长钢纤维混凝土抗拉比例极限及界面损伤的细观力学分析  

Meso mechanical Analysis to Tension Proportional Limit and Interficial Damage of Steel Fiber Reinforced Concrete

作　　者：蒙云[1,2] 汤羽 

机构地区：[1]重庆交通学院桥梁工程系 [2]重庆大学

出　　处：《重庆交通学院学报》1997年第3期41-48,共8页Journal of Chongqing Jiaotong University

摘　　要：对纤维体积掺量和长径比＞８０的钢纤维砼进行了细观力学分析，实验与分析结果表明：钢纤维的物理性质、几何参数分布形式以及与砼基体之间的界面粘结状态对钢纤维砼的宏观拉伸行为有着重要影响．由此导得的抗拉比例极限公式与试验结果吻合良好．Adding steel fiber to traditional concrete improves its tension strength and crack resistance to a great extent.By the meso mechanical analysis presented in the paper,it reveals that the fibers physical properties,geometrical conditions and the interficial bonding state have a marked effect on the macroscopic tension behavior of the composite.Theoretical formula of the tension proportional limit derived here gives a good agreement to the testing results.

关 键 词：抗拉比例 极限 界面损伤 钢纤维 增强混凝土 

分 类 号：TU528.572[建筑科学—建筑技术科学]