Multi-stage Performance Upgrade of Steel Moment Frames by Post-tension Connections

Gerami, Mohsen

doi:10.5829/ije.2021.34.05b.07

Cited by 2 publications

(2 citation statements)

References 21 publications

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“…Ultimately the suggested angles had a good thickness, dimension, and material. Gerami [10] has investigted the steel moment frames using novel post-tensioned connections. Hosseinnejad et al [11] investigated the use of smart materials (e.g., SMA) in post-tensioned connections.…”

Section: Introductionmentioning

confidence: 99%

A Parametric Study on Improved Reduced Beam Section Connections with Post-tensioning to Enhance Seismic Resilience

Khandan,

Sivandipour,

Noroozinejad Farsangi

2023

IJE

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This study presents novel research on the seismic behavior of self-centering reduced beam section (RBS) connections in steel structures. Unlike traditional moment steel frames that concentrate non-elastic deformations in energy dissipation devices, the innovative self-centering RBS connections utilize posttensioning techniques to restore the structure to its pre-earthquake condition. By significantly reducing residual deformations, these connections offer a promising alternative for improving seismic resilience. To validate the effectiveness of the post-tensioned (PT) and RBS connections, advanced nonlinear numerical modeling using the Finite Element Method (FEM) in ABAQUS software is employed. This approach allows for a comprehensive investigation, comparing the numerical results with laboratory data. Furthermore, the study goes beyond existing research by incorporating additional high-strength cables into the RBS connections. This novel configuration aims to assess the impact of post-tensioned cables on seismic behavior, adding a new dimension to the understanding of these connections. Through a rigorous parametric study, the research uncovers crucial insights into the seismic performance of the self-centering RBS connections. Notably, the study reveals the significant influence of the initial posttensioning force on various aspects, including stiffness, maximum moment capacity, and gap-opening behavior of PT connections. The findings demonstrate the potential of increasing the initial posttensioning force to enhance the energy dissipation capacity and overall performance of the PT connections. Overall, this study presents pioneering research that advances the understanding of selfcentering RBS connections and their potential application in steel structures. By emphasizing the novel aspects of the research, it contributes to the body of knowledge in the field and provides valuable insights for improving the seismic resilience of structures.

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Section: Introductionmentioning

confidence: 99%

A Parametric Study on Improved Reduced Beam Section Connections with Post-tensioning to Enhance Seismic Resilience

Khandan,

Sivandipour,

Noroozinejad Farsangi

2023

IJE

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“…Hosseinnejad et al [26] studied the load-bearing capacity of the post-tensioned tapered steel beams by shaped memory alloy (SMA) tendons. Heydari and Gerami [27] investigated the approach of moment frames with conventional welded connections using a reversible system. Pourzangbar et al [28] investigated the effect of different viscous damper configurations on the performance of steel frames.…”

Section: Introductionmentioning

confidence: 99%

Performance of Reinforced Concrete Shear Wall Equipped with an Innovative Hybrid Damper

Abedi

Jalali

Shafaei

2021

IJE

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The performance of simultaneous application of steel cantilever damper and Shape Memory Alloy (SMA) rods in the reinforced concrete (RC) shear wall was investigated. In this regard, the critical numerical validation of three full-scale experimental models were distinctly performed and the results were analyzed. Various aspects of numerical modelling, including material modelling assumptions, behavioural models, elements, and solution methods were compared with experimental results. Specimens considering SMA rods as well as steel cantilever damper were numerically investigated. The results illustrated that with increasing the SMA rod angle, the maximum force was decreased, and the residual displacement and dissipated energy was improved. Also, comparing the specimen results without the SMA rods and the specimen with the SMA rods showed that despite the positive effect of the SMA rods, which leads to an increase in maximum force and reduction of residual displacement, the dissipated energy was decreased.

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Multi-stage Performance Upgrade of Steel Moment Frames by Post-tension Connections

Cited by 2 publications

References 21 publications

A Parametric Study on Improved Reduced Beam Section Connections with Post-tensioning to Enhance Seismic Resilience

A Parametric Study on Improved Reduced Beam Section Connections with Post-tensioning to Enhance Seismic Resilience

Performance of Reinforced Concrete Shear Wall Equipped with an Innovative Hybrid Damper

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