目前对学校建筑采用黏滞阻尼器进行减震设计的研究常关注教学楼、宿舍楼等主体结构,而忽略了对校园整体空间组织起着重要作用的廊空间。为了研究黏滞阻尼器在学校廊空间的应用,以上海某小学教学楼间的连廊为例进行减震设计。首先,对结构进行多遇地震分析,结果满足规范要求。其次,在设防地震下进行弹性时程分析,对比是否包含基础层、阻尼器布置在内框架或外框架、阻尼器布置数量变化和阻尼器布置楼层变化时的减震效果,并确定减震方案。最后,在罕遇地震下进行弹塑性时程分析,计算结构损伤、耗能和位移角。研究结果表明,黏滞阻尼器可以在地震作用下提供一定的耗能,是学校廊空间的一种有效减震手段。
Abstract
In the current research on seismic reduction design of school buildings using viscous fluid dampers, attention is often paid to the main structures such as teaching buildings and dormitory buildings, while neglecting the corridor space that plays an important role in the overall spatial organization of the campus. In order to study the application of viscous fluid damper in school corridor space, this paper takes the corridor space between teaching buildings in a primary school in Shanghai as an example for seismic reduction design. Firstly, conduct frequent earthquake analysis on the structure, and the results meet the requirements of the specifications. Secondly, conduct elastic time history analysis under fortification earthquakes and compare the seismic reduction effects when including the foundation layer or not, the arrangement of dampers in the inner or outer frame, the number of dampers changed, the floor of dampers changed, and determining the seismic reduction plan. Finally, conduct elastic-plastic time history analysis under rare earthquakes to calculate structural damage, energy dissipation, and drift ratio. The research results indicate that viscous fluid dampers can provide certain energy dissipation under earthquake action and are an effective seismic reduction method for school corridor spaces.
关键词
黏滞阻尼器 /
廊空间 /
减震 /
耗能 /
时程分析
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Key words
viscous fluid damper /
corridor space /
seismic reduction /
energy dissipation /
time history analysis
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