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对钢管超高强钢纤维混凝土柱在爆炸荷载作用下的动力响应进行了试验研究,试验测得了三个不同装药量的反射压力时程曲线,对比分析了空心及实心方形截面和圆形截面钢管超高强钢纤维混凝土柱的动力响应差异,讨论了不同折合距离的影响。试验结果表明:在相同内、外径(边长)条件下,方形截面钢管超高强钢纤维混凝土柱抗爆性能优于圆形截面的。若设计得当,空心方形截面钢管超高强钢纤维混凝土柱抗爆性能优于实心方形截面的。
The dynamic response of ultra-high strength steel fiber reinforced concrete (CFST) columns subjected to blast load was studied experimentally. The reflection pressure time-history curves of three different loadings were measured. The hollow and solid square cross-section and circular section steel tubes The dynamic response of ultra-high strength steel fiber reinforced concrete columns is discussed. The influence of different folding distances is discussed. The experimental results show that the antiknock performance of the square section steel pipe ultra-high strength steel fiber reinforced concrete columns is better than that of the circular section under the same inner and outer diameter (side length). If properly designed, the explosion-proof performance of the hollow square section steel ultra-high strength steel fiber reinforced concrete column is better than that of the solid square section.