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Structural Engineering and Mechanics Volume 60, Number 2, October25 2016 , pages 251-269 DOI: https://doi.org/10.12989/sem.2016.60.2.251 |
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Experimental and numerical study on innovative seismic T-Resisting Frame (TRF) |
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Payam Ashtari, Helia Barzegar Sedigh and Farzaneh Hamedi
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| Abstract | ||
| In common structural systems, there are some limitations to provide adequate lateral stiffness, high ductility, and architectural openings simultaneously. Consequently, the concept of T-Resisting Frame (TRF) has been introduced to improve the performance of structures. In this study, Configuration of TRF is a Vertical I-shaped Plate Girder (V.P.G) which is placed in the middle of the span and connected to side columns by two Horizontal Plate Girders (H.P.Gs) at each story level. System performance is improved by utilizing rigid connections in link beams (H.P.Gs). Plastic deformation leads to tension field action in H.P.Gs and causes energy dissipation in TRF; therefore, V.P.G. High plastic deformation in web of TRF\'s members affects the ductility of system. Moreover, in order to prevent shear buckling in web of TRF\'s members and improve overall performance of the system, appropriate criteria for placement of web stiffeners are presented in this study. In addition, an experimental study is conducted by applying cyclic loading and using finite element models. As a result, hysteresis curves indicate adequate lateral stiffness, stable hysteretic behavior, and high ductility factor of 6.73. | ||
| Key Words | ||
| T-Resisting Frame; experimental study; finite element; link beams; shear yielding; ductility factor | ||
| Address | ||
| Payam Ashtari: Department of Civil Engineering, University of Zanjan, Zanjan, 45371-38791, Iran Helia Barzegar Sedigh: Department of Civil Engineering, Imam Khomeini International University, Qazvin, 34149-16818, Iran Farzaneh Hamedi: Department of Civil Engineering, Imam Khomeini International University, Qazvin, 34149-16818, Iran | ||