摘要
针对不同掺量的局部钢纤维增强混凝土（PSFRC）构建了细观数值模型,采用统计损伤方法模拟了PSFRC从微裂纹萌生、扩展直至贯通的全过程,通过对破坏机理和力学性能的分析,得出PSFRC初裂强度、极限强度、弯曲韧性和变形能力比素混凝土、普通钢纤维混凝土有明显改善,并随钢纤维掺量的增加其改善程度增大,性价比提高,施工难度也大大降低。
Numerical models of partial steel fiber reinforced concrete （PSFRC） with different admixture rate is estab- lished. The fracture track, phenomenon of crack initiation, coalescence and development, the crack interaction and final penetration are simulated with statistical damage method. Through analysis of failure mechanism and mechanical perform- ance, PSFRC has significantly improved in initial cracking strength, ultimate strength, flexural toughness and deforma- tion capacity compared with plain concrete and steel fiber reinforced （SFRC）. With the increase of steel fiber, the performance and cost are raised, and the difficulty of construction is also greatly reduced.
出处
《水电能源科学》
北大核心
2012年第4期41-43,共3页
Water Resources and Power
基金
国家自然科学基金青年基金资助项目（51008009）
关键词
局部掺
全掺
钢纤维
混凝土
细观模拟
partially admixture~ fully admixture~ steel fiber
concrete~ micro simulation
