Time-variant random interval response of concrete-filled steel tubular composite curved structures
- Publisher:
- Elsevier BV
- Publication Type:
- Journal Article
- Citation:
- Composites Part B: Engineering, 2016, 94, pp. 122-138
- Issue Date:
- 2016-06-01
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1-s2.0-S1359836816300531-main.pdf | Published version | 2.62 MB |
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Comprehensive investigation into uncertain time-dependent structural responses of concrete-filled steel tubular composite curved structures is presented. Diverse uncertainties including variational material properties, inevitable viscoelastic effects, as well as random environmental influences are addressed simultaneously. A new hybrid probabilistic and interval computational method is proposed for robustly assessing both time-dependent serviceability and strength limit of concrete-filled steel tubular arch structures involving both random and interval variables. The proposed approach offers a unified analysis framework, which adequately delivers the time-dependent bounds of statistical characteristics (i.e., lower and upper bounds of means and standard deviations) of structural behaviours. In this non-simulative computational scheme, general formulations on the time-dependent bounds of means and standard deviations are explicitly derived. Applicability, accuracy and efficiency of the proposed method are revealed by practically motivated examples. In addition, time-dependent hybrid probabilistic interval features of structural responses of concrete-filled steel tubular composite arch structures are systematically studied.
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