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An investigation was made of the minimum cost and minimum weight design of tapered steel wind mill towers based on the provisions of Eurocodes 1 and 3. The acting loads of the shell and the fatigue of the bolts were treated in a stochastic manner and their reliability indexes were considered. The variability of the average wind speed was taken into account and appropriate models for the properties of the materials were used to obtain a probabilistic model for the wind mill tower. The tower was modelled as a cantilever Bernoulli-Euler beam of variable cross section. Numerical optimization algoriths were used for the analysis. Comparison between the results of the reliability analysis and conventional optimal design was made and the differences outlined.

Additional information

Authors: DIMOU C K, National Technical University of Athens (GR);KOUMOUSIS V K, National Technical University of Athens (GR);SOLOMOS G-P, JRC Ispra (IT)
Bibliographic Reference: Paper presented: International Seminar on Industrial Application of Structural Reliability Theory, Paris (FR), October 2-3, 1997
Availability: Available from (1) as Paper EN 40925 ORA
Record Number: 199711384 / Last updated on: 1997-10-23
Original language: en
Available languages: en