Nonlinear Finite Element Buckling Analysis of Rectangular Reinforced Concrete long Columns Confined with Carbon Fiber Reinforced Plastic Sheets under Axial Compression
Owing to some problems in their stability of building structures in service, the general software ANSYS is adopted to establish the finite element models of rectangular reinforced concrete long columns confined with CFRP sheets under axial compression and used to analyze the influence of CFRP sheets to these structural buckling loads.Height of columns, layers of CFRP sheets, concrete grade,longitudinal rebar diameter, stirrup diameter and stirrup spacing are some factors considered. Based on the nonlinear finite element buckling analysis of these columns, some major conclusions are summarized as follows: (1) The enhanced level of buckling load descends with columns heights increasing; (2) The buckling load rises along with the increasing number of layers on a nonlinear manner; (3)The buckling loads increment is hardly dependent of concrete grade, longitudinal rebar diameter, stirrup diameter and stirrup spacing; (4) The improvement is not very obvious to use CFRP sheets to strengthen the structure when its stability goes wrong. Influences of CFRP sheets to rectangular reinforced concrete long columns under axial compression can be found by analyzing the stability of these columns, and the analysis results are available for the strengthening of some structures in practice.
Nonlinear finite element stability reinforced concrete long column carbon fiber reinforced plastic(CFRP) strengthening axial compression
Qingxin Ren Tingguo Chen Chengkui Huang Yanhua Liu
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 11 College of Water Resource, Shenyang Agricultural University, Shenyang 110161, China
国际会议
杭州
英文
1348-1350
2006-10-12（万方平台首次上网日期，不代表论文的发表时间）