Power transmission line angle-steel tower single and double angle-steel transition joint design method

Abstract

The invention provides a power transmission line angle-steel tower single and double angle-steel transition joint design method. Joints comprise a crisscross shoe plank on one side of single angle-steel, a crisscross shoe plank on one side of double angle-steel, a transition plate, a single angle-steel main material, the double angle-steel and stiffening plates; the design method comprises the steps of calculating shoe plank height, 2 calculating shoe plank thickness, 3 calculating shoe plank width, 4 calculating transition plate width and 5 calculating transition plate thickness. According to the method, influences of factors such as specifications of the angle-steel main material, the thicknesses of the shoe planks on the upper side and the lower side, and the thickness and width of a horizontal plate are comprehensively considered, the influences of different design parameters on joint stress are researched by building numerical simulation model and conducting entity experiments, design parameters corresponding to the angle-steel of different specifications are summarized according to researching and experimental data, a normative and systematic design method is provided, and a basis is provided for the power transmission line angle-steel tower single and double angle-steel transition joint design. Compared with the current design situation, the method has better normalization and engineering applicability.

Description

technical field [0001] The invention relates to a structure design of a power transmission line pole tower, in particular to a design method for a single-double angle steel transition node of a power transmission line angle steel tower. Background technique [0002] In the design process of transmission towers, especially for tower structures with high design voltage levels or multiple circuits on the same tower, the internal force of the main material may exceed the bearing capacity of the largest single angle steel main material. Because of the force characteristics of the transmission tower, the upper part of the main material is less stressed, and the lower part is more stressed. The following structure may appear in the design. The main material with the lower upper part is a single angle steel, and the lower part is under greater force. The specification of the angle steel required for the main material exceeds the maximum specification of the existing single angle ste...

AI Technical Summary

Problems solved by technology

This situation leads to the design work of the transition node, which relies too much on personal experience and subjective understanding, and lacks continuity and standardization, resulting in low work efficiency, potential safety hazards, and uneven design levels. Nodes are too redundant, conservative and complex

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