考虑剪切变形的延性联肢墙位移曲率延性关系研究

在连续连接介质模型和修正比拟桁架模型基础上,通过理论分析分别推导了计入剪切变形的延性联肢墙屈服位移和极限位移的算式,首次建立起考虑剪切变形的延性联肢墙位移曲率延性关系,并通过与13片联肢墙试验结果的对比研究验证了该延性关系的准确性。研究结果表明,考虑剪切变形的延性联肢墙位移延性系数离散程度较小、均匀性较好,建立的延性关系可应用于联肢剪力墙结构的能力设计。

RELATIONSHIP BETWEEN CURVATURE AND DISPLACEMENT DUCTILITIES OF DUCTILE COUPLED WALLS CONSIDERING SHEAR DEFORMATIONS

Based on the continuous connecting medium model, the formulae for calculating yield displacement and ultimate displacement of ductile coupled walls considering shear deformation were derived theoretically. The modified compared truss model was employed to analyse the shear deformation of the plastic hinge region. For the first time, the relationships between curvature and displacement ductilities of ductile coupled walls were established and verified by comparing with experiment results of 13 coupled walls. The comparison showed that the displacement ductility factors considering shear deformation have a lower level of scarcity and better uniformity. The ductility relationship established for ductile coupled walls is suitable for ductility analysis and capacity design of coupled wall structures.