Dissertation > Excellent graduate degree dissertation topics show

Numerical Simulation of Safety of Wind-Resistant Open Cut Tunnel of Second Lanzhou-Xinjiang Railway

Author: DaiZengQiang
Tutor: YangQiXin
School: Southwest Jiaotong University
Course: Bridge and Tunnel Engineering
Keywords: Wind-resistant open cut tunnel wind load opening section safety numerical simulation
CLC: U216.413
Type: Master's thesis
Year: 2011
Downloads: 35
Quote: 0
Read: Download Dissertation

Abstract


Most of domestic existing railways through the sandy area adopt the open-wire solutions. The engineering measures of roadbed wind wall, sand fence, planting of desert plants, sand control dam, etc are taken and certain results were achieved. However, the results are usually limited for normal speed railways, and the phenomenon of inner wall accumulated with sand is very serious, and the conservation work is huge. The scheme of open cut tunnel can maximize the isolation of wind environment from the train operating environment. The windproof effect is good, but there are problems of high costs, poor operating environment, inconvenient construction work and large amount of repair and maintenance work. At present, some researches on domestic anti-wind structures are generally based on the embankment of normal speed railway and bridge wind wall, and there are no precedents to adopt the wind-resistant open cut tunnel for the high-speed railway for wind resistance, and there are no researches in this area at home and abroad.In this paper, based on the wind resistant project of second Lanzhou-Xinjiang Rail Line, the numerical simulation and computation is used as the main research method to study the following aspects.(1) With FLUENT software, the numerical simulation and computation are carried out on the numerical situations of wind load inside and outside of open cut tunnel and external and internal flow field under the maximum wind speed of 70m/s.(2) With ANSYS software, the wind load value obtained from the numerical simulation and computation of FLUENT software is applied on models of open cut tunnel with different section forms, so as to simulate and calculate the safety and related situations of open cut tunnel structure in the most adverse wind load;(3) With numerical simulation software, the limit wind speed of the train is simulated and computed, and the comparison is made between the maximum wind speed inside the open cut tunnel in different opening forms obtained in the case of maximum wind speed of 70m/s so as to judge the safety of train operation in the tunnel.

Related Dissertations

  1. The Setting Bases of Working Pressure in LNG Systems and Orthogonal Experiment Design of Heat Exchangers,TQ051.5
  2. Study on Springback of High-Strength Steel Stamping,TG386
  3. Numerical Simulation and Experiment on Hydroforming of Cups with Controllable Radial Pressure,TG386
  4. Research on Technology and Mechanism of Joining Cemented Carbide to Carbon Steel,TG454
  5. Numerical Simulation of Film Cooling in Turbine Cascade with Non-Axisymmetric Endwall Method,V231.3
  6. High Speed Aerodynamic Convection and Coupled Heat Transfer of Complicated Bodies,V215.4
  7. The Analysis on Characteris of Vibration Source about Vertical Vibration of Surrounding Environment Induced by Rail Transit,U211.3
  8. The Study on Structural Calculation and Analysis Method of Lattice-type Crane with Variable Cross-section Boom,TH21
  9. Study on the Heat Transfer Characteristics of Particle Cluster in Circulating Fluidized Bed,TK124
  10. Numerical Simulation of SNCR Process of a 600MW Utility Boiler,TK222
  11. Numerical Simulation of Biomass Direct Reburning,TK16
  12. Numerical Simulation on Pulverized Coal Combustion Process in a 670T/H Tangential Firing Furnace,TK224.11
  13. Numerical Simulation on the Combustion Process in the Furnace of a 1000MW Lignite-Fired USC Boiler,TK224.11
  14. Study on Gas-Solid Two-Phase Flow in Spouted Beds,TK173
  15. Experimental Study and Numerical Simulation on Aerodynamic Field of Tangential Bias Swirl Burner,TK223.23
  16. Characteristic Study of Combustion in Central Reverse Flame Chamber,TK223.21
  17. Numerical Simulation and Contrastive Analysis of Labyrinth Seals and Leaf Seals,TK263.2
  18. Research on Fault Detection and Network Reconfiguration Algorithms for Distribution Network,TM727
  19. Study on LC Resonance Charge and POS Based Pulsed Power Supply,TN782
  20. The Research of Mountain Outdoor Sports Base Construction in Zhejiang Daming Mountain Scenic,G895
  21. Research on the Policy Implementation That Sports Venues of Schools Open to the Social,G818.2

CLC: > Transportation > Rail transport > Railway Line Project > Railway maintenance and repair > Line Maintenance and disease disaster management > Line disease disaster prevention > Wind , sand and equipment
© 2012 www.DissertationTopic.Net  Mobile