纤维增强水泥基复合材料加固梁柱节点抗压性能分析  

Analysis of Compressive Properties of Green Fiber Reinforced Cement-based Composite Reinforced Building Beam-column Joints

作　　者：辛芳 XIN Fang(Shandong Fengze Engineering Project Management Co.,Ltd.,Weifang 261000,China)

机构地区：[1]山东沣泽工程项目管理有限公司,潍坊261000

出　　处：《粉煤灰综合利用》2025年第1期45-48,104,共5页Fly Ash Comprehensive Utilization

摘　　要：为提升加固梁柱节点的安全性,研究纤维增强水泥基复合材料加固梁柱节点抗压性能。制作4组试件,1组普通梁柱节点试件,3组纤维加固梁柱节点试件,纤维体积掺量分别为1.0%、1.5%、2.0%,比较加固与未加固试件的密度、抗压性能、抗弯性能。研究结果表明:经过加固后的试件密度均较高,纤维体积掺量为1.5%的纤维加固梁柱节点试件的密度相对较高;添加1.5%复合材料加固后试件的抗压强度始终保持最高;全部试件弹性刚度下降幅度略小,加固后,受压力影响相对较小;初始加载阶段抗弯强度迅速下降,之后无大幅度下降,而加固后试件的抗弯强度达10 MPa,抗弯能力明显较强。水泥基复合材料加固梁柱节点时,最佳养护时间为28 d,最合适的纤维体积掺量为1.5%。To improve the safety of reinforced beam column joints,the compressive performance of fiber-reinforced cement-based composite materials reinforced beam column joints is studied.Produce 4 sets of specimens,1 set of common beam column joint specimens,and 3 sets of fiber-reinforced beam column joint specimens,with fiber volume contents of 1.0%,1.5%,and 2.0%,respectively.Compare the density,compressive performance,and bending performance of reinforced and unreinforced specimens.The research results show that the density of the reinforced specimens is relatively high,and the density of the fiber-reinforced beam column joint specimens with a fiber volume fraction of 1.5%is relatively high;The compressive strength of the specimen remains the highest after adding 1.5%composite material reinforcement;The decrease in elastic stiffness of all specimens is slightly small,and after reinforcement,they are relatively less affected by pressure;The bending strength rapidly decreases during the initial loading stage,and there is no significant decrease thereafter.However,after reinforcement,the bending strength of the specimen reaches 10 MPa,indicating a significantly stronger bending capacity.When reinforcing beam column joints with cement-based composite materials,the optimal curing time is 28 days,and the most suitable fiber volume fraction is 1.5%.

关 键 词：绿色纤维 增强水泥基 复合材料 加固建筑 梁柱节点 抗压性能 

分 类 号：TU528.041[建筑科学—建筑技术科学]