical field [0001] The invention belongs to the field of structural engineering, in particular to the field of power transmission engineering, and is a buckling-preventing reinforcement structure based on the main material of a power transmission tower. Background technique [0002] The transmission tower is the main artery running through the power system. The basic components of the transmission tower include main materials, inclined materials, auxiliary materials, transverse partition materials, connecting plates and bolts. The main materials refer to: the angle steel and The materials that make up the main frame of the tower, the oblique materials refer to the cross materials that connect two adjacent main materials. According to the role of the components in the transmission tower, the components that affect the safety of the transmission tower are mainly the main materials and oblique materials. Due to the increase of the design basic wind speed in recent years, th...

AI Technical Summary

Problems solved by technology

In the first type of structure, the stress of the joints of the main material is reduced after the transverse partition is added, and the out-of-plane displacement of the oblique and auxiliary materials of the shaft is greatly reduced. On-site re-splicing of inclined materials and auxiliary materials, the construction is more difficult

The second structure increases the radius of gyration by increasing the cross-sectional area and the moment of inertia of the cross-section, thereby reducing the slenderness ratio. Holes on the material are connected to the reinforced angle steel. This structure is not only cumbersome to construct but also reduces the bearing capacity of the original main material. Stress concentration is prone to occur at the opening of the main material.

The third structure increases the anti-slip capability within the elastic range of the bolts. Although it can improve the load-carrying capacity of the connection joints, it needs to be carried out during power outage maintenance, and the removal of the bolts will increase the stress on the main material and the oblique material. distribution changes

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