Safe speeds for a heavy articulated vehicle when passing a floating bridge tower under crosswind
Artikel i vetenskaplig tidskrift, 2024

This paper recommends safe speeds for a heavy articulated vehicle when passing by Bjørnafjorden floating bridge tower under two constant crosswind speeds (65 km/h and 100 km/h). The analysis is based on the tractor-semitrailer (TS) model with fifth-wheel (FW) coupling in roll and free in yaw. Comparison of safe speeds assessments has been made with two TS models differ in FW coupling. Aerodynamic forces and moments for TS models as function of their position relative to the bridge tower and time were computed using Computational Fluid Dynamics (CFD) simulations. For TS model coupled in roll and free in yaw, no rollover risk is noticeable for both crosswind excitations. For TS model free in roll and in yaw, roll-over risk is noticeable at lower vehicle velocities (at 36 km/h and 54 km/h). TS with rigid connection in FW stays in the traffic lane for every considered vehicle velocity. TS model which is roll and yaw moment free in the FW overestimates rollover risk assessment at lower vehicle velocities. TS model with rigid connection in the FW underestimates traffic lane departure assessment at higher vehicle velocity. Appropriate mathematical modelling of a heavy articulated vehicle that considers tractor and semitrailer units as two separate bodies coupled in roll and free in yaw is of importance for accurately assessing safe speeds when a vehicle passing by the bridge tower.

Bjørnafjorden

Simulation

Vehicle modelling

Aerodynamic loads

Tractor-semitrailer

Rollover risk

Traffic lane departure

Författare

Dragan Sekulic

Chalmers, Mekanik och maritima vetenskaper, Fordonsteknik och autonoma system

Alexey Vdovin

Chalmers, Mekanik och maritima vetenskaper, Fordonsteknik och autonoma system

Bengt J H Jacobson

Chalmers, Mekanik och maritima vetenskaper, Fordonsteknik och autonoma system

Simone Sebben

Chalmers, Mekanik och maritima vetenskaper, Fordonsteknik och autonoma system

Stian Moe Johannesen

Norwegian Public Road Administration

Results in Engineering

25901230 (eISSN)

Vol. 23 102496

Driving Comfort and Tracking Ability of Vehicles on Floating Bridges Moving due to Wind and Water Disturbances

Statens vegvesen, 2020-08-20 -- 2022-08-31.

Statens vegvesen, 2018-08-20 -- 2022-08-31.

Ämneskategorier

Transportteknik och logistik

DOI

10.1016/j.rineng.2024.102496

Mer information

Senast uppdaterat

2024-09-30