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Review of HL-93 bridge traffic load model using an extensive WIM database

Leahy, Cathal, OBrien, Eugene J., Enright, Bernard and Hajializadeh, Donya (2014) Review of HL-93 bridge traffic load model using an extensive WIM database Journal of Bridge Engineering, 20 (10), 04014115.

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HL-93, the current bridge traffic load model used in the United States is examined here. Weigh-in-motion (WIM) data from 17 sites in 16 states containing 74 million truck records are used to assess the level of consistency in the characteristic load effects (LEs) implied by the HL-93 model. The LEs of positive and negative bending moments and shear force are considered on single- and two-lane same-direction slab and girder bridges with a range of spans. It is found that the ratio of WIM-implied LE to HL-93 LE varies considerably from one LE to another. An alternative model is proposed that achieves improvements in consistency in this ratio for the LEs examined, especially for the single-lane case. The proposed model consists of a uniformly distributed load whose intensity varies with bridge length. © 2014 American Society of Civil Engineers.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
Leahy, Cathal
OBrien, Eugene J.
Enright, Bernard
Date : 7 November 2014
DOI : 10.1061/(ASCE)BE.1943-5592.0000729
Copyright Disclaimer : © 2014 American Society of Civil Engineers.
Uncontrolled Keywords : Bridges, Highway bridges, Loads, Traffic, Trucks, Bridges, Highway bridges, Loading, Telecommunication traffic, Trucks, Weigh-in-motion (WIM), Bridge length, Distributed loads, Girder bridges, Level of consistencies, Load effects, Negative bending, Traffic load model, Weigh-in-motion datum, Loads (forces)
Depositing User : Diane Maxfield
Date Deposited : 25 Mar 2019 12:00
Last Modified : 25 Mar 2019 12:00

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