混杂纤维增强混凝土深梁受弯性能试验研究  

Experimental study of flexural behavior of hybrid fiber reinforced deep beam

作　　者：夏广政[1] 夏冬桃[1] 徐礼华[2] 池寅[2] 

机构地区：[1]湖北工业大学土木工程与建筑学院,湖北武汉430064 [2]武汉大学土木建筑工程学院,湖北武汉430072

出　　处：《华中科技大学学报（自然科学版）》2007年第11期31-33,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

摘　　要：通过对14根钢纤维和聚丙烯纤维混杂增强高性能混凝土深梁的正截面受弯性能试验研究,分析了深梁的抗裂弯矩、屈服弯矩、极限承载力以及正截面受弯破坏形式与混杂纤维体积掺量的关系,研究结果表明:掺加少量的钢纤维(50~78 kg/m3)和聚丙烯纤维(0.5~1 kg/m3)使深梁的开裂弯矩提高10%~40%,屈服弯矩提高50%~100%,极限承载力提高1~2倍,深梁的受弯韧性明显提高.Flexural behavior of high-performance concrete deep beam containing steel fibers and polypropylene fibers was studied experimentally. 14 hybrid fiber reinforced high-performance concrete deep beams have been was. The effects of hybrid fiber on the cracking resistance moment,yield moment and bending capacity of the normal section was analyzed.The reinforced and failure mechanisms of normal section was explored.The results showed that the cracking moment increased 10 %～40 %,the yielding moment increased 50 %～...

关 键 词：高性能混凝土 混杂纤维 深梁 抗裂弯矩 受弯极限承载力 

分 类 号：TU375.1[建筑科学—结构工程]