Numerical simulation of wind turbulence and buffeting analysis of long-span bridges

1999 ◽  
Vol 83 (1-3) ◽  
pp. 301-315 ◽  
Author(s):  
Nguyen Nguyen Minh ◽  
Toshio Miyata ◽  
Hitoshi Yamada ◽  
Yoshihiro Sanada
Keyword(s):  
Numerical Simulation ◽  
Long Span Bridges ◽  
Long Span ◽  
Wind Turbulence

Numerical Simulation of Wind-Driven Rain on a Long-Span Bridge

2019 ◽  
Vol 19 (12) ◽  
pp. 1950149
Author(s):  
Shenghong Huang ◽  
Qiusheng Li ◽  
Man Liu ◽  
Fubin Chen ◽  
Shun Liu
Keyword(s):  
Numerical Simulation ◽  
Wind Engineering ◽  
Multiphase Model ◽  
Rain Intensity ◽  
Long Span Bridges ◽  
Long Span ◽  
Long Span Bridge ◽  
Extreme Rain ◽  
Section Model ◽  
Bridge Spans

Wind-driven rain (WDR) and its interactions with structures is an important research subject in wind engineering. As bridge spans are becoming longer and longer, the effects of WDR on long-span bridges should be well understood. Therefore, this paper presents a comprehensive numerical simulation study of WDR on a full-scale long-span bridge under extreme conditions. A validation study shows that the predictions of WDR on a bridge section model agree with experimental results, validating the applicability of the WDR simulation approach based on the Eulerian multiphase model. Furthermore, a detailed numerical simulation of WDR on a long-span bridge, North Bridge of Xiazhang Cross-sea Bridge is conducted. The simulation results indicate that although the loads induced by raindrops on the bridge surfaces are very small as compared to the wind loads, extreme rain intensity may occur on some windward surfaces of the bridge. The adopted numerical methods and rain loading models are validated to be an effective tool for WDR simulation for bridges and the results presented in this paper provide useful information for the water-erosion proof design of future long-span bridges.

Field Investigation and Wind-Environment Numerical Simulation of Cable-Stayed Bridge Site in the West Midlands Region

2011 ◽  
Vol 255-260 ◽  
pp. 4202-4206
Author(s):  
Yue Zhang ◽  
Mi Zhou
Keyword(s):  
Numerical Simulation ◽  
Wind Speed ◽  
Field Investigation ◽  
Wind Flow ◽  
Observation Data ◽  
Bridge Site ◽  
Wind Speed Profile ◽  
Long Span Bridges ◽  
Long Span ◽  
The One

The area of mountain ridge accounts for the most part of our country land. With the development of economic construction, more and more long span bridges have been built in the mountainous region of the western in China.. Combining live observed wind with numeric simulation, the wind characteristics on the western gap of valley areas are studied. On the one hand through the self-development processing of the bridge speed data to analyze massive wind observation data, the parameters (such as wind speed profile, turbulence intensity, power spectral density) used as the main basis for calculating wind loads are achieved. On the other hand wind flow around the bridge site as well as the environment around the mountain wind flow, wind speed field and the distribution of turbulent flow, etc is obtained by using CFD technology. Based on the results that is compared with that of numerical simulation by FLUENT, the reliability and efficiency of the program is testified. It would be provided with great theoretical significance and practical engineering value passes through the foregoing study.

Numerical simulation of wind-induced forces on bridge deck sections of long-span bridges

1997 ◽  
Vol 62 (4) ◽  
pp. 667-679 ◽  
Author(s):  
O.U. Onyemelukwe ◽  
M.A.M. Torkamani ◽  
H.R. Bosch
Keyword(s):  
Numerical Simulation ◽  
Bridge Deck ◽  
Long Span Bridges ◽  
Long Span

Standardization and Optimization of Orthotropic steel deck with Numerical modelling

2019 ◽  
Author(s):  
Nouman Iqbal ◽  
Heng Fang ◽  
Gilles Van Staen ◽  
Ahsan Naseem ◽  
Hans De Backer
Keyword(s):  
Numerical Simulation ◽  
Direct Contact ◽  
Complex Structure ◽  
Labor Cost ◽  
Orthotropic Steel Deck ◽  
Long Span Bridges ◽  
Long Span ◽  
Stress Relieving ◽  
Fatigue Endurance ◽  
Steel Deck

<p>In this paper, standardization and optimization of Orthotropic Steel Deck (OSD) is carried out to increase its usage as an essential bridge component. OSD’s are more often used in the long span bridges because they considered expensive and more complex structure. There are fatigue crack complications associated with these type of steel decks due to their direct contact with the heavy cyclic loading. The idea of standardizing the OSD’s is floating in the research industry for last two decades. To facilitate this concept numerical simulation study is carried out with and without additional cutouts with different deck thicknesses and span lengths. The Cross beams without stress relieving cutouts have been introduced which will reduce the labor cost for special cutouts preparation and increase the fatigue endurance of critical welded joints. Based on these numerical results; recommendations have been made. Standardization and optimization of OSD’s will definitely increase their usage in bridges.</p>

scholarly journals Recent Research and Applications of Numerical Simulation for Dynamic Response of Long-Span Bridges Subjected to Multiple Loads

2014 ◽  
Vol 2014 ◽  
pp. 1-17 ◽  
Author(s):  
Zhiwei Chen ◽  
Bo Chen
Keyword(s):  
Numerical Simulation ◽  
Dynamic Response ◽  
Coupled System ◽  
Dynamic Responses ◽  
Response Analysis ◽  
Road Vehicles ◽  
Dynamic Interactions ◽  
Long Span Bridges ◽  
Existing Problems ◽  
Long Span

Many long-span bridges have been built throughout the world in recent years but they are often subject to multiple types of dynamic loads, especially those located in wind-prone regions and carrying both trains and road vehicles. To ensure the safety and functionality of these bridges, dynamic responses of long-span bridges are often required for bridge assessment. Given that there are several limitations for the assessment based on field measurement of dynamic responses, a promising approach is based on numerical simulation technologies. This paper provides a detailed review of key issues involved in dynamic response analysis of long-span multiload bridges based on numerical simulation technologies, including dynamic interactions between running trains and bridge, between running road vehicles and bridge, and between wind and bridge, and in the wind-vehicle-bridge coupled system. Then a comprehensive review is conducted for engineering applications of newly developed numerical simulation technologies to safety assessment of long-span bridges, such as assessment of fatigue damage and assessment under extreme events. Finally, the existing problems and promising research efforts for the numerical simulation technologies and their applications to assessment of long-span multiload bridges are explored.

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