›› 2006, Vol. 27 ›› Issue (8): 1429-1432.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Reliability analysis of thawing settlement of permafrost subgrade based on genetic algorithm

QI Chang-qing1, 2, WU Qing-bai3, SHI Bin2, TANG Chao-sheng2   

  1. 1. Research Academy of Hohai University, Nanjing 210098, China; 2. Advanced Computational Engineering Institute for Earth Environment, Nanjing University, Nanjing 210093, China; 3. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
  • Received:2004-10-21 Online:2006-08-10 Published:2013-11-26

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Abstract: On the basis of limit equilibrium equation for thawing settlement of permafrost subgrade, a global optimal algorithm is put forward to calculate the reliability index and failure probability based on genetic algorithm. It can overcome the drawbacks of local optimal wildly existing in classic searching method. By this method, difficulty brought by the transformation of complex performance function can be avoided and nonlinear programming problem can be solved efficiently. Engineering example of Qinghai-Tibet Railway shows that this method is accurate and reliable.

Key words: permafrost subgrade, thawing settlement, genetic algorithm, reliability index, failure probability

CLC Number: 

  • TU 441
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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