A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Surrogate models for endplate beam-column connections with shape memory alloy bolts
Abstract This paper presents the development and validation of moment-rotation backbone curve parameters for self-centering steel endplate connections with superelastic SMA bolts. In terms of influential design factors, surrogate models of response parameters are proposed using detailed finite element models of self-centering beam-column connections and statistical analysis of response parameters. The predictive surrogate models are useful for characterizing the connection backbone and self-centering response, which is essential for the performance-based design and assessment of extended endplate connections equipped with SMA bolts. Through a verification study, the accuracy of predictions using the proposed models is confirmed. The proposed surrogate models are used to assess the fragility of SMA-based beam-column connections. The results demonstrate that endplate beam-column connections with SMA bolts can provide an acceptable level of deformation capacity. Furthermore, it is found that larger diameter SMA bolts and smaller depth beam sections can reduce the probability of experiencing SMA bolt fracture by 31% and 77%, respectively.
Graphical abstract Display Omitted
Highlights Surrogate models developed for connections with shape memory alloy (SMA) bolts. Self-centering response of endplate moment connections with SMA is characterized. Accuracy of the proposed predictive equations are verified. Fragility of endplate beam-column connections with SMA bolts is evaluated. The SMA connections can provide an acceptable level of deformation capacity.
Surrogate models for endplate beam-column connections with shape memory alloy bolts
Abstract This paper presents the development and validation of moment-rotation backbone curve parameters for self-centering steel endplate connections with superelastic SMA bolts. In terms of influential design factors, surrogate models of response parameters are proposed using detailed finite element models of self-centering beam-column connections and statistical analysis of response parameters. The predictive surrogate models are useful for characterizing the connection backbone and self-centering response, which is essential for the performance-based design and assessment of extended endplate connections equipped with SMA bolts. Through a verification study, the accuracy of predictions using the proposed models is confirmed. The proposed surrogate models are used to assess the fragility of SMA-based beam-column connections. The results demonstrate that endplate beam-column connections with SMA bolts can provide an acceptable level of deformation capacity. Furthermore, it is found that larger diameter SMA bolts and smaller depth beam sections can reduce the probability of experiencing SMA bolt fracture by 31% and 77%, respectively.
Graphical abstract Display Omitted
Highlights Surrogate models developed for connections with shape memory alloy (SMA) bolts. Self-centering response of endplate moment connections with SMA is characterized. Accuracy of the proposed predictive equations are verified. Fragility of endplate beam-column connections with SMA bolts is evaluated. The SMA connections can provide an acceptable level of deformation capacity.
Surrogate models for endplate beam-column connections with shape memory alloy bolts
Mohammadi Nia, Majid (author) / Moradi, Saber (author)
2021-08-22
Article (Journal)
Electronic Resource
English
| British Library Conference Proceedings | 2018
Comparative tests on endplate beam-to-column connections
| Elsevier | 1993
Comparative Tests on Endplate Beam-to-Column Connections
| Online Contents | 1994
Analytical Investigation of Beam-to-Column Endplate Connections at Elevated Temperatures
| Online Contents | 2018