钢纤维再生混凝土压-剪受力分析  

Compression-shear Force Analysis of Steel Fiber Recycled Concrete

作　　者：朱斌[1] 张永刚[1] 张丽 Zhu Bin;Zhang Yonggang;Zhang Li(Gongqing College of Nanchang University,Gongqingcheng,Jiangxi 332020;Gandong College,Fuzhou,Jiangxi 344000)

机构地区：[1]南昌大学共青学院,江西共青城332020 [2]赣东学院,江西抚州344000

出　　处：《江西建材》2024年第7期79-82,共4页

基　　金：江西省教育厅科学技术研究项目《钢纤维再生混凝土双轴受力研究》(项目编号:GJJ2203806)。

摘　　要：为研究钢纤维再生混凝土的压-剪复合轴力状态性能,文中掺入不同体积率的钢纤维(0、1%、2%和3%),和同等条件的钢纤维普通混凝土的压-剪力学性能进行对比分析。通过选取轴压荷载分别为0和10 MPa,得到不同工况下破坏形态和位移-荷载曲线。结果表明,钢纤维的存在可提高再生混凝土和普通混凝土的剪切强度值,且剪切破坏后可保持试件的整体性;轴向压力的存在试件的剪切破坏面有明显的摩擦痕迹,但有效提高抗剪强度值。根据数学回归分析,得出峰值荷载与钢纤维量的线性关系。To study the compression-shear composite axial state performance of steel fiber recycled concrete,different volume rates of steel fibers(0,1%,2%and 3%)were added,and the compression-shear mechanical properties of steel fiber normal concrete with the same conditions were analyzed in comparison.By selecting the axial compressive loads of O and 10 MPa,the damage patterns and displacement-load curves were obtained under different working conditions.The results show that:the presence of steel fibers can increase the shear strength value of recycled concrete and ordinary concrete,and the integrity of the specimen can be maintained after shear damage;the presence of axial pressure specimens have obvious friction traces on the shear damage surface,but it effectively improves the shear strength value.According to the mathematical regression analysis,the linear relationship between the peak load and the amount of steel fiber was obtained.

关 键 词：再生混凝土 钢纤维 压-剪试验 剪切峰值荷载 

分 类 号：TU528[建筑科学—建筑技术科学]