轴压比对钢管混凝土柱侧向冲击性能影响研究

THE INFLUENCE OF AXIAL COMPRESSION RATIO ON THE LATERAL IMPACT PERFORMANCE OF CONCRETE FILLED STEEL TUBE COLUMNS

  • 摘要: 为研究不同轴压比对钢管混凝土柱侧向冲击性能的影响,该文对已有的冲击试验进行了验证。在验证模型基础上建立了不同轴压比的钢管混凝土柱在侧向冲击作用下的动力有限元模型,计算得到连续变化轴压比下钢管混凝土的抗冲击性能参数。结果表明:轴压比对钢管混凝土的侧向抗冲击性能有显著影响。在轴压比小于0.7时,轴力对钢管混凝土构件侧向抗冲击能力有提高作用,当轴压比大于0.7时,轴力对钢管混凝土侧向抗冲击能力有削弱作用。

     

    Abstract: To study the influence of different axial compression ratios on the lateral impact performance of concrete-filled steel tube columns, the existing impact tests were verified in this paper. Based on the verification model, the dynamic finite element models of concrete-filled steel tubular columns with different axial compression ratios under lateral impact were established. The impact resistance parameters of the concrete-filled steel tubular columns with different axial compression ratios were calculated. The results show that the axial compression ratio has a significant effect on the lateral impact resistance of concrete-filled steel tubes. When the axial compression ratio is less than 0.7, the axial force increases the lateral impact resistance of concrete-filled steel tubular members; when the axial compression ratio is greater than 0.7, the axial force decreases the lateral impact resistance of concrete-filled steel tubular members.

     

/

返回文章
返回