Reliability based optimization of steel frames under seismic loading conditions using evolutionary computation

• Autorzy: Papadrakakis M. , Tsompanakis Y. , Lagaros N. D. , Friagiadakis M.

Warianty tytułu

PL

Niezawodnościowo zorientowana optymalizacja ram stalowych poddanych obciążeniom sejsmicznym za pomocą ewolucyjnej techniki obliczeniowej

• Języki publikacji: EN

Abstrakty

EN

Earthquake-resistant design of structures using probabilistic analysis and performance-based design criteria is an emerging field of structural enginering. These new analysis and design methodologies are aimed at improving the existing practice and design codes for better prediction of the structural performance. In this paper, a robust and efficient methodology is presented for performing reliability-based structural optimum design of steel frames under seismic loading. The optimization part is realised with evolution strategies, while the reliability analysis is carried out with the Monte Carlo simulation method icorporating the latin hypercube sampling technique for the reduction of the sample size. The probability of failure of the frame structures, in terms of interstorey drift limits, is determined via the multi-modal response spectrum analysis.

PL

Konstruowanie budowli o zwiększonej odporności na trzęsienia ziemi poprzez wykorzystanie rachunku prawdopodobieństwa i kryteriów eksploatacyjnych jest nowa rozwijająca się dziedzina inżynierii konstrukcji. Nowa metodologia i procedury postępowania celują w udoskonalanie istniejących programów i pakietów obliczeniowych przewidujących zachowanie się danej budowli w zadanych warunkach. W pracy zaprezentowano sztywną i wydajną metodologię optymalizacji zorientowaną na niezawodność ram stalowych poddanych obciążeniom sejsmicznym. Optymalizację oparto na obliczeniach ewolucyjnych, natomiast analizę niezawodności zrealizowano metodą Monte-Carlo, w której do redukcji wymiarowości zagadnienia wykorzystano technikę LHS (Latin Hypercube Sampling). Prawdopodobieństwo uszkodzenia konstrukcji, w sensie przekroczenia granicznych przemieszczeń międzykondygnacyjnych, obliczono za pomocą wielomodalnej analizy widma odpowiedzi konstrukcji.

Słowa kluczowe

EN

structural optimization; Monte Carlo simulation; reliability analysis; evolutionary computation; multi-modal response spectrum analysis

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2004
• Tom: Vol. 42 nr 3
• Strony: 585--608
• Opis fizyczny: Bibliogr. 32 poz., rys., tab.

Twórcy

autor

Papadrakakis M.

• Institute of Structural Analysis and Seismic Research, National Technical University of Athens

autor

Tsompanakis Y.

• Division of Mechanics, Department of Applied Sciences, Technical University of Crete, Chania

autor

Lagaros N. D.

• Institute of Structural Analysis and Seismic Research, National Technical University of Athens

autor

Friagiadakis M.

• Institute of Structural Analysis and Seismic Research, National Technical University of Athens

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