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针对剪力墙约束边缘构件受力复杂、施工困难的特点,提出了在剪力墙约束边缘构件中采用钢纤维局部增强的方法来改进其抗震性能,并将其命名为边框钢纤维混凝土剪力墙.结合试验结果和有限元数值模拟,研究了钢纤维体积率和剪跨比对边框钢纤维混凝土剪力墙承载力、位移和延性的影响,并与整体钢纤维混凝土剪力墙相应的抗震性能进行了对比分析.结果表明,在剪力墙约束边缘构件内掺加钢纤维对于剪力墙结构的承载力和延性均具有一定的提升效果,其中位移延性最大可提升约102.8%.相对于整体钢纤维混凝土剪力墙,采用边框钢纤维混凝土剪力墙具有较大的经济优势,而且并未牺牲整体钢纤维剪力墙太大承载力和位移延性.
In view of the complex force and difficult construction of the bounding edge members of shear wall, a method of local strengthening of steel fibers is proposed to improve the seismic performance of the bounding edge members of shear wall, and named as the shear strength of the border steel fiber reinforced concrete The influences of the volume fraction of steel fiber and the shear span ratio on the bearing capacity, displacement and ductility of the FRP shear wall of FRP steel were studied by combining the experimental results with the numerical simulation of the finite element method. The results were compared with those of the whole FRP shear wall The results show that the addition of steel fiber to the confined edge members with shear wall can improve the bearing capacity and ductility of the shear wall structure with the displacement ductility up to about 102.8% The overall steel fiber reinforced concrete shear wall, the use of steel fiber reinforced concrete frame shear wall has greater economic advantages, but does not sacrifice the whole steel fiber shear wall is too large bearing capacity and displacement ductility.