PVC管约束钢筋玄武岩纤维混凝土(BFRC)短柱轴心受压试验研究  

Experimental Study on PVC Pipe Restrained of Reinforced Basalt Fiber Concrete (BFRC) Short Columns under Axial Compression

作　　者：王新忠[1,2] 李传习[2] 周维[1] 谢合良 凌锦育 

机构地区：[1]湖南城市学院,益阳413000 [2]长沙理工大学,长沙410114

出　　处：《硅酸盐通报》2017年第7期2430-2435,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家重点基础研究发展计划(973计划)(2015CB057701);国家级大学生创新项目(201611527001)

摘　　要：为了研究PVC管和短切玄武岩纤维共同作用于钢筋混凝土短柱对短柱承载能力影响,对PVC管约束配有螺旋箍筋的钢筋玄武岩纤维混凝土(PVC-BFRC)短柱,钢筋玄武岩纤维混凝土(BFRC)短柱和钢筋混凝土(RC)短柱轴心受压试验,并对实验结果进行对比分析,结果显示,PVC-BFRC短柱极限承载力相对RC短柱提高了45.7%,相对于BFRC短柱提高了11.6%,PVC-BFRC短柱轴心受压极限承载力峰值出现和PVC管破坏几乎同时发生。峰值时PVC-BFRC短柱竖向位移明显大于其他两种短柱的竖向位移,塑性特征更加明显;研究表明,PVC管和短切玄武岩纤维共同作用下对钢筋混凝土短柱轴心受压承载力具有较好的增强功能,提高了钢筋混凝土短柱的延性特征。To study the mechanical behavior of PVC-BFRC stub columns with PVC-BFRC bars,the effects of the short columns of reinforced concrete（ RC）,the short columns of reinforced concrete basalt fiber reinforced concrete（ BFRC）,the short columns of PVC-BFRC were studied and analyzed. The results show that the ultimate load-carrying capacity of PVC-BFRC short column is 45. 7% higher than RC short column,11. 6% higher than BFRC short column,and the ductility of PVC-BFRC short column is better than RC short Column,PVC-BFRC short column axial compression ultimate load capacity and PVC pipe damage almost simultaneously. The vertical displacement of PVC-BFRC short column at the peak value is obviously greater than that of the other two short columns,and the plasticity is more obvious. The results show that under the combined action of PVC pipe and chopped basalt fiber,the axial load of reinforced concrete short columns and the ductility of reinforced concrete short columns is improved.

关 键 词：PVC管 玄武岩纤维 短柱 轴心受压 

分 类 号：TU528[建筑科学—建筑技术科学]