基于构件的钢筋混凝土核心筒结构地震损伤分析  

Seismic damage analysis for reinforced concrete core walls based on members

作　　者：郑山锁[1] 徐强[1] 杨丰[1] 孙龙飞[1] 杨威[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《振动与冲击》2014年第17期68-73,89,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金(50978218;51108376);国家科技支撑计划(2013BAJ08B03);长江学者和创新团队发展计划;高等学校博士学科点专项科研基金(20106120110003);陕西省科研项目(2012K12-03-01;2010JK633;2011KTCQ03-05)

摘　　要：为了研究地震作用下钢筋混凝土核心筒结构的损伤,基于低周反复荷载作用下钢筋混凝土剪力墙及连梁的损伤模型,通过加权系数法合理地考虑局部损伤向整体损伤迁移转化的多尺度效应,建立了能够反映构件损伤、楼层损伤以及整体结构损伤三者之间迁移演化规律的钢筋混凝土核心筒地震损伤模型。结合试验结果,对损伤模型的有效性进行了验证,并给出了钢筋混凝土核心筒的损伤状态及相应的损伤指数范围。结果表明,该损伤模型能够较好地描述钢筋混凝土核心筒结构的地震损伤发展过程与程度,研究结果可为该类结构的地震损伤评估以及基于损伤的抗震设计方法的建立提供理论依据。To study damages of reinforced concrete core walls under earthquake. Based on damage models of reinforced concrete shear wall members and coupled beam members under low cycles reversed loading, using the weighted coefficient method to study the multi-scale effect of migration and conversion from member damage to structural damage, the global damage model reflecting migration and evolution law from member damage to local damage and global damage was established. The validity of the damage model was verified with the test results. The damage states and the corresponding damage index range of reinforced concrete core walls were defined by combining the damage indexes. The results showed that the damage model can describe the seismic damage evolution process and the damage level of reinforced concrete core walls better. The study provided a theoretical basis for the seismic damage assessment and the establishment of damage-based earthquake-resistant design method of this type of structures.

关 键 词：钢筋混凝土核心筒 损伤分析 整体损伤模型 多元增量动力分析 抗震性能 

分 类 号：TU528.1[建筑科学—建筑技术科学]