Preliminary Investigation of Vehicle-Bridge Interaction Using Instantaneous Frequency Response Functions
Part Of
IABSE Symposium Tokyo 2025: Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches - Report
Start Page
2165
End Page
2171
ISBN
9783857482069
Date Issued
2025
Author(s)
Cheng, Chi
Abstract
When a vehicle travels on a bridge, the interaction generated between the vehicle and the bridge is the main source of dynamic response in the system. To understand the characteristics and behavior of the vehicle-bridge interaction system, this study derives the instantaneous frequency response function of the system. In this research, a single sprung mass or multiple sprung masses are used to simulate the moving train. The assumed mode method is applied to simulate the bridge response in the form of the first mode or the superposition of multiple modes. Subsequently, the instantaneous frequency response function of the vehicle-bridge interaction is obtained. In this research, a parametric study is carried out to investigate multiple variables. As a result, the analytically instantaneous frequency response function is validated to be consistent with numerical results and has the potential to be employed in the structural monitoring of bridges in the future.
Event(s)
IABSE Symposium Tokyo 2025: Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches. 18 May 2025 - 21 May 2025, Tokyo.
Subjects
assumed-mode method
bridge monitoring
instantaneous frequency response functions
multiple modes
natural frequencies
sprung masses
vehicle-bridge interaction
Publisher
International Association for Bridge and Structural Engineering (IABSE)
Type
conference paper