Seismic behavior of steel reinforced concrete cross-shaped columns
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    Abstract:

    To investigate the seismic behavior of steel reinforced concrete cross-shaped columns, five specimens with different axial compression ratio and form of steel layout were tested under low cyclic loading. Hysteretic curves, skeleton curves, ductility performance, rigidity degeneration, and energy dissipation capacity were analyzed. The effects of axial compression ratio and form of steel layout to specimens were compared and analyzed. The results showed that with axial compression ratio increasing, the bearing capacity of specimens became higher, but the ductility and energy dissipation capacity turn to be lower, and the rate of rigidity degeneration trended to be quicker. Compared with ordinary reinforced concrete cross-shaped columns, the hysteretic behavior of concrete cross-shaped columns reinforced when shape steel was improved, the rigidity, ductility performance, bearing capacity and energy dissipation capacity were enhanced, the degree of failure were alleviated. Therefore, the seismic behavior of steel reinforced concrete cross-shaped columns was improved significantly. The seismic behavior of specimens of T-shaped steel combined with square steel tube was superior to solid-web steel reinforced concrete cross-shaped column except rigidity degeneration.

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李艳艳,张玮天.十字形截面钢混凝土组合异形柱的抗震性能[J].土木与环境工程学报(中英文),2017,39(6):54~60

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History
  • Received:February 05,2017
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  • Online: November 02,2017
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