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    Structural health monitoring of Klehini River bridge

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    Author
    Xiao, Feng
    Keyword
    Bridges
    Inspection
    Alaska
    Klehini River
    Structural health monitoring
    Bridge failures
    Prevention
    Strains and stresses
    Measurement
    Klehini River Bridge (Alaska)
    Metadata
    Show full item record
    URI
    http://hdl.handle.net/11122/8428
    Abstract
    The objective of the research is to improve the safety of bridge structures in the state of Alaska through implementation of innovative structural health monitoring (SHM) technologies. The idea is to evaluate structural integrity and serviceability, and to provide reliable information for changing structural response, etc. of monitored bridges. Based on the finite element model's moving load analysis, modal analysis results and field inspection, this study was used to establish a bridge SHM system for a particular bridge including a preferred sensor layout, system integrator and instrumentation suitable for Alaska's remote locations with harsh weather. A variety of sensors were proposed to measure and monitor structural and environmental conditions to assist in the evaluation of the performance of the Klehini River Bridge. This system is able to provide more reliable information on the real structural health condition. It can be used to improve safe performance of this bridge. As a new safety and management tool, this SHM system will complement traditional bridge inspection methods. Implementation of an effective monitoring system will likely result in a reduction in inspection manpower, early detection of deterioration/damage, development of optimum inspection cycle and repair schedules before deterioration/damage grows to a condition where major repairs are required.
    Description
    Thesis (M.S.) University of Alaska Fairbanks, 2012
    Table of Contents
    1. Introduction -- 1.1. Problem statement -- 1.2. Bridge description -- 1.3. Structural health monitoring technology -- 2. Research approaches -- 2.1. Structural characterization -- 2.2 Measurement needs -- 2.3. Types of testing and monitoring -- 2.4. Selection of sensors and systems -- 3. Development of the structural health monitoring system -- 3.1. Introduction -- 3.2. Moving load analysis -- 3.2. Modal analysis -- 3.3. Local finite element analysis -- 3.4. Crack gage -- 3.5. Preliminary sensor layout -- 3.6. Types of monitoring -- 3.7. Equipment -- 3.5. Power supply and internet for remote sensing -- 3.6. Installation of SHM and integration of the system -- 4. Conclusions and future work -- References -- Appendix.
    Date
    2012-08
    Type
    Thesis
    Collections
    Engineering

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