Wind field characteristics of asymmetric bridge deck for a road-rail same-story bridge
Source abstract
Abstract
The purpose of this study is to investigate the flow field characteristics of the road-rail same-story asymmetric bridge deck and the influence of the asymmetric arrangement of the bridge deck on the flow field of the main girders. Numerical simulation tests were conducted on this bridge to analyze the distribution characteristics of the flow field near the main girder, as well as the aerodynamic characteristics of the railway bridge deck and highway bridge deck under different wind speeds and directions. The results indicate that the wind speed has less influence on the flow field distribution and aerodynamic characteristics of the road-rail same-story asymmetric bridge deck, but the incoming flow direction has a significant impact on its flow field characteristics. Compared to the railway bridge deck, during the reattachment position of the airflow, the highway bridge deck moves toward the windward side, and the volume of the separation bubble has been reduced, thus improving the effect on the negative pressure area of the railway bridge deck. The road-rail same-story asymmetric bridge deck has different aerodynamic interference characteristics for different wind speeds and different wind directions.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Aerodynamics and Fluid Dynamics Research · Fluid Dynamics and Vibration Analysis · Wind and Air Flow Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Civil Engineering, Shijiazhuang Tiedao University , Shijiazhuang 050043, China
Funding
Hebei Youth Science Foundation
References (13)
Show source-provided references
1. Numerical simulation on aerodynamic characteristics of typical vehicles on bridges and the windshield effects between vehicles10.6052/j.issn.1000-4750.2017.01.0002 ↗
2. Study on the crosswind environment around bridge with the numerical wind tunnel method
3. Numerical and physical simulation and full-scale measurement of local wind environment around slotted box girder with wind barriers
4. 3D wind field measurement and simulation of a long-span cable-stayed rail-cum-road bridge
5. Wind tunnel investigation on effect of main girder cross section on performance of wind barrier installed in long-span bridge10.11817/j.issn.1672-7207.2023.04.019 ↗
6. Influence of truss section on wind-vehicle-bridge coupling vibration characteristics of long span rail-cum-road bridge10.3969/j.issn.1003-1995.2023.02.11 ↗
7. Wind tunnel test research on optimal train track arrangement the highway and railway combined bridge10.3963/j.issn.2095-3844.2020.01.023 ↗
8. Aerodynamic interference effect of twin separated asymmetric parallel decks for a rail-cum-road bridge10.19713/j.cnki.43-1423/u.T20222067 ↗
9. Wind environment around the tower of long span railway-highway combined cable-stayed bridge10.11918/j.issn.0367-6234.201803143 ↗
10. Numerical study on local wind environment around bridge deck near pier10.3969/j.issn.1002-0268.2018.10.010 ↗
11. Effects of different turbulence models on fluid flow in backward facing step10.3963/j.issn.1674-6066.2020.01.011 ↗
12. Numerical analyses of current load of large bridge caisson during its sinking process10.13238/j.issn.1004-2954.201911010005 ↗
13. Study of aerodynamic characteristics of trapezoidal columns based on RANS turbulence model