Use of weigh-in-motion (WIM) data for site-specific LRFR bridge rating

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Title: Use of weigh-in-motion (WIM) data for site-specific LRFR bridge rating
Authors: Zhao, Hua
Uddin, Nasim
Waldron, Christopher J.
O'Brien, Eugene J.
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Date: 4-Jun-2012
Abstract: In this paper, truck weigh-in-motion (WIM) data are used to develop live load factors for use on Alabama state-owned bridges. The factors are calibrated using the same statistical methods that were used in the original development of AASHTO’s Load and Resistance Factor Rating (LRFR) Manual. This paper describes the jurisdictional and enforcement characteristics in the state, the WIM data filtering, sorting, and quality control, as well as the calibration process. Large WIM data sets from five sites were used in the calibration and included different truck volumes, seasonal and directional variations, and WIM data collection windows. Certain MATLAB programs were developed in the live load factor calibration process. The resulting state-specific live load factors are smaller than those of LRFR manual and are recommended to the Alabama Department of Transportation (ALDOT) in rating their bridges more efficiently
Type of material: Conference Publication
Keywords: Live load factors;Bridge rating;Weight-in-motion;LRFR
Language: en
Status of Item: Not peer reviewed
Is part of: B. Jacob, A.-M.McDonnell, F. Schmidt, W. Gunagin (eds.). Use of weigh-in-motion (WIM) data for site-specific LRFR bridge rating
Conference Details: 6th International Conference on Weigh-in-Motion, ICWIM6, Dallas, 4-7 June, 2012
Appears in Collections:Civil Engineering Research Collection

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