CAREER: Advancing the Performance-Based Seismic Design of Buildings

这项工作将开发和验证简单的技术，以性能为基础的抗震设计和多层建筑物的修复。设计技术将利用称为屈服点谱的能力谱方法的变体。简单的图形技术，确定组合的强度和刚度，以实现任意性能目标将得到验证。将研究设计中用于解决更高模式的各种策略，以确定使用单一模式类比预测响应幅度的策略。先进的多元统计技术将被应用于识别从非线性动态分析获得的结果中的模式形状。将评估用于估计峰值层间位移的改进技术。将开发一个实验室模块，供全国22所通过NSF CCLI计划获得台式振动台的本科院校使用。学生小组将设计，建造，仪器和测试小型多层框架。所获得的数据将进行后处理，以确定基本的响应特性。将评估系统的性能以及设计方法的实用性。

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.