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辛   芳

（山東灃澤工程項目管理有限公司 ，濰坊 261000)

摘   要 ：為提升加固梁柱節點的安全性，研究纖維增強水泥基復合材料加固梁柱節點抗壓性能。制作4 組試件，1 組普通梁柱節點試件 ，3 組纖維加固梁柱節點試件，纖維體積摻量分別為 1 . 0% 、1 . 5% 、2. 0% ,  比較加固與未加固試件的密度、抗壓性能、抗彎性能。研究結果表明： 經過加固后的試件密度均較高，纖維體積摻量為 1 . 5% 的纖維加固梁柱節點試件的密度相對較高；添加 1 . 5% 復合材料加固后試件的抗壓強度始終保持最高； 全部試件彈性剛度下降幅度略小，加固后，受壓力影響相對較小；初始加載階段抗彎強度迅速下降，之后無大幅度下降，而加固后試件的抗彎強度達 10 MPa ,  抗彎能力明顯較強。水泥基復合材料加固梁柱節點時，最佳養護時間為 28 d ,  最合適的纖維體積摻量為 1 . 5% 。

關鍵詞：綠色纖維 ；增強水泥基 ；復合材料 ；加固建筑 ；梁柱節點 ；抗壓性能

中圖分類號：TU528 . 041            

文獻標志碼：A            

文章編號： 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

 

作者簡介： 辛    芳  (1974—) , 女，本科，高級工程師 ，研 究方向：建筑工程 ，新型低碳環保建材。

收稿日期：2023- 03- 21