Dissertation > Excellent graduate degree dissertation topics show

Analysis of Buffeting Response for Long-span Airfoil Bridge and Research of Wind Tunnel Test

Author: LiGang
Tutor: HuZhaoTong
School: Chang'an University
Course: Bridge and Tunnel Engineering
Keywords: Bridge structure Wind load Wind tunnel test Aeroelastic model Dynamic characteristics Buffeting
CLC: U441.3
Type: Master's thesis
Year: 2009
Downloads: 82
Quote: 1
Read: Download Dissertation

Abstract


In recent years , with the modern bridge technology continues to improve , across the Strait Bridge, rivers and even continue to emerge , these large-span bridges must overcome natural action of the wind . Wind Load current research studies the distribution of the main field test , wind tunnel test and numerical simulation of three methods , including wind tunnel tests at this stage the primary means of research method is more mature . But the wind tunnel test cycle is long , but to spend a lot of manpower and material resources. Field test carried out only after completion of the structure , but also more costly , but also by the season , the venue and many other factors. Development of computer technology for structural wind load simulation study provides new methods and means that it appears from the field of wind engineering since become a hot research and development , compared to the traditional method which has a unique advantage. The use of computer simulation technology can easily flow around a wind field structure simulated, physical quantities such as wind speed and wind pressure distribution characteristics , in order to predict the structure of the planning and design of the pros and cons , and suggest improvements program , make the design more reasonable, improve design quality and efficiency. In this paper, Tianjin Haihe Willows bridge as the research object , its wind resistance , especially wind-induced response in-depth study . Mainly for the following aspects: First, the article describes the bridge dynamic characteristics analysis of finite element theory and calculation methods , and the use of spatial beam structures of the finite element model of the Tianjin Haihe Willows bridge dynamic characteristics were calculated to obtain and frequency of the fundamental mode . Secondly, introduces the basic theory and buffeting analysis based on frequency domain buffeting response theory calculations , and use Scanlan quasi-steady aerodynamic buffeting forces calculated and self- excited forces and consider the aerodynamic admittance , using the finite element method development CQC for solving large-span bridge buffeting response coupled finite element method . Finally, Tianjin Haihe Bridge Willows conducted aeroelastic model wind tunnel tests , using a wedge Canadian dollar device to simulate the rough at the bridge site wind environment, test different wind angle to shed , bridge wing , the second wing of the main beam jitter induced response . Through analysis and comparison , obtained some theoretical significance and practical value conclusion , and is designed to provide support on the experimental validation .

Related Dissertations

  1. Design and implementation of the multi-channel pressure sensor auto-calibration system,TP212
  2. The Study of Finned Tube Heat Exchanger’s Computer Aided Design Pllatform,TK172
  3. Research on Vortex-induced Resonance of the Main Beam,U441.3
  4. Based on Response Spectrum Finite Element Analysis of Dynamic Characteristics and Seismic Response for Cable-stayed Bridge,U441.3
  5. Research on Design and Test of Electromangetic Actuator of Diesel Engine,TK423
  6. Performance Study on Aseismic Analysis and Wind-resistance of Chongbin·Baoli International Square,TU352.11
  7. Experimental Study of Radiator Module in Vehicle,U467.3
  8. Effects of Sidewall on the Performance of 2-d Supersonic Inlet,V231.3
  9. Investigation of Supersonic Non-uniform Flow Simulation Method,V231.3
  10. Research on Intermediate Infrared Colorimetric Pyrometry System,TH811
  11. A Design of Air Flow Calibration System Based on Wind Tunnle,TH814
  12. Experimental Study of Aeroelasticity for the Blades of Horizontal Axis Wind Turbines,TK83
  13. Studies on Icing Effect on Aerodynamics Characteristics of the Straight-bladed Vertical Axis Wind Turbine,TK83
  14. Bridges boom Numerical Study of Aerodynamic Performance,U441.3
  15. Scramjet engine fuel supply system solutions research,V235
  16. Based on the dynamic response of bridge overload real-time monitoring system development,TP274
  17. Based the dual spool excavator boom control system characteristics and energy efficiency research,TU621
  18. Ordinary reinforced concrete bridge structural stress and Research Methods of Measurement,U446
  19. Numerical Methods rural buildings and wind loads wind tunnel characteristics,TU312.1
  20. Analysis of Coal Combustion Desulfurization Efficiency for Circulating Fluided Bed Boiler,TK229.66
  21. Wind-induced Vibration Response Analyses of Long-Span Arch Bridge Considring Soil-Structure Interaction,U448.22

CLC: > Transportation > Road transport > Bridges and Culverts > Structural principles, structural mechanics > Bridge vibration and damping device
© 2012 www.DissertationTopic.Net  Mobile