CAREER: Advancing the Performance-Based Seismic Design of Buildings

这项工作将开发和验证基于性能的抗震设计和多层建筑修复的简单技术。设计技术将利用能力谱方法的一种变体，称为屈服点谱。用于确定强度和刚度组合以实现任意性能目标的简单图形技术将得到验证。将研究在设计中处理更高模式的各种策略，以确定使用单模式类比能够很好地预测响应幅度的那些策略。将应用先进的多变量统计技术来识别从非线性动力分析获得的结果中的振型。将评估改进的估计峰值层间漂移的技术。将开发一个实验室模块，供全国22所通过NSF CCLI计划获取台式振动台的本科生机构使用。学生小组将设计、建造、安装和测试小型多层框架。将对获得的数据进行后处理，以确定基本的反应特征。将对系统的性能以及设计方法的实用性进行评估。

This work will develop and validate simple techniques for the performance-based seismic design and rehabilitation of multistory buildings. Design techniques will utilize a variant of the Capacity Spectrum Method known as Yield Point Spectra. Simple graphical techniques for determining combinations of strength and stiffness to achieve arbitrary performance objectives will be validated. Various strategies for addressing higher modes in design will be investigated to determine those for which response amplitudes are predicted well using a single mode analogy. Advanced multivariate statistical techniques will be applied to identify mode shapes in the results obtained from nonlinear dynamic analyses. Improved techniques for estimating peak interstory drifts will be evaluated.A laboratory module will be developed for use by the 22 undergraduate institutions nationwide that are acquiring benchtop shaking tables through the NSF CCLI program. Groups of students will design, build, instrument, and test small multistory frames. Data acquired will be post-processed to identify fundamental response characteristics. The performance of the system as well as the utility of the design methodology will be assessed.