Control System for Live Load and Live Load Effects on Bridges

桥梁活载和活载效应控制系统

• 批准号: 9730988
• 负责人: Andrzej Nowak
• 金额: $ 8.5万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-06-01 至 2001-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9730988&HistoricalAwards=false
• 关键词: Control; System; Live; Load; Effects

The objective of the research is to develop an integrated system for monitoring live load and verifying live load carrying capacity of highway bridges. Therefore, the proposed research will deal with the development of the control system for live load on bridges and the control system of live load carrying capacity. The anticipated major contributions will include: the improvement of field testing procedures using remote sensors and transmitters on-site processing of the data, calculation of critical truck loads, accumulated fatigue load spectra, maximum deflection, derivation of reliability-based criteria for acceptability limits, elements of active control with on-site response to critical overload as determined by comparison with the developed reliability-based criteria, integration of truck weigh-in-motion with diagnostic testing and proof load testing, derivations reliability-based criteria for establishing proof load level for bridges. The research will be based on the experience gained in an extensive field testing program and bridge reliability analysis at the University of Michigan.

研究的目的是开发一个用于监测活载和验证公路桥梁活载承载能力的集成系统。 因此，本研究将涉及桥梁活载控制系统和活载承载能力控制系统的开发。 预期的主要贡献将包括：使用远程传感器和发射器现场数据处理改进现场测试程序，计算关键卡车负载，累积疲劳负载谱，最大偏转，推导基于可靠性的可接受限度标准，通过与已开发的基于可靠性的标准进行比较来确定对临界过载的主动控制要素，将卡车动态称重与诊断测试和验证负载测试相结合，推导基于可靠性的标准来建立验证负载水平用于桥梁。 该研究将基于密歇根大学广泛的现场测试项目和桥梁可靠性分析所获得的经验。