2023年土耳其强震作用下不同结构模型的抗震性能及地震损伤分析

Analysis of Seismic performance and seismic damage of Different Structure Models under Strong Earthquakes in Turkey in 2023

2023年2月6日土耳其发生M_(W)7.8地震和M_(W)7.5地震,造成土耳其多个城市出现严重人员伤亡和建筑物倒塌。为判断按照中国建筑抗震设计规范设防的多层混凝土建筑结构在本次地震作用下的破坏情况,对中国8度设防区某4层混凝土结构办公楼,采用大型通用有限元软件SAUSG2022,输入土耳其地震3123台站地震动记录,分别对框架结构、框剪结构、隔震结构和减震结构4种结构模型进行弹塑性动力时程分析。结果表明:框架结构、框剪结构和隔震结构在地震动作用下损伤严重,按变形标准判断有倒塌风险;采用黏滞阻尼器减震技术的结构虽然也有一定程度的损伤,但损伤程度有限,建筑物无倒塌风险。

On February 6,2023,two earthquakes of M_(W)7.8 and M_(W)7.5 struck Turkey,causing serious casualties and building collapse in many cities in Turkey.In order to judge the damage of multi-storey concrete building structures builted according to Earthquake resistant design code(GB 50011—2010)in China under two Turkey earthquakes,taking a four-story concrete structure office building in the VIII fortification area as the example,we analyzed the elastic-plastic dynamic time history analysis of four kinds of structure models,including frame structure,frame-shear wallstructure,isolated structure and damped structure when inputing ground motion of Turkey earthquake recorded by Station 3123 by using the general finite element software SAUSG2022.The results show that the frame,frame-shear wall and isolated structures are severely damaged and are judged to be at high risk of collapse according to the deformation criteria.Although the structure with the viscous damper damping is also damaged to some extent,the building is not at risk of collapse due to its controllable damage.