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Shake-Table Response of a Coupled RC Wall with Thin T-Shaped Piers
| 题名： | Shake-Table Response of a Coupled RC Wall with Thin T-Shaped Piers |
| 正文语种： | 英文 |
| 作者： | Matej Fischinger, Ph.D.; Peter Kante, Ph.D.;Tatjana Isakovic, Ph.D. |
| 作者单位： | Univ, of Ljubljana |
| 关键词： | Walls; Shake table; Coupling beams; Confinement; Shear strength; Shear-flexural interaction; Macromodels; Bidirectional excitation; Seismic effects. |
| 摘要： | A shake-table test of a 1:3 scale model of a thin, lightly reinforced concrete (RC), 5-story coupled wall, representing a typical apartment building with a high wall-to-floor area ratio, was performed. The wall consisted of two T-shaped piers, faced to each other by the webs, which were connected at each story level by the coupling beam and slab. The wall was subjected to a series of uniaxial and biaxial seismic excitations. Two different structural details providing different degrees of confinement were used at the free edges without boundary columns. The lightly confined free edges of the flanges (using hairpin transverse reinforcement) behaved satisfactorily in the case of moderate seismic demand. Due to the beam-slab interaction and the slab, which was considerably ticker than in typical buildings, the coupling beams were much stronger than expected, causing brittle shear failure of the overloaded wall piers under bidirectional excitation. The analyzed wall developed substantial strength and low ductility. The main observations of the experiment were confirmed by the results of postexperimental analytical studies performed using a three-dimensional (3D) multiple vertical-line element model, which has been incorporated into a well-known open-code program system. DOI: 10.106l/(ASCE)ST.1943-541X.000171& © 2017 American Society of Civil Engineers. |
| 出版日期： | 2017.05 |
| 出版年： | 2017 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.143 |
| 期： | NO.05 |
| 页码： | 04017004 |
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