| 摘要: |
| 为研究准静态荷载下纤维分布对活性粉末混凝土（RPC）构件受剪、受拉力学性能的影响，利用电磁场定向装置制备了定向分布钢纤维活性粉末混凝土（ASFRPC）试件，并对其进行双面直剪和劈裂抗拉试验，结合图像分析法研究了纤维方向、纤维长径比对钢纤维活性粉末混凝土（SFRPC）试件受剪、受拉力学性能的影响.结果表明：相同条件下ASFRPC试件的抗剪强度、峰值剪切变形和剪切韧性相比于SFRPC试件均有了显著的提高，表现出更高的抗剪、抗拉性能. |
| 关键词: 定向分布钢纤维 活性粉末混凝土 抗剪强度 抗剪韧性 劈拉强度 |
| DOI：10.3969/j.issn.1007-9629.2023.01.014 |
| 分类号:TU528.58 |
| 基金项目:浙江省基础公益技术研究计划项目（LGF21E080003） |
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| Shear Performance of Aligned Steel Fiber Reinforced RPC |
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LI Kunliang1, YANG Kejia1, LI Kunkun2
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1.School of Architecture Engineering， Taizhou University， Taizhou 318000， China;2.School of Architecture Engineering， Wenzhou University， Wenzhou 325035， China
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| Abstract: |
| The effect of fiber distribution on shear and tensile properties of reactive powder concrete(RPC) components under quasi-static load was studied. The aligned steel fiber reinforced reactive powder concrete（ASFRPC） specimen was prepared by electromagnetic field directional device. The effects of fiber direction and fiber length-diameter ratio on the shear properties and splitting tensile properties of steel fiber reinforced reactive powder concrete(SFRPC) specimens with constant random direction distribution were studied by using double-sided direct shear and splitting tensile tests. The results show that under the same conditions， the shear strength， peak shear deformation and shear toughness of ASFRPC specimens are significantly improved compared with those of randomly distributed specimens. ASFRPC specimens show better shear and tensile properties. |
| Key words: aligned steel fiber reactive powder concrete shear strength shear toughness splitting tensile strength |
