ULTIMATE BEARING CAPACITY OF RC BEAMS REINFORECD BY PRESTRESSED AFRP SHEET UNDER 4-POINT BENDING

摘要：

The computation results of a layered shear-lag model on the stress redistributions of prestressed AFR sheet-reinforced RC beams with a crack under 4-point bending and the stress distributions of each sublayer were adopted.On the basis of this,an existing modified shear-lag model was developed and used to further study the stress concentrations induced by aramid bundle fractures in sheet;and then the statistical strength and ultimate bearing capacity of beams strengthened with prestressed AFRP sheet under 4-point bending were obtained by using a microstatistical failure theory.The results obtained relatively coincide with the existing test values.

关键词： RC beam pre-stress: AFRP four-point bending ultimate bearing capacity

作者: Q.D.Zeng W.Jing Y.L.Zhuo

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: 671-674

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）