Abstract
In this work, a monorail vehicle-bridge coupling (VBC) model capable of accurately considering curve alignment and superelevation is established based on curvilinear moving coordinate system, to study the VBC vibration of straddle monorail curved girder bridge and the relevant factors influencing VBC. While taking Chongqing Jiao Xin line as an example, the VBC program is compiled using Fortran, where the reliability of algorithm and program is verified by the results of Chongqing monorail test. Moreover, the effects of curve radius, vehicle speed, and track irregularity on the corresponding vehicle and bridge vibrations are compared and analyzed. It is observed that the test results of lateral vibration acceleration (LVA) and vertical vibration acceleration (VVA) of track beam, and LVA of vehicle, are consistent with the simulation results. Owing to the track irregularity, vibration of track beam and vehicle increases significantly. Besides, an increase in vehicle speed gradually increases the vibration of track beam and vehicle. For the curve radius (R) ≤ 200 m, lateral and vertical vibrations of the track beam and vehicle decrease significantly with an increasing curve radius. Alternatively, when 200 m
Highlights
Straddle monorail transit, as a new type of lightweight urban rail transit, has developed rapidly in Chongqing and Wuhu during the recent years
For a vehicle speed larger than 30 km/h, the test results for vertical vibration acceleration (VVA) in the middle of a track beam are between the numerical simulation results of “irregularity 1” and “irregularity 2”
The test results for lateral vibration acceleration (LVA) in the middle of track beam are consistent with the simulation results of “irregularity 1” and “irregularity 2”
Summary
As a new type of lightweight urban rail transit, has developed rapidly in Chongqing and Wuhu during the recent years. The straddle monorail is dominated by the curved alignment, where minimum radius is 50 m, which is far less than that of the conventional railway. The curve plays a critical role in the dynamic response of a vehicle [1]. It is necessary to study the influence of a curved beam on the VBC dynamic. CMES, 2022, vol.130, no.3 performance of monorail transit. The corresponding results can provide a reference for the design, construction, and maintenance of the straddle monorail transit
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
