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Abstract

This study aimed to mitigate the propensity for lateral overturning of single-column-pier curved girder bridge under the action of heavy cargo transportation vehicles, evaluate the influence of a vehicle ’s transverse traveling position on a bridge ’s anti-overturning stability, and propose feasible safety-enhancement measures. A (20 + 2 × 30 + 20) m prestressed-concrete continuous box-girder ramp bridge with single-column piers served as the engineering case. A three-dimensional grillage finite element model was developed in Midas Civil. The model simulated a heavy cargo transportation convoy —comprising a tractor and front and rear hydraulic modular trailers—transporting a prefabricated box girder weighing 99 t and 29.4 m in length at a constant speed of 5 km/h across the deck. Time-history analyses were carried out for three typical transverse positions (outer lane, centerline, and inner lane ) to obtain support reaction as well as stabilizing and destabilizing effects, thereby elucidating structural responses. The results reveal that, when the heavy cargo transportation vehicle traverses the single-column-pier curved girder bridge, the supports on both longitudinal sides of the single column piers are critical locations for anti-overturning verification. Although the outer-lane scenario proves to be the most unfavorable, the minimum lateral anti-overturning stability coefficient throughout the vehicle passage remains above 2.5, satisfying the safety requirements. Among the three scenarios, centerline travel imposes the least overturning effect on the structure. Consequently, centerline driving is recommended for heavy cargo transportation vehicles. This study provides a reference for drafting special heavy cargo transportation schemes and reinforcement designs for similar bridges.

Publication Date

10-29-2026

DOI

10.14048/j.issn.1671-2579.2026.05.018

First Page

174

Last Page

181

Submission Date

October 2026

Reference

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