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Experimental study on a dry-assembled precast concrete frame with buckling-restrained braces
Highlights Proposing a dry-assembled precast concrete frame with buckling-restrained braces (BRB-DPCF). BRB-DPCF shows a comparable lateral-resistance capacity to a monolithic concrete frame with BRBs (BRB-MCF). BRB-DPCF features a greater repairable ability than BRB-MCF after cyclic loading.
Abstract This paper proposes a new dry-assembled precast concrete frame with buckling-restrained braces (BRB-DPCF) to reach the full potential of building industrialization and promote the popularization of precast structures in earthquake-prone zones. A new mechanical coupler and an unbonded posttensioning (PT) technology were adopted for the column-to-column joint and beam-to-column joint, respectively, of the BRB-DPCF. In this paper, the authors designed and tested a monolithic concrete frame with buckling-restrained braces (BRB-MCF) and a BRB-DPCF to investigate the seismic performance of the BRB-DPCF. The two specimens were two-story, single-bay concrete frames with a story height of 1750 mm and a bay of 2500 mm. The test results demonstrated that the BRB-DPCF exhibited stable and fat hysteretic loops and a lateral-resistance capacity comparable to the BRB-MCF. The BRB-DPCF showed a greater initial stiffness and smaller energy dissipation capacity than the BRB-MCF. The column damage of the BRB-DPCF was similar to that of the BRB-MCF, while the girder damage of the BRB-DPCF was negligible compared with that of the BRB-MCF. The BRB-DPCF featured a greater repairable ability after earthquake events than the BRB-MCF.
Experimental study on a dry-assembled precast concrete frame with buckling-restrained braces
Highlights Proposing a dry-assembled precast concrete frame with buckling-restrained braces (BRB-DPCF). BRB-DPCF shows a comparable lateral-resistance capacity to a monolithic concrete frame with BRBs (BRB-MCF). BRB-DPCF features a greater repairable ability than BRB-MCF after cyclic loading.
Abstract This paper proposes a new dry-assembled precast concrete frame with buckling-restrained braces (BRB-DPCF) to reach the full potential of building industrialization and promote the popularization of precast structures in earthquake-prone zones. A new mechanical coupler and an unbonded posttensioning (PT) technology were adopted for the column-to-column joint and beam-to-column joint, respectively, of the BRB-DPCF. In this paper, the authors designed and tested a monolithic concrete frame with buckling-restrained braces (BRB-MCF) and a BRB-DPCF to investigate the seismic performance of the BRB-DPCF. The two specimens were two-story, single-bay concrete frames with a story height of 1750 mm and a bay of 2500 mm. The test results demonstrated that the BRB-DPCF exhibited stable and fat hysteretic loops and a lateral-resistance capacity comparable to the BRB-MCF. The BRB-DPCF showed a greater initial stiffness and smaller energy dissipation capacity than the BRB-MCF. The column damage of the BRB-DPCF was similar to that of the BRB-MCF, while the girder damage of the BRB-DPCF was negligible compared with that of the BRB-MCF. The BRB-DPCF featured a greater repairable ability after earthquake events than the BRB-MCF.
Experimental study on a dry-assembled precast concrete frame with buckling-restrained braces
Qing, Yuan (author) / Li, Xiuhang (author) / Wang, Chun-Lin (author) / Zeng, Bin (author) / Meng, Shaoping (author)
Engineering Structures ; 276
2022-11-23
Article (Journal)
Electronic Resource
English
Seismic Performance of Precast Concrete Frames with Buckling-Restrained Braces
| Taylor & Francis Verlag | 2023
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