Dissertation > Excellent graduate degree dissertation topics show

Study on Temperature Effect of Concrete Continuous Box-girder Bridge

Author: QinZuo
Tutor: LiuLaiJun
School: Chang'an University
Course: Bridge and Tunnel Engineering
Keywords: Concrete box girder bridge Temperature field Concrete Temperature effect Temperature stress
CLC: U448.33
Type: Master's thesis
Year: 2009
Downloads: 153
Quote: 6
Read: Download Dissertation

Abstract


Continuous prestressed concrete box girder bridge of a large number of construction , bridge construction and operation of process many issues , especially the temperature cracks caused by temperature stress . Prestressed concrete continuous box girder bridges temperature distribution caused by the temperature effect has caused domestic and international bridge experts and scholars attach great importance . In this paper, the the Wing cents Huai the highway Daqinggou Bridge , its temperature effect , the main work : 1 , according to the theory of heat transfer and solar physics to study the formation of the temperature field of concrete girder bridge three analytical theory, the basic theory of heat conduction , the approximate numerical analysis methods , semi-empirical semi- theoretical formula on three methods of comparative analysis . Fourier heat conduction equation is more consistent than the other two methods of heat exchange conditions of concrete structures in the natural environment , but accuracy depends on the coefficients . The Finite Element approximate numerical division of the accuracy of the analysis unit . Semi-theoretical semi-empirical formula requires a large amount of measured data . To study a variety of thermophysical properties of the concrete indicators and determine the method of pouring concrete temperature , concrete temperature creep stress analysis . Thermophysical properties of the concrete and the pouring temperature is quite different in the actual project . Temperature creep stress analysis should take into account the actual boundary conditions . 3 , consider the different temperature load characteristics analysis of continuous concrete box girder on the lower part of the structure of temperature stress . The bridge structure analysis, temperature effects and the characteristics of the composition of the component materials . Concrete box girder bridge' dissertation">Concrete box girder bridge wide , the roof is completely open , cross-section of vertical and transverse thermal stress . 4 , a finite element calculation model , simulate Daqinggou Bridge construction process . Collection of different times of the day , the stress measured data under different temperature conditions , system temperature difference with the corresponding theoretical calculations , comparative analysis of the two conditions of the temperature gradient of the box girder cross-section , and draw the relevant conclusions .

Related Dissertations

  1. Analysis and Study of Abutment Stability in Concrete High Arch Dam by Three-Dimensional Nonlinear Finite Element Method,TV642.4
  2. Partical Combination of Fine Powder Effect on Performance of Cement and Concrete,TU528.041
  3. Rock-fill Concrete Experiments on Comprehensive Properties and Studies on Thermal Stress,TU528
  4. Experimental Study of Porous Composite Materials on the Base of Recycled Concrete Powder-Cement,TU528
  5. The Experimental Research on Regeneration Aggregate and Proportioning of Recycled Concrete Brick,TU528
  6. Effects of Low Temperature Stress on Blood Physiological and Biochemical Indexes of Oreochromis Hornorum,S917.4
  7. Experiments on Microwave Radiation Activation YunNan Unburned Coal-gangue Concrete,TU528
  8. Recycled aggregate semi- rigid concrete preparation and molding of test,TU528
  9. Analysis of Concrete Durability under Combined Action of Freeze-thaw Cycles and Chloride Ion Erosion,TU528
  10. The Research of Concrete Shrinkage and Creep Experiment,TU528
  11. Construction and Primary Analysis of Differentially Expressed cDNA Library of Alfalfa by Using Suppression Subtractive Hybridization under the High Temperature,S541.9
  12. Rate-dependent Endochronic Damage Constitutive Model for Concrete,TU528
  13. The Research on the Effect of Uniaxial Compressive Load and Mineral Admixtures on Chloride Permeability of Concrete,TU528
  14. Research on Early Age Shrinkage-Cracking Characterization of Concrete with Multi-Components Admixtures,TU528
  15. Experimental Studies on High Temperature Material、 Carbonization and Flexural Behavior of Flexural Member of RAC,TU528
  16. The Large Concrete Hydration Heat Temperature Effects Research of the Cable Stayed Bridge,U441.5
  17. Nonlinear Analysis of the Temperature and Shrinkage Stress of Super-long Reinforced Frame Concrete Structure and Design Measures Research,TU375.4
  18. The Study on the Vestibular 3d Reconstruction of Guinea Pig and the Numerical Simulation of Temperature Field,R764
  19. Study on Ji’an Area Ready-mixed Concrete Rebound Strength Curve,TU528
  20. The Study of Complex Monitoring for Energy Transfer Based on Temperature Field Reconstruction,TU111
  21. Study on the Ductility of Reinforced Concrete Special-shaped Columns with Different Design Parameters,TU375.3

CLC: > Transportation > Road transport > Bridges and Culverts > All kinds of bridges > Bridges: the material points > Concrete bridge
© 2012 www.DissertationTopic.Net  Mobile