Cyclic Testing of Existing and Retrofitted Riveted Stiffened Seat Angle Connections

Sarraf, Majid; Bruneau, Michel

doi:10.1061/(asce)0733-9445(1996)122:7(762)

Cited by 11 publications

(3 citation statements)

References 6 publications

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“…Also, using Eqs. (8), (10) and (12) gives the connection plastic moment and yield moment. The connection nonlinear stiffness is due to the catenary action of the top angle, its large deformation and stress stiffening of the angle material.…”

Section: Determining the α And β Parametersmentioning

confidence: 99%

“…Also the ductility and favorable seismic performance of semi-rigid frames with bolted connections with respect to the corresponding welded frames have been studied [1][2][3][4][5][6][7][8][9]. Riveted connections of an old steel structure are tested and analytical equations are proposed by Sarraf and Bruneau [10] to estimate the moment capacity of its connections together with two retrofit methods for seismic upgrading of the structure.…”

Section: Introductionmentioning

confidence: 99%

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Moment–rotation behavior of bolted top–seat angle connections

Pirmoz¹,

Khoei

Mohammadrezapour

et al. 2009

Journal of Constructional Steel Research

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Section: Determining the α And β Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Moment–rotation behavior of bolted top–seat angle connections

Pirmoz¹,

Khoei

Mohammadrezapour

et al. 2009

Journal of Constructional Steel Research

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“…This system relies on MRFs and stocky knee braces as a means to resist seismic forces. Knee braces were used in the past for wind-resistant design and have been recently explored in various forms for seismic applications (Aristizabal-Ochoa, 1986;Balendra, Yu, & Lee, 2001;Inoue et al, 2006;Kim & Seo, 2003;Sarraf & Bruneau, 1996). For this system, the frames are designed so that the knee braces will yield and fail under seismic loads.…”

Section: Introductionmentioning

confidence: 99%

Ductility reduction factor and collapse mechanism evaluation of a new steel knee braced frame

Asghari

Gandomi

2015

Structure and Infrastructure Engineering

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In this study, the suitability of a new structural system called the knee braced frames (KBFs) is investigated for seismic resistant steel structures. In these structural systems, ends of beams are connected to columns by hinges (simple connection) instead of rigid connections, and ends of knee braced elements are connected to columns and beams by hinges as well. In the present paper, in addition to a comparison between elastic behaviour and elastic fundamental natural period, the ductility reduction factor and the type of collapse mechanism in steel KBFs and steel moment resisting frames (MRFs) are compared. The study revealed that the stiffness of steel buildings can be increased considerably by applying knee braced elements and the effects of knee braced elements are highly dependent on knee braced configuration. By applying the pushover analysis, it was observed that the type of collapse mechanism of KBFs is very similar to the mechanism of MRFs. Furthermore in most cases, the ductility reduction factor, R m , obtained from steel KBFs is greater than the ductility reduction factor obtained for steel MRFs. Based on the similarity between type of collapse mechanism and the proximity of ductility reduction coefficients of the KBFs and MRFs systems, it can be concluded that the new steel knee braced frame systems can be categorised as steel MRFs with rigid connections.

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