Design of Self-erecting Tower for a Wind Turbine

Ibrahim, Auwal; Diso, I.S.; Auwal, S. T.; Ibrahim, Musa Alhaji; Dambatta, M. S.; Ramesh, S.

doi:10.31695/ijerat.2020.3675

Cited by 1 publication

(1 citation statement)

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“…Other interesting concepts for steel towers include telescopic towers [64,65], wavy shells for improved local buckling resistance [66,67], self-erecting towers [68] and spirally welded steel tubes [69]. For the latter solution, on-site welding has also been contemplated [70], which if realized would create new opportunities for a wide range of promising concepts.…”

Section: Introductionmentioning

confidence: 99%

A Novel Tripod Concept for Onshore Wind Turbine Towers

Gantes

Billi

Güldogan³

et al. 2021

Energies

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A wind turbine tower assembly is presented, consisting of a lower “tripod section” and an upper tubular steel section, aiming at enabling very tall hub heights for optimum exploitation of the wind potential. The foundation consists of sets of piles connected at their top by a common pile cap below each tripod leg. The concept can be applied for the realization of new or the upgrade of existing wind turbine towers. It is adjustable to both onshore and offshore towers, but emphasis is directed towards overcoming the stricter onshore transportability constraints. For that purpose, pre-welded individual tripod parts are transported and are then bolted together during erection, contrary to fully pre-welded tripods that have been used in offshore towers. Alternative constructional details of the tripod joints are therefore proposed that address the fabrication, transportability, on-site erection and maintenance requirements and can meet structural performance criteria. The main structural features are demonstrated by means of a typical case study comprising a 180-m-tall tower, consisting of a 120-m-tall tubular superstructure on top of a 60-m-tall tripod substructure. Realistic cross-sections are calculated, leading to weight and cost estimations, thus demonstrating the feasibility and competitiveness of the concept.

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