SBIR Phase I: Portable Rapid Bridge Safety Inspection System for Earthquake and Other Natural Caused Damages (PORBSIS)

SBIR 第一阶段：针对地震和其他自然造成的损害的便携式快速桥梁安全检查系统 (PORBSIS)

• 批准号: 9860117
• 负责人: Theodore Wu
• 金额: $ 9.92万
• 依托单位: Informetric Tech Incorporated
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-01-01 至 1999-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9860117&HistoricalAwards=false
• 关键词: SBIR; Phase; Portable; Rapid; Bridge

9860117 This Small Business Innovation Research Phase I project is to investigate, develop and validate Portable high tech sensors for use in a post earthquake Rapid Bridge Safety Inspection System (PORBSIS). The present practice of visual safety inspection of bridge and large structure is both subjective and unreliable. Instrument methods, though more reliable, are plagued by the lack of accurate and fast data processing method in the case of using vibration characteristic, and the lack of adequate view field in the case of other visual equivalent. This project is addressed to a rapid inspection method for the structures under a transient live loading. The novelties of this investigation are the use of the newly developed Hilbert Huang Transform (Huang, et al., 1998) and the basic Nondestructive Instrument Bridge Safety Inspection System (NIBSIS, Huang, 1998). The advantage of the transient load is to have the test load visit every point of the structure. The NIBSIS, designed to analyze nonlinear and non-stationary time series, will enable the severity and location of the defects to be identified. Furthermore, this method requires short inspection time, and small number of sensors. Thus it offers a rapid inspection for bridge after a destructive earthquake. To maintain the effective and safe use of civil lifeline infrastructure, a rapid inspection of bridge after earthquake and natural disasters is critical. This portable rapid inspection method offers a unique alternative for fast decision making; therefore, it would be very marketable.

9860117 这个小企业创新研究第一阶段项目是调查，开发和验证便携式高科技传感器，用于地震后快速桥梁安全检查系统（PORBSIS）。 目前对桥梁和大型结构物进行目视安全检测的做法既主观又不可靠。 仪器法虽然可靠性较高，但在利用振动特性的情况下缺乏准确、快速的数据处理方法，在其他视觉等效的情况下又缺乏足够的视场。 本课题研究的是一种瞬态活载作用下结构的快速检测方法。 这项研究的新颖之处是使用新开发的希尔伯特黄变换（Huang等人，1998）和基本的无损仪器桥梁安全检测系统（NIBSIS，Huang，1998）。 瞬态载荷的优点是使试验载荷访问结构的每一点。 NIBSIS旨在分析非线性和非平稳时间序列，将能够识别缺陷的严重性和位置。 此外，该方法需要短的检测时间和少量的传感器。 从而为桥梁在破坏性地震后的快速检测提供了依据。 为了保持民用生命线基础设施的有效和安全使用，在地震和自然灾害后对桥梁进行快速检测至关重要。 这种便携式快速检测方法为快速决策提供了一种独特的选择;因此，它将非常畅销。