【作者】 张云升； 孙伟； 秦鸿根； 张亚梅； 李丽；

【Author】 ZHANG Yunsheng,SUN Wei ,QIN Honggen, ZHA Yamei ,LI Li(Department of Materials Science and Engineering) Southeast University, Nanjing 210096)

【机构】 东南大学材料科学与工程系；

【摘要】 本文对三个基体强度等级(C30,C50,C70),六种纤维外形(平直、端勾、哑铃、盾铃、锯齿、铣销),六种长径比(30,35,40,50,60,70),四种纤维掺量(0.5%,1.0%,1.5%,2.0%)的钢纤维混凝土的剪切性能进行了系统研究。根据实验结果,探讨基体强度等级和纤维外形对混凝土抗剪性能的影响,并根据材料复合理论建立起钢纤维混凝土抗剪性能的数学计算模型。在此基础上,利用数理统计的理论和方法确定了模型参数,并进行了相关性检验。检验结果表明,该模型与实验结果吻合较好,可用此指导钢纤维混凝土的工程实践。更多还原

【Abstract】 In this paper, shear strength of steel fiber concrete was investigated with 3 grades of strength, 6 types of fiber geometry, 6 aspect ratios and 4 volume fraction of fibers. Based on the testing results, the influence of matrix strength grades and fiber geometry on shear behaviors was discussed and mathematics model of shear behaviors was established. Parameters in model were then determined using statistics method. The correlation verification showed that there was good agreement between the calculation values and testing values.更多还原