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INNOVATIVE ENERGY-DISSIPATION SYSTEM FOR SELF-CENTERING POSTTENSIONED STEEL MOMENT-RESISTING FRAMES

Article

Last updated: 13 Dec 2022

Subjects

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Tags

Resilience
Self-centering
Post-tensioning
Steel tube
Seismic
FEM
INNOVATIVE ENERGY-DISSIPATION SYSTEM FOR SELF-CENTERING POSTTENSIONED STEEL MOMENT-RESISTING FRAMES
2nd International Conference on Civil Engineering: Recent Applications and Future Challenges
Structural and Construction Engineering

Abstract

In existing research, the correlation between the resilience performance of the self-centering post-tensioned (SCPT) steel beam-column connections and the inelastic response of the required energy dissipation (ED) system was not addressed. For this purpose, a compact circular hollow steel tube (CHST) is proposed as a replaceable ED system. In the light of existing experimental results, a detailed three-dimensional finite element modeling (3D-FEM) was carried out to identify the response of the compact CHST under half cyclic loading. A lot of numerical work is concluded with the extraction of design charts to determine the axial strain (ΔL/L) of the ED system prior to encountering post-yield buckling. Therefore, in the numerically validated reference SCPT connection, several ED systems predesigned according to the design charts emphasized the capability of design charts to predict and control the resilient response of the connections. The optimum selection of proper inherent depth to thickness (D/t) ratio and length to depth (L/D) ratio of the CHST-ED system can increase the resilience of modern self-centering steel structures.

Categories

Structural and Construction Engineering

Keywords

Resilience, Self-centering, Post-tensioning, Steel tube, Seismic, FEM

Authors

First Name

Redhwan

Last Name

Algobahi

Affiliation

Civil Eng. Dept., Faculty of Eng., Assiut Univ., Assiut, Egypt

Email

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City

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Orcid

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First Name

Mohamed

Last Name

Fahmy

Affiliation

International Institute for Urban Systems Engineering, Southeast Univ., Nanjing 210096, China; and Civil Eng. Dept., Faculty of Eng., Assiut Univ., Assiut, Egypt

Email

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City

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Orcid

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First Name

Mohamed

Last Name

Abdo

Affiliation

Civil Engineering Department, Assiut University, Assiut, Egypt

Email

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City

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Orcid

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Volume

ICCE2021 Vol. 2

Issue Date

1 Jan 2021

Publish Date

9 Nov 2021

Page Start

559

Page End

567

Link

https://icce2021.conferences.ekb.eg/article_1193.html

Order

2

Publication Type

Conference

Publication Title

2nd International Conference on Civil Engineering: Recent Applications and Future Challenges

Publication Link

https://icce2021.conferences.ekb.eg/

Details

Type

Article

Locale

en

Created At

13 Dec 2022