From full-scale testing of steel lattice towers to stochastic reliability analysis

• Autorzy: Szafran J. , Kamiński M.
• Języki publikacji: EN

Abstrakty

EN

Analysis of the steel lattice telecommunication structure exposed to the wind pressure, whose average value is treated as the Gaussian random variable. The Least Squares Method is provided here for symbolic recovery of the polynomial responses of this structure in addition to the given uncertainty source and it serves to the twentieth order perturbation-based approximations for the first four probabilistic moments and coefficients. Static numerical analysis has been carried out by the use of the incremental BFGS (Broyden–Fletcher–Goldfarb–Shanno) procedure necessary for the so-called P-delta effect in steel structures, while the basic statistics of the ultimate limit state have been included into the formulas for the reliability indices of both first and second order. This study shows that the safety margin of such structures is definitely wider than it follows the basic Eurocodes statements, which means that designed durability period for these telecommunication structures is definitely longer.

Słowa kluczowe

EN

stochastic finite element method; full-scale experiment; lattice structures; reliability analysis; geometrical nonlinearity

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 2017
• Tom: Vol. 69, nr 4-5
• Strony: 371--388
• Opis fizyczny: Bibliogr. 35 poz., rys. kolor.

Twórcy

autor

Szafran J.

• Chair of Structural Reliability Department of Structural Mechanics Faculty of Civil Engineering, Architecture and Environmental Engineering Łódź University of Technology Al. Politechniki 6 90-924 Łódź, Poland

autor

Kamiński M.

• Chair of Structural Reliability Department of Structural Mechanics Faculty of Civil Engineering, Architecture and Environmental Engineering Łódź University of Technology Al. Politechniki 6 90-924 Łódź, Poland

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).