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Data driven evaluation of existing numerical modelling guidelines for semi-rigid connections

Data driven evaluation of existing numerical modelling guidelines for semi-rigid connections
Data driven evaluation of existing numerical modelling guidelines for semi-rigid connections
The performance-based earthquake engineering framework requires robust numerical models to accurately quantify structural performance under different hazards, beyond the scope of conventional building codes. Predicting the nonlinear behaviour of semi-rigid (SR) steel connections can be challenging given the multitude of deforming components and failure modes. The literature comprises a number of analytical and empirical models attempting to characterize their moment-rotation behaviour. These models are generally limited in terms of applicability. This paper focuses on flush end-plate (FEP) connections that are abundantly used in construction worldwide. A comprehensive experimental data pool of 374 specimens is assembled, digitalized and processed. This data pool is used to quantify the response parameters of FEP connections, including the elastic stiffness, moment capacity and rotational ductility. The data shows that bare steel FEP connections can develop an average strength of 30% that of the beam and a considerable plastic rotation of 4% radians. The robustness of the Eurocode 3 component method, in predicting the connection’s strength and stiffness, is also assessed. The analysis highlights the loss of accuracy for the component method particularly with respect to the elastic stiffness.
Semi-rigid connections, Numerical modelling, Flush end-plate, Experimental database
244-251
Springer, Cham
Elkady, Ahmed
8e55de89-dff4-4f84-90ed-6af476e328a8
Mak, Lam
b208df6c-2115-4cef-96a2-debea382d9c7
Elkady, Ahmed
8e55de89-dff4-4f84-90ed-6af476e328a8
Mak, Lam
b208df6c-2115-4cef-96a2-debea382d9c7

Elkady, Ahmed and Mak, Lam (2022) Data driven evaluation of existing numerical modelling guidelines for semi-rigid connections. In 10th International Conference on Behaviour of Steel Structures in Seismic Areas. STESSA 2022. vol. 262, Springer, Cham. pp. 244-251 .

Record type: Conference or Workshop Item (Paper)

Abstract

The performance-based earthquake engineering framework requires robust numerical models to accurately quantify structural performance under different hazards, beyond the scope of conventional building codes. Predicting the nonlinear behaviour of semi-rigid (SR) steel connections can be challenging given the multitude of deforming components and failure modes. The literature comprises a number of analytical and empirical models attempting to characterize their moment-rotation behaviour. These models are generally limited in terms of applicability. This paper focuses on flush end-plate (FEP) connections that are abundantly used in construction worldwide. A comprehensive experimental data pool of 374 specimens is assembled, digitalized and processed. This data pool is used to quantify the response parameters of FEP connections, including the elastic stiffness, moment capacity and rotational ductility. The data shows that bare steel FEP connections can develop an average strength of 30% that of the beam and a considerable plastic rotation of 4% radians. The robustness of the Eurocode 3 component method, in predicting the connection’s strength and stiffness, is also assessed. The analysis highlights the loss of accuracy for the component method particularly with respect to the elastic stiffness.

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Published date: 8 May 2022
Venue - Dates: 10th International Conference on Behaviour of Steel Structures in Seismic Areas. STESSA 2022, , Timisoara, Romania, 2022-05-25 - 2022-05-27
Keywords: Semi-rigid connections, Numerical modelling, Flush end-plate, Experimental database

Identifiers

Local EPrints ID: 457389
URI: http://eprints.soton.ac.uk/id/eprint/457389
PURE UUID: 6fa06d55-a05f-4a69-9429-c67f9355b3d9
ORCID for Ahmed Elkady: ORCID iD orcid.org/0000-0002-1214-6379

Catalogue record

Date deposited: 06 Jun 2022 16:48
Last modified: 07 Jun 2022 01:58

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Contributors

Author: Ahmed Elkady ORCID iD
Author: Lam Mak

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