000004563 001__ 4563
000004563 005__ 20141118192706.0
000004563 0177_ $$2doi$$a10.3850/978-981-07-2219-7_P309

000004563 0247_ $$210.3850/978-981-07-2219-7_P309
$$adoi
000004563 04107 $$aeng
000004563 046__ $$k2012-05-23
000004563 100__ $$aMishra, Sudib Kumar
000004563 24500 $$aReliability based Optimization of base Isolated Building Under Stochastic Earthquake Load Considering Random System Parameters

000004563 24630 $$n5.$$pProceedings of the 5th Asian-Pacific Symposium on Structural Reliability and its Applications
000004563 260__ $$bResearch Publishing, No:83 Genting Lane, #08-01, Genting Building, 349568 SINGAPORE
000004563 506__ $$arestricted
000004563 520__ $$2eng$$aBase isolation (BI) has long been established as an effective tool for improving seismic performance of structures. Studies on the performance of BI system under stochastic earthquake load are notable. However, most of the studies consider system parameters as deterministic and the optimal isolator characteristics are obtained accordingly. A major limitation of the deterministic approach is that the uncertainties in the performance-related decision variables cannot be included in the parameters optimization process. The present study deals with the reliability based design of BI system under seismic excitation considering the effect of system parameter uncertainty. With the aid of matrix perturbation theory, using first order Taylor series expansion, the total probability concept is used to evaluate the unconditional response of the structures under parameter uncertainty. For this, the conditional second order information of response quantities are obtained in random vibration framework using state space formulation. Subsequently, the unconditional failure probability of the primary structure is used as the objective function in order to determine the optimum BI system. The proposed design approach, thus, is tolerant to the uncertainty and provides estimate of the enhanced risk unforeseen in the deterministic system. A lead rubber bearing isolator (LRB) isolating a multi-storeyed building frame is considered for numerical study to elucidate the effect of parameter uncertainty on the optimum performance of BI system.

000004563 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004563 653__ $$aBase isolation, Reliability, Stochastic, Earthquakes, Optimization.

000004563 7112_ $$a5th Asian-Pacific Symposium on Structural Reliability and its Applications$$cSingapore (SG)$$d2012-05-23 / 2012-05-25$$gAPSSRA2012
000004563 720__ $$aMishra, Sudib Kumar$$iCharaborty, Subrata
000004563 8560_ $$ffischerc@itam.cas.cz
000004563 8564_ $$s243035$$uhttps://invenio.itam.cas.cz/record/4563/files/P309.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004563 962__ $$r4180
000004563 980__ $$aPAPER