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Finite element models and cyclic behaviour of self-centering post-tensioned connections with web hourglass pins

Finite element models and cyclic behaviour of self-centering post-tensioned connections with web hourglass pins
Finite element models and cyclic behaviour of self-centering post-tensioned connections with web hourglass pins
A new self-centering steel post-tensioned connection has been proposed by the authors. The connection uses high-strength steel post-tensioned bars to provide self-centering behavior and steel energy dissipation elements that consist of cylindrical pins with hourglass shape to provide enhanced deformation capacity. Large-scale experimental tests showed that the connection has robust self-centering behavior by eliminating residual drifts and beam damage for drifts lower or equal to 6%. This paper presents finite element models which can be used to reliably assess the design and behavior of the connection. A simplified connection model was first developed using simple mechanics. This model can predict the connection stiffness and strength with reasonable accuracy, and enables the preliminary design of self-centering steel moment-resisting frames using the proposed connection. A detailed nonlinear finite element model was also developed. This model was calibrated against experimental results and found capable to trace the nonlinear cyclic behaviour of the connection and capture all possible local failure modes. The calibrated finite element model was used to conduct a series of simulations to study the effect of different parameters on the connection behaviour. The parameters studied include the adopted design procedure, beam reinforcing detailing, and the beam and column section sizes.
0141-0296
1-16
Vasdravellis, G.
14ff6f1a-7480-44bb-a346-c6af8353353c
Karavasilis, T.L.
15850eb0-6af4-4b6e-bab4-d5bde281b769
Uy, B.
2c1feab4-15b6-41fa-8b4d-3dc0bea6b444
Vasdravellis, G.
14ff6f1a-7480-44bb-a346-c6af8353353c
Karavasilis, T.L.
15850eb0-6af4-4b6e-bab4-d5bde281b769
Uy, B.
2c1feab4-15b6-41fa-8b4d-3dc0bea6b444

Vasdravellis, G., Karavasilis, T.L. and Uy, B. (2013) Finite element models and cyclic behaviour of self-centering post-tensioned connections with web hourglass pins. Engineering Structures, 52, 1-16. (doi:10.1016/j.engstruct.2013.02.005).

Record type: Article

Abstract

A new self-centering steel post-tensioned connection has been proposed by the authors. The connection uses high-strength steel post-tensioned bars to provide self-centering behavior and steel energy dissipation elements that consist of cylindrical pins with hourglass shape to provide enhanced deformation capacity. Large-scale experimental tests showed that the connection has robust self-centering behavior by eliminating residual drifts and beam damage for drifts lower or equal to 6%. This paper presents finite element models which can be used to reliably assess the design and behavior of the connection. A simplified connection model was first developed using simple mechanics. This model can predict the connection stiffness and strength with reasonable accuracy, and enables the preliminary design of self-centering steel moment-resisting frames using the proposed connection. A detailed nonlinear finite element model was also developed. This model was calibrated against experimental results and found capable to trace the nonlinear cyclic behaviour of the connection and capture all possible local failure modes. The calibrated finite element model was used to conduct a series of simulations to study the effect of different parameters on the connection behaviour. The parameters studied include the adopted design procedure, beam reinforcing detailing, and the beam and column section sizes.

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More information

Accepted/In Press date: 1 February 2013
e-pub ahead of print date: 15 March 2013
Published date: July 2013
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 401613
URI: https://eprints.soton.ac.uk/id/eprint/401613
ISSN: 0141-0296
PURE UUID: f244b03f-199b-4d8d-8910-93b14a31288c
ORCID for T.L. Karavasilis: ORCID iD orcid.org/0000-0003-2553-5389

Catalogue record

Date deposited: 19 Oct 2016 15:49
Last modified: 15 Jul 2019 20:00

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