S/C: Implementing Active Control Under the Ballroom Floor ofthe Cincinnati Convention Center

S/C：在辛辛那提会议中心宴会厅地板下实施主动控制

• 批准号: 9402392
• 负责人: Ahmet Aktan
• 金额: --
• 依托单位: University of Cincinnati Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-10-01 至 1995-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9402392&HistoricalAwards=false
• 关键词: Implementing; Active; Control; Under; Ballroom

9319878 Aktan This is a proposal for research focused on deterioration mechanics of aged steel truss bridges, to develop a rational approach for quantitative assessment of the condition of these bridges. The scope includes the following phases. (1) An in-depth study of the properties of chemically and mechanically aged and deteriorated materials. This phase will include a study of how the fundamental characteristics of materials (including the fatigue properties) change with age and are affected by deterioration. (2) Laboratory studies of six full-length built-up members salvaged from the two destroyed highway bridges. (3) Development of a practical procedure for estimating the actual type and extent of deterioration. This procedure will enable predicting critical responses of bridge members and of complete bridges; (5) Calibration of the proposed analytical procedure by simulating the experimental responses of the two highway bridges tested to failure. This calibration will be done through nonlinear system- identification studies.

9319878 Aktan 这是一项重点研究老化钢桁架桥劣化力学的提案，旨在开发一种定量评估这些桥梁状况的合理方法。 范围包括以下阶段。 (1)深入研究化学和机械老化和劣化材料的性能。 此阶段将包括研究材料的基本特性（包括疲劳特性）如何随老化而变化以及如何受到劣化的影响。 (2) 对从两座被摧毁的公路桥梁中抢救出来的六个全长组合构件进行了实验室研究。 (3) 制定实用程序来估计实际恶化类型和程度。 该程序将能够预测桥梁构件和完整桥梁的关键响应； (5) 通过模拟两座公路桥梁失效测试的实验响应来校准所提出的分析程序。 该校准将通过非线性系统识别研究来完成。