This study investigates the vibration screening efficiency of geofoam-infilled (GB) and open trench (OB) wave barriers. Field-scale vibration tests are conducted to evaluate the performance of different barriers under active and passive screening conditions. A modular panel-based system is adopted for the GB to facilitate easy installation, uninstallation, and reinstallation. The impact of input frequency, source-barrier distance, and measurement direction on the performance of GB and OB is thoroughly examined. The results indicate that both barriers perform satisfactorily under different screening conditions, with superior effectiveness observed under active screening. For active screening, the performance of barriers improves with decreasing source-barrier distance. The screening efficiency of GB and OB is higher along the centerline than along the angular line. The performance of OB and GB improves with increasing input frequency for both active and passive screening techniques, irrespective of the source-barrier distance. Additionally, simplified design expressions are developed to predict the performance of GB under active and passive screening conditions. The predicted outcomes of the proposed expressions compare well with the findings reported in the literature.
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