Experiment Study on Influence of Initial Stress in Concrete Filled Steel Tubular Latticed Columns under Axial Load

摘要：

　　The testing of concrete filled steel tubular (CFST) latticed columns with initial stress had been conduc ted under axial load.The set-ups subjected to initial stress, the curves of load to deformation as well as the hooping effect were analyzed.The trial results indicate that the CFST columns with initial stress have smaller of combined stiffness and ultimate load-carrying capacity as compared with CFST columns without initial stress.Furthermore, the presence of initial stress will advance the coming of plastic phase, and contempora ry, put off the appearances of hooping effect so that it can not be sufficient exerted, which decrease the ulti mate load-carrying capacity at all.Nevertheless, the mechanical behaviour of lacing tubes doesnt vary with the initial stress and all the lace tubes are stayed in the elastic phase during the testing.

作者: Guan Yu Fuyun Huang Baochun Chen Jianzhong Li

作者单位: College of Civil Engineering, Fuzhou University, Fuzhou, Fujian, China College of Civil Engineering, Fuzhou University, Fuzhou, Fujian, China; College of Civil Engineering College of Civil Engineering, Tongji University, Shanghai, China

会议类型: 国际会议

会议名称: The 5th International Symposium on Innovation & Sustainability of Structures in Civil Engineering (ISISS2013)(第五届创新和可持续发展土木工程结构国际学术研讨会)

会议地点: 哈尔滨

会议语种:英文

页码: 382-391

在线出版日期: 2013-07-06（万方平台首次上网日期，不代表论文的发表时间）