Dissertation > Excellent graduate degree dissertation topics show

Key Technique Research of Reinforced Soil Retaining Wall

Author: HeHuiTuan
Tutor: ZhaoWeiBing
School: Nanjing Hydraulic Research Institute
Course: Geotechnical Engineering
Keywords: reinforced retaining wall reinforcement mechanism friction characteristics centrifuge model test deformation design method finite element method
CLC: TU476.4
Type: PhD thesis
Year: 2007
Downloads: 485
Quote: 10
Read: Download Dissertation

Abstract


As a new kind of flexible retaining structure, geosynthetic reinforced retaining wall has been widely used in practice. However, the reinforcement mechanism has not been well understood. The current corresponding design methods and analysis theories are far inadequate for practical applications. The existing design methods are generally developed on base of the limit equilibrium state theory to perform the analyses of stabilization. The influence of deformation on reinforced retaining structure has not been well considered. This will absolutely draw back advanced development and application of the reinforced retaining structures.In this thesis, literature review on the existing research of reinforced retaining structure is performed. Then, further study is conducted on the reinforcement mechanism, design method and analysis theory. This thesis includes the following parts:(1) Direct shear test, tensile test and triaxial test are performed to study the reinforcement mechanism and soil-geosynthetic interface behavior. Different fills and reinforced materials are used in the tests. The characteristics of the stress-strain curves are analyzed. Good combination of fills and reinforce materials is suggested for applications.(2) Centrifuge model test is performed as well. The influence of length and spacing of geosynthetics, and the rigidity of the reinforced materials are studied by comparing the deformation behavior of the reinforced retaining structures.(3) Finite element analysis is conducted to assess the influencing factors for the reinforced retaining structure. Good design parameters are suggested. It is also suggested that the soil parameters have an important influence on the behavior of the structures. A deformation controlled design method is suggested.(4) Base on the concept of "equivalent additional stress method", a new finite element is suggested. Geosynthetie material and soils are jointly incorporated in mesh formation. The geosynthetic element has free deformation on each node, which is formulated by means of the deformation of surrounding soil elements so that compatibility of deformation is assured and force is transferred through soils to geosynthetics. The end of the geosynthetics is attached on the retaining structure, thus a composite reinforced retaining structure can be analyzed by finite element.(5) Finally, summary and conclusions are drawn. Further research and some drawbacks are assessed.

Related Dissertations

  1. Research on the Structure and Characteristics of Permanent Magnetic Coupling,TH139
  2. Simulation Analysis on Temperature Stress of RCC Arch Dam and Its Construction Joints Design Research,TV642.2
  3. Stability Analysis of Roller Compacted Concrete Gravity Dam Based on Time-history Method,TV642.2
  4. Rock-fill Concrete Experiments on Comprehensive Properties and Studies on Thermal Stress,TU528
  5. The Research of Technology for 3D Fashion Virtual Distortion and Display,TS941.26
  6. Solid Oxide Fuel Cell ferrite connect the material properties of,TM911.4
  7. Research on Intelligent Aerial Bomb for Forest Fire Fighting,S762
  8. The Influence on the Dimensional Stability and Elastic Deformation Caused by Two Types of Disinfectant Solution to Different Impression Material,R783
  9. Based on Laser Ranging Bunton Displacement Monitoring System Design and Application,TN247
  10. With shape memory alloy (SMA) fiber composite box driven nonlinear deformation of thin-walled beams,TB33
  11. The Construction Monitoring and Deformation Control and Analysis of the Box Culvert Jacking of the YouQuan Road Through the Hukun Railway,U449.5
  12. Study on Construction Deformation Characteristic of Deep Foundation Pit of a Tunnel Working Well,TU753
  13. A Study on the Application of Traditional Module Ideology in Landscape Form Design,TU986
  14. Nonlinear Structural Dynamics Analysis of Naval Gun Extractor Systems,TJ391
  15. Mothods for Utilizing L System Theory to Design Home Textile Simplisim Style,J504
  16. The Band Structure in 2D Resonant Phononic Crystal,O735
  17. The Deformation Law and Its Influnecing Factors of Iron-based Valve Plate in Sintering Process,TF124.5
  18. Study on the Buildings Deformation Around Expansive Soil Foundation Pit,TU443
  19. Research on Sensing with High Birefringent Photonic Crystal Fiber,TP212
  20. Research of Clamp Mechanism Design Process and Properties Based on the Elementary Method,TH21
  21. Research on Characteristics of an Equipment’s Slewing Bearing System in Underwater Pressure Environment,TJ6

CLC: > Industrial Technology > Building Science > Soil mechanics,foundation engineering > Foundation > The basis of the special form > Retaining wall
© 2012 www.DissertationTopic.Net  Mobile