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种公路桥梁活载监测和活载承载能力验证的集成系统。因此，本文的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发展。预期的主要贡献将包括：改进现场测试程序，使用远程传感器和变送器对现场数据进行处理，计算临界卡车载荷，累积疲劳载荷谱，最大挠度，推导基于可靠性的可接受极限标准，通过与已开发的基于可靠性的标准进行比较确定的具有临界过载现场响应的主动控制要素；汽车运动称重与诊断试验和证明载荷试验的集成，推导了建立桥梁证明载荷水平的基于可靠性的标准。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。