Robust Performance-based Design of Concentrically Braced Steel Frame Buildings

翻译后摘要：钢支撑框架结构，特别是同心支撑框架，并迅速在美国各地流行。考虑到（a）传统抗弯框架结构的成本和复杂性，（B）框架结构中与大的横向位移相关的损坏和破坏，以及（c）许多地区的地震设计力的大幅增加，工程师们越来越依赖于中心支撑框架的固有强度和刚度。然而，传统的中心支撑框架的抗震性能受到质疑。该项目系统地建立在现有的实验，理论和分析研究的一个重要的，但目前脱节的机构。通过整合这些知识，补充有关现代和创新支撑框架系统行为的重要新数据，并进行数值模拟的重点计划，对这些系统的复杂非线性行为的更全面的理解被开发并用于性能-的地震工程评估框架，以评估可能的创新战略，以提高抗震性能，并制定鲁棒设计和分析指南。

Abstract: Steel braced frame structures, especially concentrically braced frames, and are rapidly gaining popularity across the US. Concerns about (a) the cost and complexity of traditional moment frame construction, (b) the damage and disruption associated with large lateral displacements in frame structures, and (c) the substantial increases in seismic design forces in many regions are leading engineers to rely increasingly on the inherent strength and stiffness of concentrically braced frames. However, the seismic behavior of conventional concentrically braced frames has been questioned. This project systematically builds upon a significant, but currently disjoint body of existing experimental, theoretical and analytical research. By integrating this knowledge, supplementing it with important new data regarding the behavior of modern and innovative braced frame systems and undertaking a focused program of numerical simulations, a more comprehensive understanding of the complex nonlinear behavior of these systems is developed and used within a performance-based earthquake engineering evaluation framework to evaluate possible innovative strategies for improving seismic performance and to devise robust guidelines for design and analysis.