Dissertation > Excellent graduate degree dissertation topics show

Research on Temperature Field and Temperature Effect of Half-through Tied Arch Bridge with Steel Box Arch-ribs

Author: GuoYongGuo
Tutor: LvZhongDa
School: Chang'an University
Course: Bridge and Tunnel Engineering
Keywords: temperature field temperature stress steel box-girder long-span steel bridge temperature effect
CLC: U441.5
Type: Master's thesis
Year: 2011
Downloads: 91
Quote: 2
Read: Download Dissertation

Abstract


Along with the rapid development of bridge construction in our country, the long span steel bridge has become a new development trend for its lighter-weight steel components and shorter construction period. Because of the good thermal conductivities of steel, most sensitive to the temperature changes, the steel bridge is significantly influenced by ambient temperature changes. At present, the design codes regarding temperature gradient of steel bridge vary from country to country. Under the circumstances, the research on the temperature field and temperature effect of the steel bridge is particularly urgent. Thus, the thesis analyzed on the most typical temperature field data which was observed on one half-through tied arch bridge with steel box arch-ribs, a long-span steel bridge in Zhejiang province, and studied its temperature effect by finite element software MIDAS/civil. The main work and conclusions are summarized as follows:(1) The thesis introduces the analysis theory of temperature field in bridge structure, classification of temperature effect and the theory of temperature effect computation in details. Then specifications for temperature effect in national and international design codes are introduced.(2) With the temperature distribution analysis based on the measured temperature data of stiffening girder, a vertical temperature gradient curve is obtained after flitting the unfavorable vertical temperature distribution by piecewise function. It’s a valuable reference for future research on the temperature gradient of steel box girder.(3) The law of temperature distribution is derived through the analysis on the measured temperature data of steel arch ribs., After the fitting of its unfavorable temperature distribution using the numerical analysis software Origin8.0, the curves of temperature gradient along the vertical and transverse section are obtained.(4) According to the derived temperature gradient curve of the stiffening girder and steel box arch rib, nonlinear temperature gradient is equivalent to the linear temperature gradient. Using the finite element software MIDAS/civil to establish the overall bridge model, the temperature gradient effect and the integral temperature effect are calculated respectively. The result indicates that the thermal stress and temperature deformation produced by the temperature gradient and the integral temperature effect can not be neglected.

Related Dissertations

  1. Study on Contact Fatigue Life Based on Grease Variation with Temperature,TH117.22
  2. Simulation Analysis on Temperature Stress of RCC Arch Dam and Its Construction Joints Design Research,TV642.2
  3. Analysis and Study of Abutment Stability in Concrete High Arch Dam by Three-Dimensional Nonlinear Finite Element Method,TV642.4
  4. Photosynthetic Apparatus Response to Heat Stress and the Mechanisms in Two Different Cotton with Various Leaf Colours,Q945.11
  5. Effects of Low Temperature Stress on Fatty Acid Composition and Content of Oreochromis Hornorum,S917.4
  6. Effects of Low Temperature Stress on Blood Physiological and Biochemical Indexes of Oreochromis Hornorum,S917.4
  7. Construction and Primary Analysis of Differentially Expressed cDNA Library of Alfalfa by Using Suppression Subtractive Hybridization under the High Temperature,S541.9
  8. The Large Concrete Hydration Heat Temperature Effects Research of the Cable Stayed Bridge,U441.5
  9. Nonlinear Analysis of the Temperature and Shrinkage Stress of Super-long Reinforced Frame Concrete Structure and Design Measures Research,TU375.4
  10. The Effect of Low Temperature Stress on Fatty Acid of Cell Membrane in Alfalfa Crowns,S541.9
  11. Study of Micro Electron Mechanical System Performance Based on Temperature Field of Casimir Potential Energy,TH703
  12. Strength Analysis and Parameters Optimization of the Cylinder of Three-channel Rotary Dryer,TK173
  13. The Study and Application on the Temperature Field in a 3d Online System of the Slab in Reheat Furnace,TG307
  14. Stress Analysis of Steel Bridge Pavement and a Study on Harmonic Analysis of Frame Structures,U443.33
  15. Spatial Mechanic Analysis and Construction Monitoring Study for the Steel-Concrete Composite Multi-Girder Bridge,U448.216
  16. Three-dimensional temperature field acoustic tomographic reconstruction System,TH811
  17. Dry-type air-core reactor temperature field loss and,TM478
  18. Power transformer stray loss and thermal issues related to the calculation and analysis,TM411
  19. Shell and tube heat exchanger heat transfer and structural optimization,TQ051.5
  20. Numerical Simulation Investigation of Local Failure of Steel Box Girders under Blast Loading,U441
  21. Mechanics Behavior about Reinforced Concrete Cylinder of Eccentric Compression under High Temperature Exposure,TU311

CLC: > Transportation > Road transport > Bridges and Culverts > Structural principles, structural mechanics > Stress analysis, thermal stress
© 2012 www.DissertationTopic.Net  Mobile