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Reliability based design of temporary structures

Book Contribution - Book Chapter Conference Contribution

© 2019 Taylor & Francis Group, London. Currently, scaffolds are designed based on EN 12811-1, combined with information given in different codes of good practice. Nevertheless, it is unclearwhether this design procedure results in an appropriate and consistent safety level for scaffold structures. First of all, the present study proposes appropriate target reliability levels for this kind of temporary structures. Based on these suggested safety levels, partial factors are determined. The results presented are based on simulations of different scaffold design situations in SCIA Engineer, considering samples generated by LHS. The results of these simulations are subsequently processed by applying FORM analyses for the most important limit states for failure of scaffolds, i.e. buckling of the elements and yielding. This calculation procedure allows to determine the inherent reliability level associated to current design practice. Based on these reliabilities and the target safety level, partial factors are derived using two methods: the Adjusted Partial Factor Method (APFM) and an optimisation procedure based on least-square averaging.
Book: LIFE-CYCLE ANALYSIS AND ASSESSMENT IN CIVIL ENGINEERING: TOWARDS AN INTEGRATED VISION
Pages: 2615 - 2622
Number of pages: 8
ISBN:978-1-138-62633-1
Publication year:2019