【摘要】 将框架结构等效为剪切型模型,采用三线型刚度退化模型,考虑累积损伤效应对结构刚度产生的影响进行时程分析,并利用改进的Park-Ang损伤模型计算得到结构的损伤情况。表明;结构的第一层损伤最为严重;地震序列不同,引起结构的损伤值也不相同;考虑损伤累积效应对结构的弹塑性地震反应有着显著的影响,建议在结构设计的第二个阶段,考虑材料的累积损伤和地震能量吸收与耗散,这样更能够体现结构的最不利反应状态,有利于制定合理的结构抗震措施。更多还原

【Abstract】 A quantitative inelastic dynamic analysis of damage to shearing modelis studied with the consideration of seismic accumulative effect.Three variants of Takeda’s model with a trilinear envelope and the improved damage model are adopted.The results indicate that first floor of the structure suffers greatest damage;the longer the duration of the earthquake,the more obvious the damage caused by energy accumulation;the damage value of structures varies by different seismic sequence;Damage accumulative effect has great influence on the dynamic behavior of structures suffering earthquakes,i.e.the overall damage of a structure will be greater when accumulative effect is taken into account.Given the results above,damage accumulative performance of building materials and energy absorption and dissipation should be considered during the second phase of structure design.Thus,the most adverse reaction of the structure can be detected and make it reasonable to resist earthquakes.更多还原