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新型低剪力墙非线性有限元分析与试验研究
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Nonlinear Finite Element Analysis and Experimental Study on a New Type of Low-rise Shear Wall
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    摘要:

    针对传统低剪力墙延性的不足,提出了一种改进方案.为了准确把握新型配筋方案的优势,共完成了两片低剪力墙的低周反复加载试验,考察了它们在往复荷载作用下的极限承载力性能、滞回特性、延性以及破坏特征等.以试验研究为基础,采用ABAQUS有限元分析软件,对比分析了4种不同配筋形式低剪力墙的非线性性能,并对新型低剪力墙竖缝的开设位置进行了研究.试验结果与有限元分析表明:设置钢筋暗支撑、开缝及设置钢板的方式均可改善传统低剪力墙的延性及变形性能;与带暗支撑低剪力墙相比,新型低剪力墙的变形能力及耗能能力提高显著,抗震性能更好,且具有明显的多道抗震防线.

    Abstract:

    A new reinforcement scheme to improve the ductility of common low shear-span ratio shear wall was put forward. In order to reveal the advantage of the new reinforcement scheme, an experimental study of the seismic performance of two different types of shear walls under cyclic loading was carried out, and their bearing capacity, hysteresis property, ductility and failure phenomena under reciprocating load were investigated. Based on the experimental study and ABAQUS software, the nonlinear performances of four shear walls with different reinforcement types were compared and analyzed systematically, and the locations of vertical seams were studied in the same method. The test results and finite element analysis have indicated that improving the ductility and deformation capacity of common low shear-span ratio shear wall by means of configuring concealed bracings or slotting and configuring steel plate are feasible. It has also shown that, compared with the low-rise shear wall with a common reinforcement scheme, the new type of low-rise shear wall shows greatly improved ductility, energy dissipation capacity and better seismic performance, and has multiple seismic fortification lines.

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汪梦甫,陈文龙,宋兴禹.新型低剪力墙非线性有限元分析与试验研究[J].湖南大学学报:自然科学版,2013,40(11):6~12

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