SBIR PHASE I: Wireless Remote Evaluation of Bridge Abutmentsand Piers (WREBAP)

SBIR 第一阶段：桥台和桥墩的无线远程评估 (WREBAP)

• 批准号: 9560834
• 负责人: Kenneth Maser
• 金额: $ 7.49万
• 依托单位: INFRASENSE, Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-04-01 至 1996-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9560834&HistoricalAwards=false
• 关键词: SBIR; PHASE; Wireless; Remote; Evaluation

This Small Business Innovation Research Phase I project is to develop and demonstrate a low cost system for Wireless Remote Evaluation of Abutments and Piers (WREBAP). The WREBAP system addresses the most common cause of bridge failure: i.e., from floods, during which scour of bridge foundations causes failure of piers and abutments. Accurate and timely evaluation of these critical bridge abutment and pier conditions that can lead to such failures is a critical part of implementing a cost-effective, safety conscious bridge management program. The WREBAP system is based on long-term monitoring of pier and abutment movements caused by thermal and dead loading. These movements, and their relationship to measured distortions, are combined with parameter estimation models to determine the characteristics of unknown foundations and overall condition of the pier or abutment. The information is transmitted autonomously to the Department of Transportation bridge management database where it could be used for rehabilitation planning and budgeting, prioritization, and rapid and emergency response. By eliminating wires and using low cost, mass produced electronic components, the system will be low cost (target = $5000-$10000 per bridge). This price range makes the system affordable for implementation on a large number of structures, so that the population of bridges can be effectively monitored. The key technical issues to be faced in the development of the WREBAP system are: (1) the reliability and accuracy of pier and abutment evaluations using long term monitoring data; and (2) the ability of the proposed system to provide data of adequate quality. The Phase I program will address these two issues by (1) conducting simulation pier and abutment evaluations using simple models and synthesized data; and (2) designing and demonstrating field data collection using an experimental prototype system mounted to an in-service bridge. The proposed system, when fully developed, will be applicable to all bridges owned by State and Local departments of transportation, railroad companies, and toll and tunnel authorities.

这个小企业创新研究第一阶段项目是开发和展示一个低成本的无线远程评估系统的桥台和桥墩（WREBAP）。 WREBAP系统解决了桥故障的最常见原因：即，在洪水期间，桥梁基础的冲刷导致桥墩和桥台的破坏。 准确及时地评估这些可能导致此类故障的关键桥台和桥墩条件是实施具有成本效益的安全意识桥梁管理计划的关键部分。 WREBAP系统是基于长期监测桥墩和桥台移动所造成的热荷载和恒载。 这些运动及其与测量变形的关系与参数估计模型相结合，以确定未知基础的特性和桥墩或桥台的整体状况。 这些信息自动传输到交通部桥梁管理数据库，可用于修复规划和预算编制、优先排序以及快速和紧急响应。 通过消除电线和使用低成本，大规模生产的电子元件，该系统将是低成本的（目标=每桥5000 - 10000美元）。 这个价格范围使得该系统可以在大量结构上实施，从而可以有效地监测桥梁的数量。 在开发WREBAP系统时要面对的关键技术问题是：（1）使用长期监测数据进行桥墩和桥台评估的可靠性和准确性;以及（2）拟议系统提供足够质量数据的能力。 第一阶段计划将通过以下方式解决这两个问题：（1）使用简单模型和综合数据进行模拟桥墩和桥台评估;（2）使用安装在服役桥梁上的实验原型系统设计和演示现场数据收集。 拟议的系统，当充分发展，将适用于所有桥梁拥有的国家和地方交通部门，铁路公司，收费和隧道当局。