Steel beam-to-column connections equipped with SMA tendons and energy dissipating devices including shear tabs or web hourglass pins

Farmani, Mohammad Amin; Ghassemieh, Mehdi

doi:10.1016/j.jcsr.2017.04.003

Cited by 37 publications

(14 citation statements)

References 25 publications

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“…Stiffeners help in distributing the forces in the III. PREVIOUS RESEARCH Considerable research has been carried out to improve the beam column connections in resisting the applied loads and deflections [2][3][4][5][6][7][8][9][10][11][12][13][14]. A different method of a steel yielding damper in the beam-to-column connections relying on the combination of slit damper and T-stud is proposed in [2] as shown in Figure 4, with an aim to increase energy dissipation capacity and stiffness and to reduce lateral damage on the structure.…”

Section: Beam-to-column Connectionsmentioning

confidence: 99%

“…It is expected that plastic deformation to be concentrated on connectors, while the main structural components remain elastic. Authors in [4] presented beam to column connections equipped with super elastic shape memory alloy tendons as recentering elements and shear tabs or web hourglass steel pins as supplementary energy dissipating and shear resisting components (Figure 6). Connecting the beam web to the column flange, shear tabs can help transfer shear force from the beam to the column.…”

Section: Beam-to-column Connectionsmentioning

confidence: 99%

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Improved Steel Beam-Column Connections in Industrial Structures

Bishay-Girges

2020

Eng. Technol. Appl. Sci. Res.

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Beam-to-column connection is a rigid connection used in steel moment frames which acts as the main resisting system in structural design. Haunches with double beam section height at the eave, ridge and crane bracket are usually used to resist the large bending moment at the critical locations of the steel frames. Damper devices can be used as the main source of producing forces used to reduce the bending moment due to different static and dynamic loads. This study focuses on improving the steel beam-column connection with the proposed control system in the eave connection which can also be used under the bracket which supports crane beam in industrial buildings. The purpose of this study is to describe the development of the beam-column steel connection incorporating dampers installed to beam bottom flange to reduce the effect of applied load on the frame without the need to create haunches to make the connection design more efficient.

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Section: Beam-to-column Connectionsmentioning

confidence: 99%

Section: Beam-to-column Connectionsmentioning

confidence: 99%

Improved Steel Beam-Column Connections in Industrial Structures

Bishay-Girges

2020

Eng. Technol. Appl. Sci. Res.

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“…Farmani and Ghassemieh showed that SMA materials could be used as bolts and tendons in steel connections. In their numerical studies, the rate of permanent deformations decreased after unloading and fell almost to zero [51,52].…”

Section: Introductionmentioning

confidence: 96%

Analytical and Numerical Investigation of Knee Brace Equipped with a Shape Memory Alloy Damper

Shakiba

Mortazavi

2022

Shock and Vibration

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Shape memory alloys (SMAs) are some of the new materials that have attracted the attention of many engineers due to their unique behavior. The most important advantage of these materials is their superelastic behavior, which allows the alloy to return to its original shape after a large deformation. In superelastic behavior, the shape memory alloy can also dissipate a significant amount of energy while returning to its original shape. In this research, the superelastic alloy made of nitinol has been used to improve the performance of knee dampers. For this purpose, a frame equipped with a knee damper was selected as the reference model and was modelled in Abaqus numerical software and validated with an experimental model. After ensuring the correct behavior of the numerical model, the SMA damper was installed perpendicular to the knee damper, between the knee damper and the beam to column connection. In this paper, two parameters of the SMA damper cross section area and SMA length were investigated. Based on the observed results, increasing the length of SMA increases the system resistance. As the cross section area of the SMA damper increases, the effect of the SMA length on the resistance of the system increases. On the other hand, increasing the cross section area of the SMA significantly increases the recentering of the system. Due to the significant recentering that the SMA damper creates in the structure, the amount of energy dissipation of the system is reduced compared to the reference model. The amount of dissipated energy depends on the length and cross section area of the SMA damper. Thus, the longer the SMA, the greater the energy dissipation, and the lower the SMA cross section area, the lower the system energy dissipation.

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“…Vasdravellis et al [12] proposed a new self-centering steel PT connection using high-strength steel PT bars to induce self-centering behavior and cylindrical pins with an hourglass shape to provide an enhanced deformation capacity. Steel structures constructed using shape memory alloys for achieving self-centering capabilities have been widely investigated [13][14][15][16][17]. Meanwhile, innovative structural configurations of self-centering steel braces in steel frames have been designed and corresponding tests have been conducted [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…Fig 15. Gap opening photographs of both steel frames in pull direction under EL-Centro seismic records Fig.16Gap opening photographs of both steel frames in pull direction under Wenchuan seismic records…”

mentioning

confidence: 98%

Experimental Study of Resilient Prefabricated Steel Frame With All-Bolted Beam-to-Column Connections

2020

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To avoid welding on a construction site, this paper proposes a novel resilient prefabricated steel frame with all-bolted beamto-column connections (ABRPSF), which is optimized based on a resilient prefabricated steel frame with mixed welded and bolted beam-to-column connections (WBRPSF) that was proposed and investigated in a previous study. Four-story, 3 × 5 bay prototype structures of the ABRPSF and WBRPSF are designed, and their substructures are used to conduct pseudodynamic tests, whose results are then compared to investigate the seismic behavior of ABRPSFs. The results indicate that the seismic behavior and recentering capacity of a new structural system composed of ABRPSFs are similar to those of WBRPSFs; in addition, the ABRPSF improves the assembly efficiency significantly and can be adopted as a reliable alternative to the WBRPSF.

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Steel beam-to-column connections equipped with SMA tendons and energy dissipating devices including shear tabs or web hourglass pins

Cited by 37 publications

References 25 publications

Improved Steel Beam-Column Connections in Industrial Structures

Improved Steel Beam-Column Connections in Industrial Structures

Analytical and Numerical Investigation of Knee Brace Equipped with a Shape Memory Alloy Damper

Experimental Study of Resilient Prefabricated Steel Frame With All-Bolted Beam-to-Column Connections

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