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对玄武岩纤维网格-工程水泥基复合材料（Engineered cementitious composite,ECC）复合加固钢筋混凝土（Reinforced concrete,RC）梁抗剪性能进行试验研究，深入分析玄武岩纤维网格的强度和剪跨比对加固梁抗剪性能的影响，利用Abaqus有限元数值模拟研究玄武岩纤维网格层数和加固方式对梁受剪性能的影响。研究结果表明，与未加固试验梁相比，加固梁的开裂荷载、极限荷载和极限位移均有所增加，加固梁的极限荷载随着玄武岩纤维网格的强度增加、剪跨比减少而增加；与未加固梁相比，加固梁的极限荷载和极限位移随着玄武岩纤维网格的层数增加而增加，其中单层玄武岩纤维网格加固梁的提升幅度最大；U形加固与侧向加固效果相差仅在5%～10%，加固方式对RC梁的抗剪性能影响不大，该研究为玄武岩纤维网格-ECC复合加固RC梁工程应用提供参考。
Abstract：Conducts experimental research on the shear performance of RC beams strengthened with Basalt FRP grid-ECC(Engineered cementitious composites), and deeply analyzes the influence of Basalt FRP grid strength and shear span ratio on the shear performance of the strengthening beams, RC beam models with different Basalt FRP grid layers and strengthening methods were established using Abaqus finite element numerical simulation. The research results show that compared with the control test beam, the cracking load, ultimate load, and ultimate displacement of the strengthening beam have all increased. The ultimate bearing capacity of the strengthening beam increases with the increase of Basalt FRP grid strength and the decrease of shear span ratio; Compared with the control beam, the peak load and peak displacement of the strengthening beam increase with the number of layers of the Basalt FRP grid, with the single layer Basalt FRP grid strengthening beam showing the greatest improvement. The difference in effectiveness between U-shaped bonding and lateral bonding is only 5%～10%, and the strengthening method has little effect on the shear performance of RC beams. This study provides a reference for the engineering application of RC beams strengthened with Basalt FRP grid-ECC.
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基本信息:
DOI：10.20203/j.cnki.2095-8919.2025.03.002
中图分类号:TU375.1
引用信息:
[1]王勃,王美琪,王子诚,等.玄武岩纤维网格-ECC复合加固RC梁抗剪性能试验及有限元模拟分析[J].吉林建筑大学学报,2025,42(03):9-16.DOI:10.20203/j.cnki.2095-8919.2025.03.002.
基金信息:
吉林省科技发展计划项目(20240304147SF)
2025-06-15
2025-06-15