INITIAL CRACKING OF RC BEAMS STRENGTHENED BY PRESTRESSED AFRP SHEET UNDER FOUR-POINT BENDING

摘要：

On the basis of the feature of 4-point bending failure for prestressed aramid fiber sheet-reinforced RC beams,a layered shear-lag model with flaw was established to study the stress redistribution of RC beam strengthened by AFRP sheet under 4-point bending,and then the stress distributions for all sub-layers are obtained.Combined with the energy method,the initial cracking of RC beams reinforced by AFRP sheet was studied,and initial cracking loads were got.The results obtained relatively coincide with the existing test values.The present method provides a new research approach for the bending failure of prestressed reinforced components.

关键词： RC beam pre-stress AFRP four-point bending initial cracking

作者: Y.Y.Kuang Q.D.Zeng Y.L.Zhou

作者单位: School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,China

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 889-892

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）