Dissertation > Excellent graduate degree dissertation topics show

Load Spectrum Complication of Disc Cutter of Full Face Rock Tunnel Boring Machine

Author: BianYe
Tutor: HeXue
School: Northeastern University
Course: Mechanical Design and Theory
Keywords: TBM disc cutter loading spectrum cumulative frequency curve
CLC: U455.3
Type: Master's thesis
Year: 2009
Downloads: 90
Quote: 0
Read: Download Dissertation

Abstract


Fatigue load spectrum is the prerequisite and basis for fatigue calculation and reliability of fatigue. There are many researches of fatigue loading spectrum both at home and abroad, but mostly concentrated on the areas of aviation machinery and bridge. The studies on fatigue load spectrum of disc cutter of TBM are few.Because disc cutter is TBM’s main breaking rock tool, easy to wear and always need to be replaced. It is necessary to study disc cutter’s fatigue life, to reduce the disc cutter replacement period and prolong its fatigue life. In order to study the fatigue life of TBM’s each component and machine, it is very important theoretical significance to work out a wide use value load spectrum of disc cutter of TBM. Considering disc cutter’s actual situation, disc cutter’s work load spectrum is difficult to measure in tunnelling process. So, this task is to write load spectrum of disc cutter of TBM.The main contents in this paper include:(1) Based on the work principle of TBM and characteristics of disc cutter, rock breaking mechanism of disc cutter of Face Rock Tunnel Boring Machine was analyzed, and force analysis method of disc cutter was studied. It established a mechanical prediction model when disc cutter completed a rock breaking.(2) Due to single rock, two mixed rock, three mixed rock conditions, working status and disc cutter loading condition is different.Load calculation method for cutter disc of hob’s arbitrary position is analyzed, and disc cutter’s load value procedure realization is finished.(3) Taking guangzhou subway 4 line of hard rock section as typical examples, the specific conditions of disc cutter detail analysis. In single rock and mixed rock conditions respectively, one point of disc cutter on the certain position of cutter stresses analysis, computer simulation method was applied to realize calculation of loading spectrum of disc cutter by VB in single rock and mixed rock.(4) The load-time course of each working condition is respectively compressed. Through peak counting method is operating statistics counting, then cumulative frequency curve of each working condition is to be drawed, which is synthesized and expanded.Eventually, disc cutter 8 load spectrum can be obtained, which is applied to load simulation experiment.This task is one part of life prediction of TBM’s disc cutter, and the results and methods of this task can be put into indoor simulation experiment very well.

Related Dissertations

  1. Shield tunneling process automatic tracking control technology,U455.3
  2. TBM cutterhead system synchronization driven research,TM921.48
  3. Shield the typical cutter combination rock breaking force characteristics,U455.3
  4. An Analysis on Meshing Performance of Offset Cylindrical Worm Gearing and a Study on Worm Processing,TH132.44
  5. TBM cutterhead mechanical properties and wear resistance sensor development tool,U455.3
  6. The Numerical Simulations of Forces Acting on TBM Disc Cutters with the Consideration of Confining Pressure and Damage in Rocks,U455.3
  7. Studying on Cutting Tool Replacing Cycle of the TB880E Tunnel Boring Machine,U455.31
  8. The Development of the Digitization Prototyping of the Entire Cross Section Mechanical Boring Machine,U455.31
  9. The Development of Double Discgrass Cutter,S817.111
  10. Study of Key Techniques in Developing TBM System and It’s Application,TP311.52
  11. A Study on TBM Method in Super-Long Tunnel Construction,TV554
  12. The Numerical Simulation of TBM Adjacent Tunnel Construction about Overlapped Subway,U455.4
  13. Compilation of Fatigue Loading Spectrum of Flat-Panel Grid Structure with Welding-Hollow Ball under Suspended Crane Loading,TU356
  14. Risk Analysis Theory of Diversion Tunnel TBM Construction and Its Application,TV554
  15. TBM cutterhead aperture ratio and the disk structure optimization design,U455.3
  16. Study on the Construction Technology of TBM Launching Section in Chongqing,U455.43
  17. Full TBM cutterhead Structural Design and Analysis,U455.3
  18. Fatigue Analysis of Resin Sand Technology Cast Steel Bolster and Frame,U270.33
  19. Analysis and Real-time Control on TBM Construction Schedule of Water Conveyance Tunnel,TV554
  20. Finite Element Analysis of Bearing in Segment Erector System for TBM,U455.39
  21. Application of Optimized Maintenance in Power Plant,TM73

CLC: > Transportation > Road transport > Tunnel project > Tunnel construction > Construction machinery
© 2012 www.DissertationTopic.Net  Mobile