Seismic performance of the Accordion-Web RBS connection

Mirghaderi, Seyed Rasoul; Torabian, Shahabeddin; Imanpour, Ali

doi:10.1016/j.jcsr.2009.09.007

Cited by 62 publications

(29 citation statements)

References 18 publications

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“…The connection proposed by Mirghaderi et al [20] was used in this section in order to compare the results. As explained in the literature, their connection was a kind of reduced section using accordion web created by double angles 50 50 4 placed in IPE180 (Figure 8) with the same subassembly with the proposed TW-RBS connection.…”

Section: Results Comparison Of Tw-rbs Versus Aw-rbsmentioning

confidence: 99%

“…Previous studies have also shown that there is no interaction between the exural behavior and shear behavior of beams with corrugated web [19]. Mirghaderi et al (2010) [20] discussed and evaluated bending beam connection of reduced cross-section by corrugated web in an experimental and analytical study. Two symmetric angles were considered in two test samples with respect to the web as corrugated sheet to execute removed web accommodation and create a cross-section as Accordion Web RBS (AW-RBS).…”

Section: Connection With Accordion Webmentioning

confidence: 99%

“…The proposed subassembly used in similar experimental studies investigated by Mirghaderi et al [20] was chosen to con rm bene cial behavior of the connection. It consists of interior connection with beams attached to the column opposite faces.…”

Section: Substructure and The Choice Of Dimensional Parametersmentioning

confidence: 99%

“…In order to have a better assessment of the proposed model results, numerical and experimental results at di erent story drifts on TW-RBS model were compared with the obtained experimental results of AW-RBS [20], as detailed in Table 6. According to the results, in TW-RBS, local buckling of compression ange in the reduced section has been created at 4% story drift, while in the AW-RBS connection, buckling is noticed outside of the reduced section between reduced section area and the column face.…”

Section: Evaluation Of Numerical Analysis Observations At DI Erent Stmentioning

confidence: 99%

“…AW-RBS test specimen's details by Mirghaderi et al [20]. The rst yeilding emerged at the center of the corrugated region during the rst cycle.…”

Section: Evaluation Of Strain In Numerical Analysismentioning

confidence: 99%

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Tubular Web RBS Connection to Improve Seismic Behavior of Moment Resisting Steel Frames

2017

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Abstract. A new type of Reduced Beam Section (RBS) connection, called \Tubular WebRBS (TW-RBS)", is proposed in this research. TW-RBS is made by replacing a part of web with a tube at the expected location of the beam plastic hinge. In addition to an analytical study, the proposed section is numerically studied under cyclic load using ABAQUS niteelement software, and a test specimen is used for the calibration of numerical results. The results show that using TW-RBS not only creates a ductile fuse far from the beamto-column connection components, but it also increases story drift capacity up to 9%. Furthermore, the tubular web, like corrugated sheet, can improve both the out-of-plane sti ness of the beam longitudinal axis and the ange stability condition due to the smaller width-to-thickness ratio of the beam ange in the plastic hinge region. Thus, the tubular web improves lateral-torsional buckling stability of beam. On the other hand, the tubular web provides a better condition than other accordion web with sharp corners in terms of low-cycle fatigue, because change of direction of strain in arc shape of the tubular web section is smaller than the accordion web with sharp corners.

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Section: Results Comparison Of Tw-rbs Versus Aw-rbsmentioning

confidence: 99%

Section: Connection With Accordion Webmentioning

confidence: 99%

Section: Substructure and The Choice Of Dimensional Parametersmentioning

confidence: 99%

Section: Evaluation Of Numerical Analysis Observations At DI Erent Stmentioning

confidence: 99%

“…AW-RBS test specimen's details by Mirghaderi et al [20]. The rst yeilding emerged at the center of the corrugated region during the rst cycle.…”

Section: Evaluation Of Strain In Numerical Analysismentioning

confidence: 99%

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Tubular Web RBS Connection to Improve Seismic Behavior of Moment Resisting Steel Frames

2017

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Seismic performance of the enlarged beam section connection

et al. 2023

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Enlarged beam section (EBS) connection is a new moment connection developed to eliminate the shortcomings of conventional reduced beam section connections and fulfill desired performance. In EBS, the width of the flanges increases in specific locations between the desired plastic hinge and the column face of the beam to let the plastic hinge occur in a favorable region. Hence, the plastic hinge location can be controlled by manipulation of EBS parameters. In this study, the seismic performance of EBS connections under cyclic loading in the standard frameworks is investigated using finite‐element modeling. Before implementation the finite‐element model is verified by an experimental study on conventional connection. Utilizing optimum EBS parameters in the finite‐element modeling, no significant damage is predicted in weld lines and their vicinity, the column, and the connection zone. Also, no remarkable deformation or buckling instability is detected in the results. This indicates appropriate performance of the connection and formation of the plastic hinge in the desirable region. The requirements of various regulatory standards are achieved in terms on number of cycles and the total rotation. In addition, due to the ease of implementation, this connection type can be an excellent alternative to other moment connection types.

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Seismic evaluation of reduced beam section frames considering connection flexibility

Ghassemieh

Kiani

2012

Structural Design Tall Build

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SUMMARY In the present article, the seismic performance of frames with reduced beam section (RBS) connections is evaluated. A key purpose of this study is the inclusion of connections flexibility in the seismic performance of RBS frames. Almost in every research projects carried out on seismic performance and design of RBS frames, the beam‐to‐column connection is typically assumed as fully rigid. The results of nonlinear finite element analysis performed on investigating the local performance of RBS connection reveal that they are within the American Institute of Steel Construction‐defined semirigid connections. Three building frames, including 4, 8 and 16 stories considering the semirigid connection as well as fully rigid connection, are considered. A numerical study of the overall seismic response of the building frames subjected to near as well as far field earthquake ground motions using nonlinear static and/or nonlinear dynamic analysis is presented. Results in terms of inter‐story drifts, total drifts, story shears and shear deformation in panel zone indicate that overlooking the flexibility of beam‐to‐column connections may lead to erroneous conclusions and unsafe seismic behavior that subsequently become significant in some cases. Copyright © 2012 John Wiley & Sons, Ltd.

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Seismic performance of the Accordion-Web RBS connection

Cited by 62 publications

References 18 publications

Tubular Web RBS Connection to Improve Seismic Behavior of Moment Resisting Steel Frames

Tubular Web RBS Connection to Improve Seismic Behavior of Moment Resisting Steel Frames

Seismic performance of the enlarged beam section connection

Seismic evaluation of reduced beam section frames considering connection flexibility

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