层布式钢纤维混凝土梁荷载-挠度曲线数值模拟  

Numerical simulation of load-deflection curve of layered steel fiber reinforced concrete beam

作　　者：范小春[1] 袁海庆[1] 卢哲安[2] 

机构地区：[1]武汉理工大学土木工程与建筑学院,湖北武汉430070 [2]武汉理工大学道路桥梁与结构工程湖北省重点实验室,湖北武汉430070

出　　处：《混凝土》2008年第9期12-15,共4页Concrete

基　　金：国家<纤维混凝土结构技术规程>资助项目([2000]建标协字第15号)

摘　　要：采用有限元软件ABAQUS对层布式钢纤维混凝土梁三点受弯情况下荷载-挠度关系进行了数值模拟,计算结果与相关试验结果符合良好。数值试验结果表明,层布式钢纤维对混凝土梁的弹性阶段受力没有显著的影响,但可以明显提高混凝土梁的极限承载力。层布式钢纤维混凝土梁弯曲破坏模式明显区别于素混凝土梁,表现出明显的延性破坏特征。The numerical simulation of load-deflection curve of layered steel fiber reinforced concrete beam under three-point loads is performed using ABAQUS.The results of simulation are generally in conformance with the experiment.The results of numerical simulation show that layered steel fiber has little contribution to the elastic capacity of concrete beam.But it can improve the ultimate capacity of concrete beam obviously.The bending collapse style of layered steel fiber reinforced concrete beam is different from plain concrete beam evidently with obvious ductile characteristic.

关 键 词：层布式钢纤维混凝土 荷载-挠度曲线 数值模拟 有限元法 

分 类 号：TU528.572[建筑科学—建筑技术科学]