Analytical and Numerical Reliability Analysis of the Pratt Steel Truss
Ładowanie...
Data
2021
Autorzy
Tytuł czasopisma
ISSN czasopisma
Tytuł tomu
Wydawca
Wydawnictwo Politechniki Łódzkiej
Lodz University of Technology Press
Lodz University of Technology Press
Abstrakt
The main aim of this paper was to investigate a variation of the reliability index β for some steel
truss girder depending with respect to its length and to check the differences in numerical results obtained with
the use of numerical and analytical probabilistic calculations. Some small Pratt truss, which includes vertical
members and diagonals that slope down towards its centre was selected to make such a comparison. The span
of this truss has been adopted as the Gaussian input variable in this study, which is motivated by in situ
observations and measurements statistics as well as by its nonlinear impact on the Serviceability Limit State.
The basic probabilistic characteristics of the structural response have been determined using the 10th-order
Iterative Generalized Stochastic Perturbation Method and using Monte-Carlo Simulation also. The very
important aspects in this work are (i) a contrast of analytical and numerical results and (ii) stochastic analysis
of the load capacity in this truss joints, i.e. the stresses in the welds. Numerical results presented here have been
obtained by the Finite Element Method system Robot Structural Analysis Professional 2021 and also
via symbolic computer algebra environment MAPLE.
Opis
Słowa kluczowe
reliability index, stochastic perturbation method, Monte-Carlo simulation, finite element method, truss girder, deflection, wskaźnik niezawodności, metoda perturbacji stochastycznych, symulacja Monte-Carlo, metoda elementów skończonych, dźwigar kratownicowy, ugięcie
Cytowanie
Kamiński M., Błoński R., Analytical and Numerical Reliability Analysis of the Pratt Steel Truss. W: XXVII LSCE 2021 : Lightweight Structures in Civil Engineering. Contemporary problems. Book of Abstracts, Szafran J. (Ed.), Kamiński M. (Ed.), Wydawnictwo Politechniki Łódzkiej, Łódź 2021, s. 69-72, ISBN 978-83-66741-15-7.