Building seismic ceiling fragility using spectral acceleration
Building seismic ceiling fragility using spectral acceleration
复制标题
使用谱加速构建抗震天花板脆弱性
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
S. Pampanin
中科院分区：
文献类型：
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作者：
J. Singh;G. MacRae;R. Dhakal;S. Pampanin
除了生命安全风险外，地震对吊顶的破坏还会导致严重的停机和经济损失。为了了解这种风险并制定缓解战略，最近由坎特伯雷大学FRST自然灾害平台资助了一个关于非结构破坏的小型项目。该项目着眼于在地震事件中对天花板的要求。感兴趣的工程需求参数是总峰值楼板加速度。研究了两种不同的天花板类型；“周长固定”和“浮动式”吊顶。首先，每种天花板类型都明确地在一个单层的单凸框架中建立了自己的质量模型，以评估相对于上面天花板的一些参数的响应变化。其次，通过对一组20个地面运动记录进行时程分析，获得了10层红皮书建筑的中位峰值总楼层加速度。再次，将该信息与基于楼板加速度的顶棚系统易碎性信息相结合，得到基于地震动参数的系统易碎性信息。
Seismic damage to ceilings can cause significant downtime and economic loss in addition to life safety risk. In order to understand this risk and develop mitigation strategies a small project on non-structural damage was recently funded by the FRST Natural Hazards Platform at the University of Canterbury. This project looks at the demands imposed on ceilings in a seismic event. The engineering demand parameter of interest is the total peak floor acceleration. Two different ceiling types are investigated; the “perimeter fixed” and the “floating type” ceiling. Firstly each ceiling type is modelled explicitly with its own mass in a single storey one bay frame to evaluate the changes in response relative to the ceiling above for a number of parameters. Secondly, median peak total floor accelerations for the 10 storey Redbook building are obtained by conducting time history analysis with a suite of 20 ground motion records. Thirdly, this information is combined with ceiling system fragility information based on floor acceleration to obtain the system fragility information based on ground motion parameters.