ANSYS-Based Spatial Coupled Vibration Analysis Method of Vehicle-Bridge Interaction System

Abstract:

An ANSYS-based spatial approach of analysis is proposed for the bridge-vehicle interaction to investigate the dynamic responses of a curved concrete box girder bridge and vehicles. The governing equations of a vehicle model with twelve-degrees-of-freedom (12DOF) are derived from the energy method using the Lagrange equation of motion. Both the bridge and the vehicle system are discretized adopting element type BEAM44, MASS21 and COMBIN14 in the ANSYS program. The interaction forces between the vehicle and bridge are deduced considering the road surface roughness and its velocity term based on the compatibility conditions of the contact points, and detailed formula are presented. The separate iterative algorithm is developed to solve the vehicle-bridge interaction problem. A three-axle cargo truck and a dual-cell box girder curved overpass bridge are chosen for both numerical and field test analysis. The dynamic properties and the dynamic responses of the bridge are both obtained from the numerical and experiment way, and the results agree well with each other by comparison. Its indicated that the procedures presented in this paper can be taken for the further vibration analysis study of curved concrete box girder bridges.

• Periodical: Key Engineering Materials (Volume 574)
• Pages: 117-126
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.574.117
• Online since: September 2013
• Authors: Xin Yi Huang, Wei Dong Zhuo, Guan Ping Shang
• Keywords: Coupled Vibration, Curved Bridge, Field Test, Road Surface Roughness, Separate Iterative Algorithm, Vehicle Model

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