City Research Online

Topology optimisation of lattice telecommunication tower and performance-based design considering wind and ice loads

Tsavdaridis, K. D. ORCID: 0000-0001-8349-3979, Nicolaou, A., Mistry, A. D. and Efthymiou, E. (2020). Topology optimisation of lattice telecommunication tower and performance-based design considering wind and ice loads. Structures, 27, pp. 2379-2399. doi: 10.1016/j.istruc.2020.08.010

Abstract

With increasing demand of infrastructure to support power transmission and telecommunication systems, the need of erecting more towers has also been rising significantly. For many years, these towers were designed by using a conservative approach and the opportunities lying in the design optimisation of the towers were not leveraged. This paper presents the application of structural topology optimisation to lattice self-supported telecommunication towers in developing an improved solution in terms of weight-to-stiffness ratio. 2D and 3D topology optimisation studies were performed with highly optimised bracing systems reducing the amount of steel material used, thus its carbon footprint. The new exoskeleton structure is representing a lattice tower composed of ‘high-waisted’ bracing type and elliptical hollow sections (EHS). Comparative modal analyses demonstrated the structural performance of the optimised tower models. In addition, a research-led design was carried out for optimising the geometric cross-sectional properties of the optimised lattice tower subjected to quasi-static analysis followed by regression analysis. The cross-sectional parameters were progressively changed; explicitly the diameter and thickness of the members. The performance-based analysis and design of a topologically optimised lattice tower present alternatives to onerous approaches such as wind tunnel testing or finite element modelling. The results were further analysed to understand their viability in different loading design cases and the effect of cross-sections. Conclusions highlighted the benefits gained by introducing the structural topology optimisation process in the design of slender support structures.

Publication Type: Article
Additional Information: © 2020 Institution of Structural Engineers. Published by Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license. The published versioin is available at https://doi.org/10.1016/j.istruc.2020.08.010
Publisher Keywords: Structural topology optimisation, Lattice telecommunication towers, Exoskeleton design, High-waisted bracing, Shape optimisation, Wind loading, Ice loading, Quasi-static analysis
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
Departments: School of Mathematics, Computer Science & Engineering > Engineering > Civil Engineering
Date available in CRO: 02 Nov 2021 13:44
Date deposited: 2 November 2021
Date of acceptance: 3 August 2020
Date of first online publication: 26 August 2020
URI: https://openaccess.city.ac.uk/id/eprint/27041
[img]
Preview
Text - Accepted Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (5MB) | Preview

Export

Downloads

Downloads per month over past year

View more statistics

Actions (login required)

Admin Login Admin Login