High-strength aluminum alloy curled edge stiffening profile connecting structure of power transmission tower

Abstract

The invention discloses a high-strength aluminum alloy curled edge stiffening profile connecting structure of a power transmission tower, which comprises a power transmission tower body, the power transmission tower body comprises a tower body and a cross arm arranged on the tower body, the tower body is formed by connecting a tower body main material and a tower body inclined material, the cross arm is formed by connecting a cross arm main material and a cross arm inclined material, the tower body main material adopts a high-strength aluminum alloy curled and stiffened cross-shaped profile; the tower body inclined material, the cross arm main material and the cross arm inclined material adopt high-strength aluminum alloy curled and stiffened angular profiles; a double-face connecting structure is adopted between every two adjacent tower body main materials, a double-face connecting structure is adopted between every two adjacent cross arm main materials, a single-face connecting structure is adopted between every two adjacent tower body inclined materials, and gusset plate single-side connecting structures are adopted for the tower body inclined materials, the cross arm main materials and the connecting positions of the cross arm inclined materials and the tower body main materials, namely high-strength aluminum alloy gusset plates and bolts are adopted for connection. The profile and the corresponding connecting structure have the characteristics of light self weight, corrosion resistance, no need of galvanizing, high comprehensive economic benefit and the like.

Description

technical field [0001] The invention relates to the technical field of truss structure systems, in particular to a connection structure of high-strength aluminum alloy crimping and stiffening profiles for power transmission towers. Background technique [0002] The advancement of urbanization makes the route of transmission lines gradually migrate from the suburbs to remote mountainous areas. At present, transmission poles and towers are generally constructed of hot-rolled angle steel, and the weight of a single piece is relatively heavy. In some remote mountainous areas, transportation is inconvenient, steel components still need to be transported by manpower, and large construction machinery cannot enter the site, which increases the cost of construction and installation and safety hazards. At the same time, for some heavy industrial areas and coastal cities, the atmospheric environment is highly corrosive. In order to avoid corrosion of steel components, galvanized anti-...

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Problems solved by technology

In some remote mountainous areas, transportation is inconvenient, steel components still need to be transported by manpower, and large construction machinery cannot enter the site, which increases the cost of construction and installation and safety hazards

At the same time, for some heavy industrial areas and coastal cities, the atmospheric environment is highly corrosive. In order to avoid corrosion of steel components, it is usually necessary to use galvanized anti-corrosion technology, which not only increases the cost, but also causes great pollution to the environment, and the galvanized protective layer is effective. Limited durability, regular inspection and anti-rust paint are still required

In addition, the torsional moment of inertia of hot-rolled angle steel is low, and it is prone to bending and torsional instability. When it is applied to a transmission tower with a large load, it is usually necessary to connect the angle steel to a double-leg or four-leg cross-section through a filler plate, which increases the amount of materials. and transmission tower self-weight

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