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Abstract

Based on massive customized transportation data from three provinces and bridge information from nine expressways, this paper selected four typical loading models of vehicles for customized transportation, and built finite element models of small-box girder bridges with different structural forms to support the evaluation of vehicles for customized transportation. By comparing the load effect of the designed vehicle, it analyzed and summarized the response characteristics of small-box girder bridges under four typical loading models. The results show that the load effect ratio is positively correlated with the single span and negatively correlated with the single span number. However, when the span number of a small-box girder bridge exceeds 3, the load effect ratio remains stable. The correlation level between the number of main beam pieces, the spacing between main beams, and the load effect ratio is low. The small-box girder bridge with the minimum main beam pieces and maximum spacing between main beams controls the passage evaluation results of the vehicles for customized transportation. Based on the response characteristics and the load effect comparison method, a selection principle for controlled small-box girder bridges and a rapid evaluation method of route levels for the passage safety of vehicles for customized transportation were proposed and applied to practical projects.

Publication Date

11-8-2022

DOI

10.14048/j.issn.1671-2579.2022.05.024

First Page

132

Last Page

137

Submission Date

April 2025

Reference

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