摘要
通过对6根配置不同强度、不同箍筋间距的高强混凝土柱在轴向压力作用下进行非线性有限元数值模拟,研究了混凝土轴压柱应力—应变关系曲线和裂缝开展规律、箍筋约束混凝土的机理、箍筋间距和箍筋强度对混凝土轴压柱承载力的影响。结果表明:伴随着箍筋间距的加密和箍筋强度的提高,混凝土柱的承载力和峰值应变有着显著的提高。
Based on FE Analysis of six high-strength concrete columns confined by different intensity and different spacing spiral stirrup under axial pressure,the specimen stress-strain relationship curves and crack propagation rules were researched.Confining mechanism of spiral stirrup was discussed.And then the effect of the spacing and strength of stirrup were analyzed based on the numerical results.The results show that the bearing capacity and peak strain increase significantly with the stirrup ratio and stirrup strength increase.
出处
《河北工程大学学报（自然科学版）》
CAS
2011年第2期19-23,共5页
Journal of Hebei University of Engineering:Natural Science Edition
关键词
高强混凝土
高强螺旋箍筋
应力-应变曲线
裂缝
配箍率
high-strength concrete
high-strength spiral stirrup
stress-strain curves
crack
ratio of hoops
