Performance Assessment and Performance-Based Design Metholodogy for Composite Construction with Application to Concrete-Filled Steel Tube Structural Systems

复合结构性能评估和基于性能的设计方法在钢管混凝土结构系统中的应用

• 批准号: 0084848
• 负责人: Jerome Hajjar
• 金额: $ 20.01万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-15 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0084848&HistoricalAwards=false
• 关键词: Performance; Assessment; Based; Design; Metholodogy

In recent years, performance-based seismic design methodologies have been developed with increasing success for steel, concrete, masonry, and timber structures. However, there are few performance-based design guidelines in the U.S. for composite steel/concrete structures. This proposal outlines research on establishing a methodology for performance-based design of composite structures. To focus the work, the research will apply specifically to frames incorporating concrete-filled tube (CFT) beam-columns. In performance-based design, critical force and deformation design parameters are used to quantify building performance for an anticipated seismic hazard level. The primary objectives of this research are: 1) assess seismic demand in composite CFT frames through a set of parametric frame analyses; 2) consolidate worldwide test results in CFT beam-columns, connections, and frames, and use these results to assess capacity of key components of CFT frames; 3) use the quantified assessments of demand and capacity for all design parameters to formulate a reliability-based performance-based design methodology for composite structures, specifically CFT frames. These frame analyses and the performance-based design methodology together will yield valuable information required for understanding the seismic demands of composite CFT frames, for providing a first step towards comprehensively improving composite CFT design specifications, and for accelerating the trend to use CFTs in common frame structures.

近年来，基于性能的抗震设计方法在钢结构、混凝土结构、砖石结构和木结构方面取得了越来越大的成功。然而，在美国，对于钢/混凝土组合结构，几乎没有基于性能的设计指南。本提案概述了建立基于性能的复合材料结构设计方法的研究。为了集中工作，该研究将专门应用于包含混凝土填充管（CFT）梁柱的框架。在基于性能的设计中，临界力和变形设计参数用于量化预期地震危险级别的建筑性能。本研究的主要目标是：1)通过一组参数框架分析来评估复合CFT框架的抗震需求；2)整合CFT梁柱、连接件和框架的全球测试结果，并利用这些结果评估CFT框架关键部件的能力；3)利用对所有设计参数的需求和能力的量化评估，制定基于可靠性的复合材料结构，特别是CFT框架的基于性能的设计方法。这些框架分析和基于性能的设计方法将为理解复合CFT框架的抗震需求提供有价值的信息，为全面改进复合CFT设计规范提供了第一步，并加速了在普通框架结构中使用CFT的趋势。