Dissertation > Excellent graduate degree dissertation topics show

Study on the Longitudinal Forces of B(?)GL Ballastless Track Slab on Simply-Supported Bridges

Author: CaoLi
Tutor: WangPing
School: Southwest Jiaotong University
Course: Road and Railway Engineering
Keywords: Bo ¨gl ballastless slab track simply-supported bridges longitudinal force analysis
CLC: U213.244
Type: Master's thesis
Year: 2007
Downloads: 251
Quote: 11
Read: Download Dissertation

Abstract


Based on the Beijing-Tianjin inter-city rail transit project, this paper established a bog ballastless track slab on bridges finite element model to analysis of the longitudinal forces. Taking into account the complexity and the amount of calculation of model, in this paper model of the rail, track plates, the base plate and the bridge to simplify the beam elements to simulate . Meanwhile CA mortar layer to the role of the model that can ensure a coordinated deformation between plate and the base plate, so it that is equivalent to one beam layer to simulate . Fastener longitudinal resistance and friction between the base plate and bridge are simulated by nonlinear spring element, and the pier stiffness is simulated by linear spring element.This paper analysis of the longitudinal static force to Multi-span simply-supported bridge, including braking force, stretching force, and the rupture force of rails. In the above analysis, the aspect of different friction coefficient between bridge and base plate, plate stiffness and the length of friction plates are in all considered. Condition of the rupture force of rails, it studies the influences of rail-gap in track temperature changes and beam temperature variations respectively variations. This paper also compares and analysis the structure force of 24m and 32m span of simply-supported bridges,also the author studies the influences of different layout of fastener.The results show that the track plate under a larger force in temperature load can be used as a predominant factor in its design, low friction coefficient between the base plate and bridges and more comprehensive slab extendable stiffness are in good condition to the structure, Also low friction coefficient between the base plate and bridges also can effectively reduce the structure force influenced by the bridge span changes.

Related Dissertations

  1. Research on Developmental Strategies of Commercial Fitness Clubs in Nanning Based on SWOT Analysis,G80-05
  2. Quantitative Analysis of Pyrolysis Component of Typical Low Volatile Coal of Chinese,TQ530.2
  3. Research on Mechanism Analysis and Modeling Simulation of Horizontal Well Tractor,P631.83
  4. Research on the Mainframe System of Powder Mixed EDM and the Craft Experiment,TG661
  5. Image Analysis System of Metal Transfer of Gas Metal Arc Welding,TG444
  6. EDM Electrode Wear Mechanism and Control Research,TG661
  7. The Effect of Composite Additive on the SNCR,X701
  8. Tooth Profile Modeling and Machining Error Analysis of the Face Gear,TH132.41
  9. Finite Element Analysis and Structure Optimal Design for Combined Seal at Normal Temperature and Low Temperature,TH136
  10. Error Analysis and Measurement Method Design for the Hemispherical Resonator Gyro,V241.5
  11. Pattern Classification of Combustion Modes in Scramjet,V235
  12. Temperature Drift Modeling and Compensation of Fiber-Optic Gyroscopes,V241.5
  13. Simulation Analysis on Temperature Stress of RCC Arch Dam and Its Construction Joints Design Research,TV642.2
  14. Analysis and Study of Abutment Stability in Concrete High Arch Dam by Three-Dimensional Nonlinear Finite Element Method,TV642.4
  15. Key Technologies of Dam-break Life Loss Risk Assessment Research,TV122.4
  16. The Research on the Architectural Adumbral Method of Building,TU226
  17. Based on Nonliner Finite Element Analysis of the Infilled Wall Frame Structure,TU323.5
  18. Study on the Improvement Depth of Dynamic Consolidation by Methods of Mathematical Physics,TU472.31
  19. The Flow Theroy Investigation of Compressor Cascade with Split,TK474.8
  20. Transient Thermal Analysis of Multi-Body System with Complicated Boundary Conditions,TK124
  21. Research on Testing and Analyzing Technology for Time Parameter of Aerospace Relay,TM58

CLC: > Transportation > Rail transport > Railway Line Project > Line constructed > Track > New rail foundation > Ballasted track
© 2012 www.DissertationTopic.Net  Mobile