Original scientific paper

https://doi.org/10.17559/TV-20250420002612

Study on Impact Effect of Curved Steel-Mixed Composite Beam Bridge Based on Coupling Vibration of Vehicle-Bridge

Hao Qu ; School of Civil Engineering and Architecture, Chuzhou University, Chuzhou 239000, Anhui, China; Anhui Provincial International Joint Research Center of Data Diagnosis and Smart Maintenance on Bridge Structures, Chuzhou 239000, Anhui, China *
Yufeng Liu ; School of Civil Engineering and Architecture, Chuzhou University, Chuzhou 239000, Anhui, China; Anhui Provincial International Joint Research Center of Data Diagnosis and Smart Maintenance on Bridge Structures, Chuzhou 239000, Anhui, China
Shuigen Hu ; School of Civil Engineering and Architecture, Chuzhou University, Chuzhou 239000, Anhui, China; Anhui Provincial International Joint Research Center of Data Diagnosis and Smart Maintenance on Bridge Structures, Chuzhou 239000, Anhui, China

* Corresponding author.

Abstract

Based on the detailed study of the domestic and foreign standardized impact coefficient regulations and the collection of a large number of bridge sports car test data, this paper uses the ABAQUS finite element model to establish the axial coupling vibration analysis model. Considering that the upper structure of the curved bridge is affected by the coupling of bending and torsion under the action of the vehicle, the finite element software ANSYS and Dynamics software UM are used to analyze and study the spanning response of the curved bridge under the coupling effect of the axle. In response to the influence of heavy vehicles on steel composite girder Bridges, this paper compares and analyzes the influence of factors such as vehicle speed, vehicle weight and unstable bridge deck on the displacement influence coefficient and bending moment influence coefficient, and compares the difference with the standard calculated influence coefficient. The results show that the influence of vehicle speed on the impact coefficient increases first and then decreases, and the maximum value is reached at 80 km/h. The impact coefficient is greatly affected by road roughness, and increases with the decrease of road grade. The impact coefficient decreases with the increase of vehicle weight. The damping of vehicle (suspension system and tire) has little influence on the impact coefficient, which can be ignored in the study. The relationship between vehicle driving radius and impact coefficient is complicated. The impact coefficient of lateral deflection reaches the maximum value at the center line of the bridge, the impact coefficient of vertical deflection presents positive symmetry, and the impact coefficient of bending moment presents an antisymmetric trend, and the impact coefficient of torque is more sensitive to the vehicle driving radius.

Keywords

axle coupling vibration; dynamic load test; factors of irregularity; impact coefficient; steel-composite beam bridge

Hrčak ID:

337738

URI

https://hrcak.srce.hr/337738

Publication date:

31.10.2025.

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