Dissertation > Excellent graduate degree dissertation topics show

Research on Crack Network of Soil by Fractal Dimension Theory

Author: ChenShangXing
Tutor: WangZuo
School: Hohai University
Course: Geotechnical Engineering
Keywords: cracked soil fractal dimension representative elementary volume fractal interpolation stochastic network
CLC: TU43
Type: Master's thesis
Year: 2006
Downloads: 307
Quote: 7
Read: Download Dissertation

Abstract


The distributing regularities of cracks are fundamentary for the cracked soil mechanics and permeability. It is hard to describe the distributing regularities of cracks which have reticular shape by using the traditional statistical method. It is reasonable to use the theory of fractal dimensions to describe the development of reticular cracks which have fractal characteristics. A method for defining fractal dimensions by photograph is presented in the thesis, which makes the definition of fractal dimensions easy and credible. And the following conclusions are also obtained: the fractal dimension can be used to indicate the development degree of cracks, and the fractal dimensions are increased with the increasing of cracks’ density, cracks’ width and the development degree of secondary cracks.The continuous medium method which widely used in soil is no longer applicable for discontinuous medium such as cacked soil. The equivalent continuous medium model is a widly used model for cracked soil. However, how to determine the size of representative elementary volume is a key problom in the application of the model. By applying the model, it can be found that: the size of representative elementary volume of cracked soil is larger than the size of traditionary test instruments, so it is necessary to use bigger instruments to test the permeability coefficient of cracked soil. The uniformity of crack width and crack density has close relationship with the representative elementary volume.The network analogy of cracked soil is the precondition of numerical simulation and the rationality of the network analogy has direct affection on the credence of numerical simulation. The detailed characters of soil cracks are simulated by the fractal interpolation method and the network of soil cracks are also developed by synthetic use of stochastic network method.

Related Dissertations

  1. Study of Water-Inrush Danger Forecast of Coal Seam Floor Based on Multi Factor’s Fuzzy Clustering Approach,TD745
  2. A Study of Some Analysis Properties for Fractal Interpolation Functions,O174.42
  3. Application Technology Based on the Rock Drillability Stratification Theory,TE21
  4. Fractal Theory and Its Application in Financial Market Analysis,F830.9
  5. The Design of Antennas Based on Fractal Theory and Research of Its EM Radiation Patterns,TN820
  6. Experimental Study on Saturated- Unsaturated Hydraulic Characteristics of a Single Random Crack,TU411
  7. Study of Road Surface Roughness Simulation Based on Fractal Interpolation Function,U461.51
  8. The Research and Implementation of Three-dimension Seabed Terrain Simulation,TP391.41
  9. Study of Modeling Techniques Based on Petri Net and QoS Analysis of Dynamic Workflows,TP311.52
  10. Algorithm and Simulation of Coastline Echo’s Generation in Radar/ARPA Simulator,TN955
  11. A Sort of Fractals Generated from Quasi-affine Maps and the Simulation of the Fractor Constructures in Finacial Markets,O242.1
  12. The Iterated Function System of a Class of Multi-parameter Recursion Fractal Interpolation Surface and Its Box-dimension,O186.1
  13. Discussion of the Fractal Interpolation and Fractal Dimension,TP391.41
  14. The Development and Practice of Solid Resources Reserves Calculation System Based on Fractal Interpolation and Ordinary Kriging,TP311.52
  15. A class of multi-parameter fractal interpolation surface variation and box-counting dimension,O189.1
  16. A Class of Fractal Interpolation Function of Exponential Type,O174
  17. Experimental Study on Fracture and Durability of Recycled High Performance Concrete,TU528
  18. The Experiment of Normal Bond Properties between FRP and Concrete,TU528.572
  19. Generalized Wave Fractal,O189.1
  20. Study on Computer Aid Diagnosis of Mass in Mammogram Base on Bilateral Comparison,TP391.41
  21. Water Level Monitoring and License Plate Location Algorithm Based on Mobile Terminal,TP274

CLC: > Industrial Technology > Building Science > Soil mechanics,foundation engineering > Soil Mechanics
© 2012 www.DissertationTopic.Net  Mobile