Vibration analysis of a multi-span continuous bridge subject to complex traffic loading and vehicle dynamic interaction

• Published in: KSCE journal of civil engineering Vol. 20; no. 1; pp. 323 - 332
• Main Authors: Wang, Lingbo, Kang, Xin, Jiang, Peiwen
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society of Civil Engineers 01.01.2016; Springer Nature B.V; 대한토목학회
• Subjects: Bridge loads; Bridges; Bridges (structures); Civil Engineering; Continuous bridges; Decay; Driving conditions; Dynamic tests; Dynamics; Engineering; Finite element method; Geotechnical Engineering & Applied Earth Sciences; Industrial Pollution Prevention; Loads (forces); Mathematical models; Numerical analysis; Numerical models; Stiffness; Structural Engineering; Traffic; Traffic engineering; Traffic flow; Traffic models; Vehicles; Vibration; Vibration analysis; Vibration response; Vibrations; 토목공학; girder stiffness decay; bridge engineering; vehicle-bridge coupled vibrations
• ISSN: 1226-7988; 1976-3808
• DOI: 10.1007/s12205-015-0358-4

A numerical analysis of the dynamic behavior of multi-span continuous bridges subject to traffic loadings and vehicle dynamic interactions is presented in this paper using the finite element program ANSYS. The proposed numerical model is capable of: (1) analyze “complex bridge systems”, “complex vehicle models”, and “complex traffic conditions”; (2) predict the vehicle-bridge coupled vibration response under various complex traffic loadings and vehicle dynamic conditions including the passage of multiple vehicles, vehicles changing lanes, vehicles subject to constant acceleration, and vehicles overtaking; and, (3) investigate the effect of girder stiffness decay on the coupled vibration of the vehicle-bridge system. Analytical and experimental results indicate that decay in the girder stiffness has a major effect on the coupled vibrations between the vehicles and bridge. The established method could be extended to analyze the vehicle-bridge coupled vibrations of many different types of bridges subject to complex vehicle loadings, which potentially could have a broad impact in the field of Bridge Engineering.