原文传递
A novel reinforced-concrete buckling-restrained brace for precast concrete lateral-load-resisting frames
| 题名： | A novel reinforced-concrete buckling-restrained brace for precast concrete lateral-load-resisting frames |
| 正文语种： | eng |
| 作者： | Shane Oh;Yahya C. Kurama;Jon Mohle;Lily Polster;Mark Manning;Brad D. Weldon |
| 作者单位： | Department of Civil and Environmental Engineering and Earth Sciences at the University of Notre Dame in Notre Dame Ind.;Department of Civil and Environmental Engineering and Earth Sciences at the University of Notre Dame;Clark Pacific in Sacramento Calif;Department of Civil and Environmental Engineering and Earth Sciences at the University of Notre Dame;Department of Civil and Environmental Engineering and Earth Sciences at the University of Notre Dame;Department of Civil and Environmental Engineering and Earth Sciences at the University of Notre Dame |
| 关键词： | Buckling-restrained braced frame; FEA; nonlinear finite element analysis; precast concrete frame lateral system; reinforced-concrete buckling-restrained brace; seismic design; seismic failure |
| 摘要： | This paper describes a numerical investigation on the seismic design and behavior of a novel reinforced-con-crete buckling-restrained brace component for use in precast concrete lateral-load-resisting frames. The design procedure aimed to develop a brace with ductile behavior under reversed cyclic loading. Nonlinear finite element analyses were conducted to investigate the following potential undesirable failure modes of the brace: global buckling of the brace, closure of the end gaps, and local translational buckling of the energy-dissipation bars. The results indicated that failure through global buckling is unlikely for practical brace designs. Closure of the end gaps can be prevented by designing a wide-enough gap at each end of the brace, but design must also ensure that local buckling of the energy-dissipation bars does not occur over their unsupported length across the end gaps. An axially decoupled steel shear dowel can be used to permit a wider end gap without triggering translational buckling of the energy-dissipation bars. Braces that are designed to prevent undesirable failure modes can provide stable behavior up to ductile low-cycle fatigue fracture of the energy-dissipation bars. |
| 出版年： | 2023 |
| 期刊名称： | PCI Journal |
| 卷： | 68 |
| 期： | 3 |
| 页码： | 95-116 |
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