钢管超高强钢纤维混凝土柱抗爆性能试验研究*
- 摘 要
-
（天津城建大学天津市土木建筑结构防护与加固重点实验室， 天津 300384）
［摘要］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。
［关键词］超高强纤维混凝土; 钢管混凝土柱; 爆炸荷载; 动力响应中图分类号：TU398 文献标识码：A 文章编号：1002-848X(2016)04-0045-05
Experimental study of ultrahigh performance fiber reinforced concrete filled steel tube columns under blast loadingJin Hewei, Liu Zhongxian, Liu Shenyong, Su Yu(Tianjin Key Laboratory of Civil Structure Protection and Reinforcement, Tianjin Chengjian University, Tianjin 300384, China)Abstract:The dynamic response of ultra-high performance fiber reinforced concrete filled steel tube columns under blast loading was investigated. Three reflected pressure time-history curves with different powder doses were measured during the test. Dynamic response differences of ultra-high performance fiber reinforced concrete filled steel tube columns with different cross-sections of hollow, solid square and circular sections were compared and analyzed. The effect of different equivalent distances were discussed. The test results show that on the conditions of same inner and outer diameter (side length), anti-blast performance of ultra-high performance fiber reinforced concrete filled steel tube columns with square cross section is better than circular cross section. If designed properly, anti-blast performance of ultra-high performance fiber reinforced concrete filled steel tube columns with hollow square cross section is better than solid square cross-section.Keywords:ultra-high performance fiber reinforced concrete; concrete filled steel tube column; blast loading; dynamic response
*天津市科技支撑计划项目（14ZCZDSF00016）,国家科技支撑计划项目（2012BAJ07B05）。
通讯作者：刘中宪，博士，副教授，Email: zhongxian1212@163.com。
