Prestress Force Identification for Externally Prestressed Concrete Beam Based on Frequency Equation and Measured Frequencies

<table>Analysis model of the <svg height="11.4625" id="M30" style="vertical-align:-0.13794pt" version="1.1" viewbox="0 0 4.7624998 11.4625" width="4.7624998" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg>th span of the beam.</table>

Mathematical Problems in Engineering

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Figure 2

Figure 2: Prestress Force Identification for Externally Prestressed Concrete Beam Based on Frequency Equation and Measured Frequencies 