Experimental and Analytical Seismic Studies of MRF's and MRF-CBF Dual Systems with Concrete Filled Tube Members

具有混凝土填充管构件的 MRF 和 MRF-CBF 双系统的实验和分析地震研究

• 批准号: 9905870
• 负责人: James Ricles
• 金额: $ 32.84万
• 依托单位: Lehigh University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-03-01 至 2004-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9905870&HistoricalAwards=false
• 关键词: Experimental; Analytical; Seismic; Studies; MRF

Composite construction for buildings provides an effective system for resisting non-seismic (e.g., gravity and wind) loads. Concrete filled steel tube (CFT) columns are one form of composite construction. CFT-related research studies to date under the U.S.-Japan Cooperative Research Program on Earthquake Engineering have investigated the performance of individual members and connections under seismic loading conditions. However, there currently is a lack of knowledge of the seismic performance of complete structural frames with CFT members and related connections.This project will focus on the seismic performance of CFT structural frame systems. The project will: (1) investigate the seismic performance of CFT column-wide flange beam MRF; (2) investigate the seismic performance of MRF-CBF dual frame systems with CFT columns and CFT braces; (3) evaluate analytical modeling and analysis procedures for CFT column-wide flange beam MRFs and MRF-CBF dual frame systems with CFT columns and CFT braces; and (4) review and improve design criteria and methodologies for structural frame systems with CFT members.The objectives of the project will be achieved through integrated analytical and experimental investigations. The analytical investigation will focus on nonlinear time history analysis of MRFs and MRF-CBF dual systems. Using the improved design criteria, three CFT test frames will be designed. Each test frame will be a 5/6 scale model of the lower three stories of a two-bay six-story frame designed for the theme structure of the U.S. Japan Cooperative Program. The three frames include: (1) and MRF with square CFT columns and wide flange beams; (2) an MRF-CBF dual system with square CFT columns and CFT unbonded braces; and (3) a MRF-CBF dual system with square CFT columns and CFT bonded braces. The experimental investigation will execute a series of pseudo-static tests on each test frame using a simulated seismic loading that consists of imposed lateral displacement histories at the first, second, and third floor levels. The project will acquire new knowledge of the seismic performance of structural systems with CFT members that cannot be obtained from studies of isolated members and connections, and will generate technical information needed by design professionals for the seismic resistant design of composite structural systems. This project is supported under initiative NSF94-154 "US-Japan-Cooperative Research in Composite and Hybrid Structures."

建筑物的复合构造提供了一种有效的系统，可抵抗非看病（例如重力和风力）负载。 混凝土填充的钢管（CFT）柱是复合结构的一种形式。 迄今为止，在美国 - 日本地震工程的合作研究计划下，与CFT相关的研究研究了地震加载条件下的个别成员和联系的表现。 但是，目前缺乏了解与CFT成员和相关连接的完整结构框架的地震性能。该项目将重点关注CFT结构框架系统的地震性能。 该项目将：（1）研究CFT圆柱环MRF的地震性能； （2）研究带有CFT柱和CFT括号的MRF-CBF双重框架系统的地震性能； （3）评估带有CFT柱和CFT括号的CFT圆柱法兰束MRF和MRF-CBF双框架系统的分析模型和分析程序； （4）审查和改善具有CFT成员的结构框架系统的设计标准和方法。项目的目标将通过综合的分析和实验研究来实现。 分析研究将重点介绍MRFS和MRF-CBF双重系统的非线性时间历史分析。 使用改进的设计标准，将设计三个CFT测试框架。 每个测试框架将是一个5/6的比例模型，该模型的下三层楼是一个为美国日本合作计划主题结构设计的两层式六层框架的框架。 这三个帧包括：（1）和MRF，带有方形CFT柱和宽法兰梁； （2）具有方形CFT柱和CFT无键牙的MRF-CBF双重系统； （3）具有方形CFT柱和CFT键合的MRF-CBF双系统。 实验研究将使用模拟的地震载荷在每个测试框架上执行一系列伪静态测试，该测试由在第一，第二和三楼水平上施加的侧向位移历史组成。 该项目将通过CFT成员获得有关结构系统的地震性能的新知识，而CFT成员无法从孤立成员和连接的研究中获得，并将生成设计专业人员所需的技术信息，以实现复合结构系统的地震抗性设计。该项目在NSF94-154的倡议下支持“复合和混合结构的美国 - 日本合作研究”。