A practice-oriented method for estimating elastic floor response spectra
A practice-oriented method for estimating elastic floor response spectra
复制标题
一种面向实践的弹性地板响应谱估计方法
DOI：
10.5459/bnzsee.53.3.116-136
复制
发表时间：
2020
影响因子：
1.7
通讯作者：
R. Chandramohan
中科院分区：
文献类型：
--
作者：
Kieran Haymes;T. Sullivan;R. Chandramohan
本文提出了一种面向工程实际的弹性楼板加速度反应谱的模态叠加法。该方法建立在文献中以前的贡献，明确考虑楼层位移反应谱和帐户的模态特性的不确定性提出了具体的建议。该方法的目的是提供可靠的预测，改善现有的代码方法，但保持简单性，使在实际设计中采用。这项工作的动机是最近的地震事件已经说明了显着的成本，可以发生以下损坏的建筑物内的次要和非结构性部件，即使在结构系统已经表现良好。这促使人们越来越关注非结构构件的抗震性能，并对实践中使用的设计楼层加速度反应谱的准确性提出了质疑。通过比较地板加速度反应谱预测所提出的方法与那些记录在新西兰的仪器建筑物，它表明，所提出的方法表现良好，特别是如果一个很好的估计的建筑物的基本周期的振动是可用的。
A practice-oriented modal superposition method for setting elastic floor acceleration response spectra is proposed in this paper. The approach builds on previous contributions in the literature, making specific recommendations to explicitly consider floor displacement response spectra and accounts for uncertainty in modal characteristics. The method aims to provide reliable predictions which improve on existing code methods but maintain simplicity to enable adoption in practical design. This work is motivated by recent seismic events which have illustrated the significant costs that can be incurred following damage to secondary and nonstructural components within buildings, even where the structural system has performed well. This has prompted increased attention to the seismic performance of nonstructural components with questions being raised about the accuracy of design floor acceleration response spectra used in practice. By comparing floor acceleration response spectra predicted by the proposed method with those recorded from instrumented buildings in New Zealand, it is shown that the proposed approach performs well, particularly if a good estimate of the building’s fundamental period of vibration is available.