Dissertation > Excellent graduate degree dissertation topics show

Research of Aerodynamic Interference Effects on Vortex-induced Vibration of Two Decks in Tandem for Large-span Bridges

Author: LiXiaoZuo
Tutor: ChenZhengQing；LiuZhiWen
School: Hunan University
Course: Bridge and Tunnel Engineering
Keywords: large-span bridges two decks in tandem wind tunnel tests vortex-induced vibration aerodynamic interference effects interference mechanism
CLC: U441.3
Type: Master's thesis
Year: 2009
Downloads: 128
Quote: 2
Read: Download Dissertation

Abstract


Large span bridges with two decks in tandem are mainly classified as the follow two kinds. A bridge with two decks in tandem is built one time to meet the large traffic flow, and a new bridge locates parallel to the existing bridge to accommodate increase of traffic flow. Now days, bridges are designed more and more wide because of increase of traffic volume and bridges with two decks in tandem become a good alterative to bridge designers for the reasons of good visual effects and driving conditions. The aerodynamic interference effects on the two decks in tandem under wind loads can not be neglected due to the short net distance between them. For example, the aerodynamic interference effects on vortex-induced vibration, flutter stability, and buffet response of the two decks in tandem are the main topics in wind-resistant design of bridges with two decks in tandem.The aerodynamic interference effects on vortex-induced vibration of two decks in tandem were investigated in detailed in present thesis under the support by National Science Foundation of China (No.50608030). The main research contents of this thesis are shown below:1. The aerodynamic interference effects in civil engineering structures and aerodynamic interference effects on vortex-induced vibration of bridges with two decks in tandem were reviewed.2. Three models of typical bridge deck sections, such as rectangular deck, streamline deck and PI shape decks, were designed. The test equipments for wind tunnel tests of aerodynamic interference effects on vortex-induced vibration of two decks in tandem were introduced briefly. The test cases for aerodynamic interference effects on vortex-induced vibration of two decks in tandem of three typical deck sections were listed for different parameters, such as damping ratio, net distance between two decks in tandem, turbulence intensity.3. The wind tunnel tests for vortex-induced vibration of single rectangular cylinder and two rectangular cylinders in tandem with different parameters such as net distance between two decks, damping ratio and turbulence intensity, were conducted separately. The aerodynamic interference effects on vertical and torsional VIV response of two rectangular cylinders in tandem were analyzed.4. The wind tunnel tests for vortex-induced vibration of single streamline cylinder and two streamline cylinders in tandem with different parameters such as net distance between two decks, damping ratio , were conducted separately. The aerodynamic interference effects on vertical and torsional VIV response of two streamline cylinders in tandem were analyzed.5. The wind tunnel tests for vortex-induced vibration of single PI shape cylinder and two PI shape cylinders in tandem with different parameters such as net distance between two decks, damping ratio , were conducted separately. The aerodynamic interference effects on vertical and torsional VIV response of two PI shape cylinders in tandem were analyzed.6. According to the research results of aerodynamic interference effects on three typical cylinders in tandem, the pressure distribution of the three typical cylinders were investigated in detailed to explain aerodynamic interference mechanism of the VIV of two decks in tandem.

Related Dissertations

  1. The Fluid Dynamics Characteristics for Suppression of Vortex-induced Vibration on Marine Riser by Affiliated Risers,O353.1
  2. Investigation on Vortex-Induced-Vibration of Flexible Risers with Buoyancy Modules,TB123
  3. The Study on the Parametric Vibration for Top-Tension Riser in Deep-sea,P756.2
  4. Analysis and Numerical Simulation on Vortex-induced Vibration of Flexible Risers,U661.44
  5. Mechanism Research on Suppression of Vortex-induced Vibration of Deep-water Top Tension Riser by Helical Strakes,P75
  6. The Static and VIV Induced Fatigue Damage Study of Steel Catenary Riser,U661.4
  7. Two-Dimensional Numerical Simulation of Flow Around a Cylinder and Vortex-Induced Vibration,U441.3
  8. Experimental Investigation of Vortex-Induced Vibration and Suppression Devices of Marine Riser,P756.2
  9. Numerical Wind Tunnel and Investigations on Vortex-Induced Vibrition of a Ring-Like Structure,TU311.3
  10. Study on Hydrodynamic Performance of S-Spar and Fatigue Behaviors of Its Riser System,U674.384
  11. Wind-Resistent Performance and Aeerodynamic Optimization Measures for Super-Long-Span Bridge with Three-Box Girder,U441.3
  12. Research on the Railway Traffic Disturbance and Its Related Issues,U292.4
  13. VIV Fatigue Assessment of Deepwater Multi-span Pipelines,P756.2
  14. The Study of Non-linear Coupling Model in Vortex-Induced Vibration,P756.2
  15. Research on VIV Induced Fatigue Damage for Deepwater Riser Using Pseudo-excitation Method,P756.2
  16. Numerical Simulation Study of Tri-component Force Coefficient of Continuous Rigid Frame Bridge with Loing-span and High-pier,U441
  17. Research on Conducted Interference Prediction Modes of PWM Drive Motor System,TM301.4
  18. Study on the Key Technologies of Wind Tunnel Test and Wind-Induced Vibration for Long-Span Reticulated Dome,TU312.1
  19. The Research on Aerodynamic Interference Effect on Two Decks in Tandem for Large-span Bridges Based on FLUENT,U441.3
  20. The Research on Numerical Simulation of Aerodynamic Performance of Continuous Rigid Frame Bridge,U441.3

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