Determining elastic lateral stiffness of steel moment frame equipped with elliptic brace

Jouneghani, HG; Fanaie, N; Kalaleh, MT; Mortazavi, M

Determining elastic lateral stiffness of steel moment frame equipped with elliptic brace

Jouneghani, HG Fanaie, N Kalaleh, MT Mortazavi, M

Permalink

Publisher:: TECHNO-PRESS
Publication Type:: Journal Article
Citation:: Steel and Composite Structures, 2023, 46, (3), pp. 293-318
Issue Date:: 2023-02-10

Closed Access

	Filename	Description	Size
	22599435_14102895960005671.pdf	Published version	3.87 MB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Jouneghani, HG
dc.contributor.author	Fanaie, N
dc.contributor.author	Kalaleh, MT
dc.contributor.author	Mortazavi, M https://orcid.org/0000-0001-5123-7903
dc.date.accessioned	2024-05-21T02:18:08Z
dc.date.available	2024-05-21T02:18:08Z
dc.date.issued	2023-02-10
dc.identifier.citation	Steel and Composite Structures, 2023, 46, (3), pp. 293-318
dc.identifier.issn	1229-9367
dc.identifier.issn	1598-6233
dc.identifier.uri	http://hdl.handle.net/10453/179068
dc.description.abstract	This study aims to examine the elastic stiffness properties of Elliptic-Braced Moment Resisting Frame (EBMRF) subjected to lateral loads. Installing the elliptic brace in the middle span of the frames in the facade of a building, as a new lateral bracing system not only it can improve the structural behavior, but it provides sufficient space to consider opening it needed. In this regard, for the first time, an accurate theoretical formulation has been developed in order that the elastic stiffness is investigated in a two-dimensional single-story single-span EBMRF. The concept of strain energy and Castigliano’s theorem were employed to perform the analysis. All influential factors were considered, including axial and shearing loads in addition to the bending moment in the elliptic brace. At the end of the analysis, the elastic lateral stiffness could be calculated using an improved relation through strain energy method based on geometric properties of the employed sections as well as specifications of the utilized materials. For the ease of finite element (FE) modeling and its use in linear design, an equivalent element was developed for the elliptic brace. The proposed relation was verified by different examples using OpenSees software. It was found that there is a negligible difference between elastic stiffness values derived by the developed equations and those of numerical analysis using FE method.
dc.language	English
dc.publisher	TECHNO-PRESS
dc.relation.ispartof	Steel and Composite Structures
dc.relation.isbasedon	10.12989/scs.2023.46.3.293
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering
dc.subject.classification	Civil Engineering
dc.subject.classification	4005 Civil engineering
dc.subject.classification	4016 Materials engineering
dc.subject.classification	4017 Mechanical engineering
dc.title	Determining elastic lateral stiffness of steel moment frame equipped with elliptic brace
dc.type	Journal Article
utslib.citation.volume	46
utslib.for	0905 Civil Engineering
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2024-05-21T02:18:02Z
pubs.issue	3
pubs.publication-status	Published
pubs.volume	46
utslib.citation.issue	3

Abstract:

This study aims to examine the elastic stiffness properties of Elliptic-Braced Moment Resisting Frame (EBMRF) subjected to lateral loads. Installing the elliptic brace in the middle span of the frames in the facade of a building, as a new lateral bracing system not only it can improve the structural behavior, but it provides sufficient space to consider opening it needed. In this regard, for the first time, an accurate theoretical formulation has been developed in order that the elastic stiffness is investigated in a two-dimensional single-story single-span EBMRF. The concept of strain energy and Castigliano’s theorem were employed to perform the analysis. All influential factors were considered, including axial and shearing loads in addition to the bending moment in the elliptic brace. At the end of the analysis, the elastic lateral stiffness could be calculated using an improved relation through strain energy method based on geometric properties of the employed sections as well as specifications of the utilized materials. For the ease of finite element (FE) modeling and its use in linear design, an equivalent element was developed for the elliptic brace. The proposed relation was verified by different examples using OpenSees software. It was found that there is a negligible difference between elastic stiffness values derived by the developed equations and those of numerical analysis using FE method.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/179068