Reliability Based Bridge Inspection

基于可靠性的桥梁检测

• 批准号: 9203276
• 负责人: Mehrdad Soltani
• 金额: $ 17.14万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-12-15 至 1997-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9203276&HistoricalAwards=false
• 关键词: Reliability; Based; Bridge; Inspection

Bridge management is concerned with the improvement of existing bridges through systematic inspection and maintenance. Inspection of bridges in the United States is normally performed at two-year intervals, subject to change if requested by state agencies. A bridge deterioration model obtained through statistical analysis of bridge inspection data as well as reliability evaluation of the bridge can be used as a basis for the selection of a more objective inspection interval. The statistical analysis will be applied to bridges in states with more diverse environmental and climatic conditions for a more complete evaluation of the current inspection practice. A methodology is presented for quantifying inspection intervals using reliability analysis and determining existing and future reliabilities of a bridge. The conceptual inspection strategy schedules bridge inspection based on the prediction of the bridge condition. A simple bridge case study is presented to show the effectiveness of such program. Certain assumptions and approximations that are made for this case study will be studied in detail and a comprehensive reliability based inspection strategy will be developed. The National Bridge Inventory lacks structural properties that are needed in the reliability analysis. Recommendations will be presented for the creation of a bridge database using existing Computer Aided Design and Drafting (CADD) technology.

桥梁管理涉及到现有桥梁的改善， 对桥梁进行系统的检查和维护。 美国的桥梁检查通常是 每两年一次，可应国家要求作出修改 社. 桥梁退化模型， 桥梁检测数据的统计分析以及 桥梁的可靠性评估可作为 选择更客观的检查间隔。 的 统计分析将应用于各州的桥梁， 更多样化的环境和气候条件， 对现行检查做法进行全面评价。 提出了量化检查间隔的方法 使用可靠性分析并确定现有和未来 桥的可靠性。 概念性检查战略 根据桥梁的预测安排桥梁检查 条件 一个简单的桥梁案例研究显示， 这种方案的有效性。 若干假设及 将研究为该案例研究所做的近似 详细和全面的可靠性为基础的检查 将制定战略。 国家桥梁清单缺乏结构特性， 在可靠性分析中需要。 建议将 提出了一个桥梁数据库的创建使用现有的 计算机辅助设计和绘图（CADD）技术。