Experimental study on the seismic behavior of steel reinforced concrete columns
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摘要: 通過對8根剪跨比為3,十字型鋼混凝土柱進行了低周反復荷載實驗,研究型鋼混凝土柱的抗震性能.主要分析了實驗構件的破壞形態、滯回曲線、骨架曲線、延性系數和耗能能力,并探討了體積配箍率對型鋼混凝土柱抗震性能的影響,通過實驗數據的擬合給出了型鋼混凝土柱的延性與體積配箍率的關系式.實驗結果證實十字型鋼混凝土柱構件具有良好的抗震性能,而且體積配箍率是影響型鋼混凝土柱構件延性的一個重要因素,對構件的抗震性能的改善具有非常明顯作用.Abstract: In order to study the seismic behavior of steel reinforced concrete (SRC) columns, eight cross-shaped SRC columns with a span ratio of 3 were tested under low cyclic reversed loading. The influence of volume-stirrup ratio on the seismic behavior of SRC columns was discussed by analyzing the failure patterns, hysteresis loops, skeleton curves, ductility coefficients and energy dissipation capacities of such members. A formula between ductility and volume-stirrup ratio of SRC columns was put forward by fitting the experimental data. The test results confirm that the seismic behavior of cross-shaped SRC columns is good. The volume-stirrup ratio is an important influencing factor on ductility of the members, in favor of improving the seismic behavior of members significantly.
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Key words:
- steel reinforced concrete /
- concrete columns /
- seismic behavior /
- ductility
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