新型隔层错跨剪力墙损伤分析及对其抗震性能影响

摘要

Based on horizontal low cyclic test of new skip-floor staggered shear wall structure,the quantitative calculation formulas are suggested for damage assessment of new skip-floor staggered shear wall structure in pre-yield stage.For the purpose of quantifying damage degree of the structure,the relationship model between relative stiffness which is taken as study parameter and relative displacement is fitted based on the experimental and numerical theoretical analysis results.By use the relationship model,the damage degree of the structure stiffness is calculated in pre-yield stage which agrees well with the finite element analysis results.The practical calculation method of damage degree of the new shear wall structure is proposed in the micro-damage stage and mild-to-moderate damage stage,which provide an efficient quantitative calculation method for evaluating the damage impact on the seismic performance of the shear wall structure.%在新型隔层错跨剪力墙水平低周反复荷载试验的基础上,对新型隔层错跨剪力墙结构屈服前的损伤评估,提出了量化的计算公式;为了量化结构的损伤程度,借助试验数据以及数值理论结果,以相对刚度为研究参数,拟合出相对刚度与相对位移之间的关系,采用拟合出的相关模型对新型隔层错跨剪力墙结构屈服前期的刚度退化进行损伤计算,并与有限元分析结果进行对比,其变化规律基本一致,吻合度良好.同时给出了新型隔层错跨剪力墙结构屈服前微损伤和轻中度损伤阶段损伤程度的实用计算方法,对评估其对结构抗震性能的影响提供了良好的考虑损伤的量化计算方法.