吴炎海¹，姚良云²
(1 广东工业大学建设学院，广州510006; 2 福建农业大学交通学院，福州350002)

[摘要]  本文进行12根圆钢管RPC轴心受压长柱和4根圆钢管RPC轴心受压短柱的试验，采集了各级荷载下试件的侧向挠度、纵向应变、极限荷载等实验数据，描述了圆钢管RPC轴心受压长柱的破坏形态，分析了圆钢管RPC轴心受压长柱荷载一挠度曲线的特点，初步探讨套箍系数、长径比对圆钢管RPC长柱承载力的影响。
[关键词] 活性粉末混凝土；钢管混凝土柱；试验研究；轴心受压；极限承载力

Research on Mechanical Behavior of Axially Loaded Circular Steel Tube Filled RPC Slender Column
Wu Yanhai¹,  Yao Liangyun²
(1 Faculty of Construction, Guangdong University of Technology, Guangzhou 510006,China; 2 School of Transportation, Fujian University of Technology, Fuzhou 350002, China)

Abstract: Based on the experimental study of 12 axially loaded circular steel tube filled RPC slender columns and 4 axially loaded circular steel tube filled RPC columns, this paper collects the data about lateral deflection.longitudinal strain and ultimate bearing capacity, describes failure modes of axially loaded circular steel tube filled RPC slender columns, and analyze the characteristics of load deflection curves. Preliminary study of axially loaded circular steel tube filled RPC slender columns influenced by hoop coefficient and slenderness ratio is discussed.
Keywords: reactive powder concrete; steel tube filled RPC column; experimental study; axially loaded; ultimate bearing capacity