000013115 001__ 13115
000013115 005__ 20161114160328.0
000013115 04107 $$aeng
000013115 046__ $$k2009-06-22
000013115 100__ $$aBarbato, M.
000013115 24500 $$aStructural reliability analysis using the dp-rs-sim method

000013115 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013115 260__ $$bNational Technical University of Athens, 2009
000013115 506__ $$arestricted
000013115 520__ $$2eng$$aClassical reliability methods such as First- and Second-Order Reliability Methods (FORM and SORM) have been real breakthroughs toward feasible and reliable methods for integrating probabilistic information and uncertainty analysis into advanced design methods and modern design codes. Nevertheless, caution should be used in their applications since limits and shortcomings in terms of applicability and accuracy are known and documented, e.g., (1) existence of multiple design points (DPs), (2) nonlinearity of the limit-state surface (LSS) due to non-Gaussianess of the input process for random vibration problems, (3) nonlinearity of the LSS due to nonlinearity in the system. Current research trends highlight the importance of structural reliability analysis methodologies able to provide improved failure probability estimates without excessive increase in computational cost compared to ordinary FORM/SORM analyses. The newly developed Design Point – Response Surface – Simulation (DP-RS-Sim) method can be used for both time-invariant and time-variant structural reliability analysis. The DP-RS-Sim method combines in an innovative way the DP search used in FORM/SORM analyses with the Response Surface (RS) method and appropriate simulation techniques. In this paper, two application examples illustrate the DP-RS-Sim method: (1) a time-invariant reliability analysis of a reinforced concrete frame structure subjected to horizontal pushover loads, and (2) a time-variant reliability analysis of a single-degree-of-freedom inelastic system with force-displacement response characterized by the Menegotto-Pinto constitutive model. DP-RS-Sim-based estimations of the probability of limit-state exceedance by the benchmark structures are compared with FORM, SORM, crude Monte Carlo and Importance Sampling results in terms of accuracy and computational cost. It is shown that the DP-RS-Sim method can provide significantly more accurate failure probability estimates compared to other classical structural reliability methods.

000013115 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013115 653__ $$aStructural Reliability, Limit State Surface, Response Surface Method, Monte Carlo Simulation, Nonlinear Finite Element Analysis. Abstract. Classical reliability methods such as First- and Second-Order Reliability Methods (FORM and SORM) have been real breakthroughs toward feasible and reliable methods for integrating probabilistic information and uncertainty analysis into advanced design methods and modern design codes. Nevertheless, caution should be used in their applications since limits and shortcomings in terms of applicability and accuracy are known and documented, e.g., (1) existence of multiple design points (DPs), (2) nonlinearity of the limit-state surface (LSS) due to non-Gaussianess of the input process for random vibration problems, (3) nonlinearity of the LSS due to nonlinearity in the system. Current research trends highlight the importance of structural reliability analysis methodologies able to provide improved failure probability estimates without excessive increase in computational cost compared to ordinary FORM/SORM analyses. The newly developed Design Point – Response Surface – Simulation (DP-RS-Sim) method can be used for both time-invariant and time-variant structural reliability analysis. The DP-RS-Sim method combines in an innovative way the DP search used in FORM/SORM analyses with the Response Surface (RS) method and appropriate simulation techniques. In this paper, two application examples illustrate the DP-RS-Sim method: (1) a time-invariant reliability analysis of a reinforced concrete frame structure subjected to horizontal pushover loads, and (2) a time-variant reliability analysis of a single-degree-of-freedom inelastic system with force-displacement response characterized by the Menegotto-Pinto constitutive model. DP-RS-Sim-based estimations of the probability of limit-state exceedance by the benchmark structures are compared with FORM, SORM, crude Monte Carlo and Importance Sampling results in terms of accuracy and computational cost. It is shown that the DP-RS-Sim method can provide significantly more accurate failure probability estimates compared to other classical structural reliability methods.

000013115 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013115 720__ $$aBarbato, M.$$iGu, Q.$$iConte J., P.
000013115 8560_ $$ffischerc@itam.cas.cz
000013115 8564_ $$s377228$$uhttps://invenio.itam.cas.cz/record/13115/files/CD153.pdf$$yOriginal version of the author's contribution as presented on CD, section: Statistical and probabilistic methods in computational mechanics to treat aleatory and epistemic uncertainties in structural and/or geotechnical systems and their loading environment - i (MS).
000013115 962__ $$r13074
000013115 980__ $$aPAPER