Optimisation of a tubular truss tower

The design of steel transmission line support towers used in practice is a lattice structure. Most often, they are made up of angled steel bars. The advantage of the angle steel section is its ease of installation, but a significant drawback is its very low bending strength. The use of circular holl...

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Bibliographic Details
Main Authors: Nagy, Szilárd, Jármai, Károly, Baksa, Attila
Format: Conference Proceeding
Language:English
Subjects:
Bend strength
Buckling
Evolutionary computation
Finite element method
Hollow sections
Minimum weight
Shape optimization
Steel structures
Transmission lines
Transmission towers
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Summary:The design of steel transmission line support towers used in practice is a lattice structure. Most often, they are made up of angled steel bars. The advantage of the angle steel section is its ease of installation, but a significant drawback is its very low bending strength. The use of circular hollow sections can result in a better minimum weight due to their better buckling strength. Steel transmission towers can usually be divided into a truncated cone shape and an upper part for fixing the conductors themselves. Because the latter can be designed in a variety of shapes, only the lower part can be optimised in this case. We use the self-adaptive differential evolution (SaDE) technique for optimisation. The mass of the structure is the optimisation’s objective function. The stresses are determined using finite element analysis. The overall and local buckling constraints have also been taken into account. Several structural layouts were examined and compared.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0159333