Estimating the Optimum Weight for Latticed Power-Transmission Towers Using Different (AI) Techniques

Abstract

The recent expansion of power-distribution networks has motivated many researchers to study how to minimize the costs of such projects. Although transmission towers present one of the main items in the network that greatly affect the project budget, there are no clear criteria or recommendations to select the optimum bracing system that minimizes the tower weight. This research presents recommendations to select the optimum configurations for latticed power-transmission towers, segment by segment, for certain loads, as well as the aspect ratio. The research started by generating a database with different segment configurations and their weights, and then three of the most famous AI techniques (GP, ANN and EPR) were used to generate models to calculate the weights of the segments. Studying these models led to the conclusion that K-shape bracing is better that X-shape bracing for segments with aspect ratios (H/B) less than 1.0. The generated models and conclusions were verified by using existing tower designs.

Estimating the Strength of Bi-Axially Loaded Track and Channel Cold Formed Composite Column using Different AI-Based Symbolic Regression Techniques

“…-Conduct quality control checks for dimensions, tolerances, material properties, and welds (if applicable). (f) Documentation and Compliance: -Maintain detailed documentation of the cold-formed column installation, including design drawings, fabrication records, inspection reports, and any modifications made during the process [29]. -Ensure compliance with local building codes, regulations, and permits.…”

“…However, the specific procedures for tracking and channeling cold-formed columns may vary depending on the project, local building codes, and industry standards. Always consult with a qualified structural engineer or design professional to ensure proper design, fabrication, and installation of cold-formed steel columns [30]. The biaxial capacity of a cold-formed steel column refers to its ability to resist combined axial and bending loads in both the major and minor axes [11,31].…”

“…The capacity depends on various factors, including the column's cross-sectional shape, dimensions, material properties, and the loading conditions [18]. To determine the biaxial capacity of a cold-formed column, the following steps are typically followed: (a) Cross-Sectional Analysis: -Determine the geometric properties of the cold-formed column, such as the moment of inertia and section modulus, for both the major and minor axes [29]. -Calculate the effective width of the column for each axis, considering local and distortional buckling effects based on the column's geometry and boundary conditions [21].…”

“…(d) Interaction Equations: -Use interaction equations, such as the Direct Strength Method (DSM) or the Effective Width Method (EWM), to evaluate the biaxial capacity of the column [28]. -The interaction equations consider the combined effects of axial compression and bending, accounting for the resistance of the column in both axes [30,32]. (e) Check for Stability: -Evaluate the stability of the column by checking for global, local, and distortional buckling.…”