Publicado 6 números por año
ISSN Imprimir: 2152-5080
ISSN En Línea: 2152-5099
Indexed in
ROBUST STOCHASTIC DESIGN OF BASE-ISOLATED STRUCTURAL SYSTEMS
SINOPSIS
The development of a general framework for robust reliability-based design of base-isolated structural systems under uncertain conditions is presented. The uncertainties about the structural parameters as well as the variability of future excitations are characterized in a probabilistic manner. Isolation elements composed of nonlinear lead rubber bearings are used to model the isolation system. The optimal design problem is formulated as a nonlinear constrained minimization problem involving multiple design requirements, including reliability constraints related to the structural performance. Failure events defined by a large number of random variables are used to characterize the reliability of the system. A sequential optimization approach based on global conservative, convex, and separable approximations is implemented for solving the optimization problem. An example problem that considers a 10-story building under stochastic ground excitation illustrates the beneficial effects of base-isolation systems in reducing the superstructure response.
-
JACOB C., SEPAHVAND K., MATSAGAR V. A., MARBURG S., STOCHASTIC SEISMIC RESPONSE OF BASE-ISOLATED BUILDINGS, International Journal of Applied Mechanics, 05, 01, 2013. Crossref
-
Jensen H.A., Kusanovic D.S., On the effect of near-field excitations on the reliability-based performance and design of base-isolated structures, Probabilistic Engineering Mechanics, 36, 2014. Crossref
-
Jensen Hector, Papadimitriou Costas, Reliability Analysis of Dynamical Systems, in Sub-structure Coupling for Dynamic Analysis, 89, 2019. Crossref
-
Jensen H.A., Mayorga F., Valdebenito M.A., On the reliability of structures equipped with a class of friction-based devices under stochastic excitation, Computer Methods in Applied Mechanics and Engineering, 364, 2020. Crossref
-
Jerez D.J., Jensen H.A., Beer M., Reliability-based design optimization of structural systems under stochastic excitation: An overview, Mechanical Systems and Signal Processing, 166, 2022. Crossref