摘要
四川省绵阳市某幼儿园地上3层,地下1层,采用多层钢筋混凝土框架结构。建设地点位于地震重点监视防御区,根据《建设工程抗震管理条例》的要求,学校、幼儿园、医院等八大类建筑必须采用隔震减震等技术,确保在设防地震下的正常使用。本工程采用消能减震技术,并根据项目特点选用VFD黏滞阻尼器。本工程使用ETABS软件结构在7度(0.1g)设防烈度地震作用下进行时程分析;采用PERFORM-3D软件进行罕遇地震作用下的计算模拟分析。计算结果显示阻尼器在设防地震和罕遇地震作用下充分耗能,减震效果良好,其弹塑性层间位移角均满足规范要求,主体结构及构件的减震目标和性能目标均达到了预期,仅个别构件出现轻微损伤,阻尼器发挥了良好的耗能能力,进一步提高了主体结构的可靠性和安全性。
A kindergarten in Mianyang City,Sichuan Province,has 3 floors above the ground and 1 floor underground,and adopts a multi-storey reinforced concrete frame structure.The construction site is located in the key earthquake monitoring and defense area.According to the requirements of the"Regulations on Seismic Management of Construction Projects",eight major types of buildings such as schools,kindergartens,and hospitals must adopt technologies such as seismic isolation and shock absorption to ensure their normal use in earthquake resistant environments.This project adopts energy dissipation and vibration reduction technology,and VFD viscous dampers are selected according to the project characteristics.The ETABS software structure is used for time history analysis under the seismic action of a seismic fortification intensity of 7 degrees(0.1g).Computational simulation analysis under rare earthquake action using PERFORM-3D software.The calculation results show that the damper fully dissipates energy under seismic fortification and rare earthquakes,has good seismic reduction effect,and its elastic-plastic interlayer displacement angle meets the specification requirements.The seismic and performance targets of the main structure and components have met expectations,with only a few components experiencing minor damage.The damper exerts good energy dissipation ability,further improving the reliability and safety of the main structure.
作者
张晔
朱正跃
ZHANG Ye;ZHU Zhengyue(Tongji Architectural Design(Group)Co.,Ltd.,Shanghai 200092,China)
出处
《建筑结构》
北大核心
2023年第S02期831-834,共4页
Building Structure
关键词
幼儿园
消能减震
地震重点监视防御区
性能目标
粘滞阻尼器
kindergarten
energy dissipation and shock absorption
key area for earthquake surveillance and protection
performance objectives
viscous damper
