Evaluation and calibration of pedestrian bridge design standards for vibration serviceability of lightweight bridges. Dey, P., Narasimhan, S., & Walbridge, S. In volume 2019-June, pages Design Engineering Division and Computers and Information in Engineering Division - , Laval, QC, Canada, 2019. abstract bibtex Rapid advancements in material technology have paved the way for lightweight yet highly durable materials such as aluminum, providing fascinating opportunities to build lightweight pedestrian bridges. This has resulted in lively bridges, which often suffer excessive vibrations leading to serviceability problems under pedestrian-induced loads. Various standards for serviceability design have been developed, primarily based on low-frequency bridges. These standards have overlooked the altered mass-stiffness relationship for lightweight structures, which often induce high-frequency responses. Another central issue in their design is proper consideration of the uncertainties in the pedestrian loading. This study underscores the deficiencies in current standards by comparing predictions with measurements from aluminum pedestrian bridges. Experimental results from two full-scale bridges show significant differences in the predictions by the design models as compared to the measurements. Accordingly, modifications have been recommended to better align predictions with experimental observations, which also harmonize these standards amongst each other. In addition, a reliability-based evaluation is carried out on code-compliant bridges by incorporating the uncertainties associated with the various parameters in the design process. Based on the evaluation results, the design equations are calibrated for higher reliability indices and partial factors for the calibrated design equation are estimated. For economic designs, user comfort limits based on the frequency of occurrence of the traffic event and the class of pedestrian bridge are adopted during the calibration process. The calibrated design standards ensure acceptable performance during both design and non-frequent heavy traffic loading events, while at the same time yielding economic designs.
� 2019 Canadian Society for Civil Engineering. All rights reserved.
@inproceedings{20201008263869 ,
language = {English},
copyright = {Compilation and indexing terms, Copyright 2025 Elsevier Inc.},
copyright = {Compendex},
title = {Evaluation and calibration of pedestrian bridge design standards for vibration serviceability of lightweight bridges},
journal = {Proceedings, Annual Conference - Canadian Society for Civil Engineering},
author = {Dey, P. and Narasimhan, S. and Walbridge, S.},
volume = {2019-June},
year = {2019},
pages = {Design Engineering Division and Computers and Information in Engineering Division - },
address = {Laval, QC, Canada},
abstract = {<div data-language="eng" data-ev-field="abstract">Rapid advancements in material technology have paved the way for lightweight yet highly durable materials such as aluminum, providing fascinating opportunities to build lightweight pedestrian bridges. This has resulted in lively bridges, which often suffer excessive vibrations leading to serviceability problems under pedestrian-induced loads. Various standards for serviceability design have been developed, primarily based on low-frequency bridges. These standards have overlooked the altered mass-stiffness relationship for lightweight structures, which often induce high-frequency responses. Another central issue in their design is proper consideration of the uncertainties in the pedestrian loading. This study underscores the deficiencies in current standards by comparing predictions with measurements from aluminum pedestrian bridges. Experimental results from two full-scale bridges show significant differences in the predictions by the design models as compared to the measurements. Accordingly, modifications have been recommended to better align predictions with experimental observations, which also harmonize these standards amongst each other. In addition, a reliability-based evaluation is carried out on code-compliant bridges by incorporating the uncertainties associated with the various parameters in the design process. Based on the evaluation results, the design equations are calibrated for higher reliability indices and partial factors for the calibrated design equation are estimated. For economic designs, user comfort limits based on the frequency of occurrence of the traffic event and the class of pedestrian bridge are adopted during the calibration process. The calibrated design standards ensure acceptable performance during both design and non-frequent heavy traffic loading events, while at the same time yielding economic designs.<br/></div> � 2019 Canadian Society for Civil Engineering. All rights reserved.},
key = {Footbridges},
%keywords = {Aluminum;Calibration;Design;Forecasting;Frequency response;},
%note = {Bridge design;Design equation;Design standard;Durable materials;Economic design;Materials technology;Serviceability designs;Serviceability problems;Uncertainty;Vibration serviceability;},
}
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All rights reserved.","key":"20201008263869","bibtex":"@inproceedings{20201008263869 ,\nlanguage = {English},\ncopyright = {Compilation and indexing terms, Copyright 2025 Elsevier Inc.},\ncopyright = {Compendex},\ntitle = {Evaluation and calibration of pedestrian bridge design standards for vibration serviceability of lightweight bridges},\njournal = {Proceedings, Annual Conference - Canadian Society for Civil Engineering},\nauthor = {Dey, P. and Narasimhan, S. and Walbridge, S.},\nvolume = {2019-June},\nyear = {2019},\npages = {Design Engineering Division and Computers and Information in Engineering Division - },\naddress = {Laval, QC, Canada},\nabstract = {<div data-language=\"eng\" data-ev-field=\"abstract\">Rapid advancements in material technology have paved the way for lightweight yet highly durable materials such as aluminum, providing fascinating opportunities to build lightweight pedestrian bridges. 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In addition, a reliability-based evaluation is carried out on code-compliant bridges by incorporating the uncertainties associated with the various parameters in the design process. Based on the evaluation results, the design equations are calibrated for higher reliability indices and partial factors for the calibrated design equation are estimated. For economic designs, user comfort limits based on the frequency of occurrence of the traffic event and the class of pedestrian bridge are adopted during the calibration process. The calibrated design standards ensure acceptable performance during both design and non-frequent heavy traffic loading events, while at the same time yielding economic designs.<br/></div> � 2019 Canadian Society for Civil Engineering. 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