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辛   芳

（山东沣泽工程项目管理有限公司 ，潍坊 261000)

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% 。

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

中图分类号：TU528 . 041            

文献标志码：A            

文章编号： 1005- 8249  (2025)  01- 0045- 05

DOI:10. 19860/j.cnki.issn1005 - 8249.2025 .01 .009

 

XIN Fang

(Shandong Fengze Engineering Project Management Co. ，Ltd. ，Weifang 261000 ,  China)

Abstract: 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 unreinforced 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 10MPa, 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%.

Key words: green fiber; reinforced cement base; composite material; reinforcing buildings; beam-column joint; compressive performance

 

作者简介： 辛    芳  (1974—) , 女，本科，高级工程师 ，研 究方向：建筑工程 ，新型低碳环保建材。

收稿日期：2023- 03- 21