摘要
针对不同钢纤维体积率的钢纤维混凝土(SFRC)建立了包含骨料、砂浆、界面过渡区(ITZ)和钢纤维的细观数值模型,并通过模拟分离式霍普金森压杆(SHPB)试验分析钢纤维混凝土在不同钢纤维体积率下微裂纹的萌生、扩展直到贯通的全过程.模拟研究发现:钢纤维加入后延迟了混凝土试件的破坏,同时增加了试件的延展性和韧性.
The mesoscopic numerical models cotTesponding to different fiber dosages were developed with dis- tinctive consideration of the aggregates, cement mortar, interracial transition zone and steel fibers, and then the complete failure processes including the initiation, development of micro-cracks and final penetration of SFRC specimens with different fiber dosages were simulated by SHPB test. The simulation results showed that the fail- ure of SFRC specimens was delayed, and their ductility and toughness also could be increased due to the addi- tion of the steel fibers.
出处
《广州大学学报（自然科学版）》
CAS
2015年第1期61-64,共4页
Journal of Guangzhou University:Natural Science Edition
基金
国家自然科学基金专项仪器基金资助项目(51227006)
