SEISMIC RESPONSE OF CONCRETE COLUMNS REINFORCED BY STEEL-FRP COMPOSITE BAR (SFCB) WITH DIFFERENT POST-YIELD STIFFNESSES

摘要：

A steel-fiber reinforced polymer (FRP) composite bar (SFCB) is compounded by steel and continuous fiber. Previous studies have shown that SFCB is bilinear before fiber fracture and exhibits stable post-yield stiffness, small residual strain and good recoverability after the steel yields. In this paper, horizontal low cyclic loading tests were conducted to two concrete columns reinforced by SFCB and one normal RC column. Test results show that: compared with normal RC column, concrete columns reinforced by SFCB had stable post-yield stiffness, resulting in smaller residual displacement and better recoverability; due to basalt fibers higher elongation rate, seismic performance of columns reinforced by steel-BFRP (basalt fiber reinforced polymer) composite bar was better than that reinforced by steel-CFRP (carbon fiber reinforced polymer) composite bar.

关键词： steel-FRP composite bar post-yield stiffness concrete column residual displacement

作者: Ze-Yang Sun Gang Wu Jian-Bing Hao Zhi-Shen Wu

作者单位: International Institute for Urban Systems Engineering, Southeast University, Nanjing 210096, P.R. Ch International Institute for Urban Systems Engineering, Southeast University, Nanjing 210096, P.R. Ch

会议类型: 国际会议

会议名称: 2009年土木工程结构创新与可持续发展国际会议(The International Symposium on Innovation & Sustainability of Structures in Civil Engineering)

会议地点: 广州

会议语种:英文

页码: 1451-1456

在线出版日期: 2009-11-28（万方平台首次上网日期，不代表论文的发表时间）