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Title |
Feasibility Analysis of the Bridge Analytical Model Calibration with the Response Correction Factor Obtained from the Pseudo-Static Load Test
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Authors |
한만석(Man-Seok Han) ; 신수봉(Soo-Bong Shin) |
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DOI |
https://doi.org/10.11112/jksmi.2021.25.6.50 |
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Abstract |
Currently, the response correction factor is calculated by comparing the response measured by the load test on a bridge with the response analyzed in the initial analytical model. Then the load rating and the load carrying capacity are evaluated. However, the response correction factor gives a value that fluctuates depending on the measurement location and load condition. In particular, when the initial analytical model is not suitable for representing the behavior of a bridge, the range of variation is large and the analysis response by the calibrated model may give a result that is different from the measured response. In this study, a pseudo-static load test was applied to obtain static response with dynamic components removed under various load conditions of a vehicle moving at a low speed. Static response was measured on two similar PSC-I girder bridges, and the response correction factors for displacement and strain were calculated for each of the two bridges. When the initial analysis model was not properly set up, it is verified that the response of the analytical model corrected by the average response correction factor does not fall within the margin of error with the measured response.
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