中高剪跨比双钢板-混凝土组合剪力墙受力性能有限元分析

发布时间：2018-01-24 18:28

本文关键词： 双钢板-混凝土组合剪力墙中高剪跨比有限元分析抗震性能　出处：《建筑结构学报》2015年S2期 　论文类型：期刊论文

【摘要】：基于中高剪跨比双钢板组合剪力墙的试验结果,在MSC.MARC平台下建立有限元模型,采用分层壳单元模拟双钢板组合剪力墙,模型考虑地梁对应变渗透的影响。对比表明计算模型与试验结果吻合良好。基于该有限元模型分析了轴压比、混凝土抗压强度、钢板屈服强度、含钢率、剪跨比等参数对剪力墙的刚度、承载力和极限位移角的影响。分析表明:双钢板剪力墙在大震下的轴压比不宜超过0.4。增加混凝土抗压强度、钢板屈服强度或含钢率均会显著增加承载力,但随着混凝土抗压强度的增加,极限位移角降低。双钢板剪力墙压弯初始抗侧刚度主要由混凝土贡献,含钢率对初始抗侧刚度影响较小。此外,增大剪跨比可提高剪力墙的极限位移角。
[Abstract]:Based on the experimental results of the composite shear wall with medium and high span ratio, the finite element model is established under the MSC.MARC platform, and the layered shell element is used to simulate the composite shear wall with double steel plate. The model considers the influence of the ground beam on the strain permeability. The comparison shows that the calculated model is in good agreement with the experimental results. Based on the finite element model, the axial compression ratio, the compressive strength of concrete, the yield strength of steel plate and the steel content are analyzed. The influence of shear span ratio on the stiffness, bearing capacity and ultimate displacement angle of shear wall. The analysis shows that the axial compression ratio of double steel plate shear wall should not exceed 0.4 under the strong earthquake, and increase the compressive strength of concrete. The ultimate displacement angle decreases with the increase of compressive strength of concrete. The initial lateral stiffness of double steel plate shear wall is mainly contributed by concrete. The steel ratio has little effect on the initial lateral stiffness. In addition, the ultimate displacement angle of the shear wall can be increased by increasing the shear span ratio.
【作者单位】：清华大学土木工程系;清华大学北京市钢与混凝土组合结构工程技术研究中心;
【基金】：国家自然科学基金项目(51222810)
【分类号】：TU398.9
【正文快照】： 0引言钢板-混凝土组合剪力墙由现场浇筑的混凝土、栓钉连接件与钢板组成。根据钢板与混凝土板的相对位置不同,可分为双钢板-混凝土组合剪力墙和内嵌钢板混凝土组合剪力墙。在双钢板-混凝土组合剪力墙中,暗柱中的钢板对混凝土具有约束作用,可提高混凝土的强度与极限压应变[1]。

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