SIMULATION ANALYSIS OF LOAD DISTRIBUTION OF GFRP BARS IN CONCRETE UNDER DIRECT PULLOUT

摘要：

The objective of this study is to investigate the bond strength and load distribution of glass fiber reinforced plastic (GFRP) bars in concrete under direct pullout. The pullout tests of two GFRP bars with two diameters of 12mm and 14mm embedded in concrete specimens were carried out. The nonlinear finite-element model for bond behavior was established and the simulations including load-slip curve, GFRP stress distribution, bond stress distribution and local slip distribution along the embedment length were analyzed. The studies indicate that the load-slip curve is divided by five stages from the specimen loaded initially to failure. GFRP stress distribution along the embedment length is nonlinear. With increasing load, the peak bond stress improves and tends to move progressively towards the free end. Local slip distribution is typically exponential or quadratic curve. Additionally, the simulations results on bond strength, slip and loadloaded and free end slip relationship curve, GFRP stress distribution agreesclosely with the experimental results.

关键词： GFRP bars concrete bond strength load distribution FE simulation

作者: Hai-Xia Zhang Dan-Dan Kong Hao-Miao Wu

作者单位: School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, P.R. China School of Civil Engineering, Hebei University of Technology, Tianjin 300130, P.R. China

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: 127-132

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）