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Ride comfort of the bridge-traffic-wind coupled system considering bridge surface deterioration

  • Received : 2016.01.03
  • Accepted : 2016.05.17
  • Published : 2016.07.25

Abstract

In the present study, a new methodology is presented to study the ride comfort and bridge responses of a long-span bridge-traffic-wind coupled vibration system considering stochastic characteristics of traffic flow and bridge surface progressive deterioration. A three-dimensional vehicle model with 24 degrees-of-freedoms (DOFs) including a three-dimensional non-linear suspension seat model and the longitudinal vibration of the vehicle is firstly presented to study the ride comfort. An improved cellular automaton (CA) model considering the influence of the next-nearest neighbor vehicles and a progressive deterioration model for bridge surface roughness are firstly introduced. Based on the equivalent dynamic vehicle model approach, the bridge-traffic-wind coupled equations are established by combining the equations of motion of both the bridge and vehicles in traffic using the displacement relationship and interaction force relationship at the patch contact. The numerical simulations show that the proposed method can simulate rationally the ride comfort and bridge responses of the bridge-traffic-wind coupled system; and the vertical, lateral, and longitudinal vibrations of the driver seat model can affect significantly the driver's comfort, as expected.

Keywords

bridge;traffic;vibration;ride comfort;bridge surface

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Cited by

  1. Evaluation of the Wind-Resistant Performance of Long-Span Cable-Stayed Bridge Using the Monitoring Correlation between the Static Cross Wind and Its Displacement Response vol.2018, pp.1875-9203, 2018, https://doi.org/10.1155/2018/5369281
  2. The Aerodynamic Characteristics of Vehicle under Lateral Wind Action for the Process of Two Vehicles Passing Each Other vol.1064, pp.1742-6596, 2018, https://doi.org/10.1088/1742-6596/1064/1/012019

Acknowledgement

Supported by : Natural Science Foundation China