Interval elastoplastic analysis of structures

Yang, Cheng; Tangaramvong, Sawekchai; Gao, Wei; Tin‐Loi, F.

doi:10.1016/j.compstruc.2014.12.004

Cited by 12 publications

(1 citation statement)

References 30 publications

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“…The interval evaluation methods of structural performances based on a probabilistic or nonprobabilistic approach have been studied extensively (Ben-Haim and Elishakoff, 1990;Ben-Haim et al, 1996;Qiu and Wang, 2003;Elishakoff and Ohsaki, 2010;Fujita and Takewaki, 2011;Roy et al, 2012;Guo and Li, 2013;Han et al, 2014;Yang et al, 2015Yang et al, , 2017. Furthermore, the robustness evaluation methods have been proposed as advanced methods for evaluating the toughness of structures under various uncertain circumstances.…”

Section: Introductionmentioning

confidence: 99%

Robustness Evaluation of Elastoplastic Base-Isolated High-Rise Buildings Subjected to Critical Double Impulse

Fujita

Yasuda

Kanno

et al. 2017

Front. Built Environ.

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A new method of robustness evaluation is proposed for an elastoplastic base-isolated high-rise building considering simultaneous uncertainties of structural parameters. Since it is difficult to evaluate the robustness of elastoplastic structures due to heavy computational load on the time-history response analysis including elastoplastic response, a double impulse input is used to provide a closed-form solution of the critical response of a single-degree-of-freedom (SDOF) elastic-perfectly plastic structure under a nearfield ground motion. Introducing an equivalent elastoplastic SDOF model of a baseisolated high-rise building, the worst combination of uncertain structural parameters, i.e., the stiffness and yield deformation at the base-isolation story and the stiffness of the superstructure, can be derived which leads to the upper bound of the critical elastoplastic response. It is shown that, by using the derived upper bound of the critical response, the robustness function, a measure of the robustness, of elastoplastic structures can be evaluated efficiently. In numerical examples, the robustness of a 30-story base-isolated high-rise building is compared with those of other models with different yield deformations at the base-isolation story to find a preferable design with larger robustness.

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