重庆大学学报2017，Vol.40Issue(7)：9-18,10.DOI:10.11835/j.issn.1000-582X.2017.07.002
复合加固钢筋混凝土梁抗弯性能试验
Experiments on the bending performance of composite reinforced concrete beam
摘要
Abstract
The effect of different reinforcement quantities and strengthening history on the bending performance of concrete beam was analyzed by pasting CFRP in the tension zone and anglesteel in the compressive zone of 7 reinforced concrete beams.The stress-strain curves and the load deflection curves of the steel and the CFRP were obtained.The results show that the ultimate bearing capacity of test beams reinforced by CFRP and angle steel increases significantly,and external reinforcement material can effectively delay or inhibit the development of cracks.For the loading and unloading reinforcement of reinforced concrete beams,there are varying degrees of strain hysteresis in reinforcement materials.And the utilization rate of the CFRP and the angle steel on the unloading reinforced beams is better than that on the no-unloading reinforcement beam.Calculation results of ultimate bearing capacity obtained by experiment agree well with the test values.关键词
复合加固/抗弯承载力/二次受力/应变滞后Key words
composite reinforcement/bending bearing capacity/secondary stress/strain lag分类
建筑与水利引用本文复制引用
曹芙波,尹润平,王晨霞..复合加固钢筋混凝土梁抗弯性能试验[J].重庆大学学报,2017,40(7):9-18,10.基金项目
包头市科技计划项目(2015X2003-2).Supported by the Baotou Science and Technology Plan Projects(2015X2003-2). （2015X2003-2）
