Collaborative Research: Propagation of Uncertainties in Nonlinear Frame Analysis of RC Buildings for Performance-Based Seismic Engineering

标题：协作研究：基于性能的地震工程的 RC 建筑非线性框架分析中的不确定性传播摘要：这是科罗拉多大学博尔德分校和加州大学洛杉矶分校的研究团队之间的一个协作研究项目，要求单独授予奖项。本研究的目的是开发和实施通用方法，并在一组基准 RC 框架上对其进行测试。 获奖项目将把最先进的非线性框架分析技术与最先进的灵敏度和可靠性分析方法相结合，开发一种通用方法，用于评估基于性能的工程钢筋混凝土建筑非线性动态分析中不确定性传播的影响。研究中将考虑以下固有和认知不确定性的来源： (a) 材料特性的内在变异性/随机性； (b) “全球”地震变量（地震震级 M、震源距 R 和当地场地条件 S）的固有和认知不确定性； (c) 地震荷载历史的内在变异性/随机性； (d) 与非线性 RC 框架模型和随机地震激励模型相关的建模不确定性。

Title: Collaborative Research: Propagation of Uncertainties in Nonlinear Frame Analysis of RCBuildings for Performance-Based Seismic EngineeringSummary: This is a collaborative research project, with separate awards requested, between research teams at the University of Colorado at Boulder and the University of California at Los Angeles. The purpose of this research is to develop and implement the general methodology and to test it on a set of benchmark RC frames. The awarded project will merge state-of-the-art techniques in nonlinear frame analysis with state-of-the-art methods in sensitivity and reliability analysis to develop a general methodology for assessing the effects of propagation of uncertainties in nonlinear dynamic analyses of reinforced concrete buildings for performance-based engineering. The following sources of inherent and epistemic uncertainties will be considered in the study: (a) intrinsic variabilities/randomness in the material properties; (b) inherent and epistemic uncertainties in the "global" seismological variables (earthquake magnitude M, site-to-source distance R, and local site condition S); (c) intrinsic variabilities/randomness in the earthquake loading history; and (d) modeling uncertainties associated with the nonlinear RC frame models and the stochastic earthquake excitation model.