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

QI Chang-qing; WU Qing-bai; SHI Bin; TANG Chao-sheng

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

更新时间：2026-06-25

- Reliability analysis of thawing settlement of permafrost subgrade based on genetic algorithm
- Vol. 27, Issue 8期　刊出日, (2006)
- 作者机构：
  
  1. 河海大学科学研究院,南京,210098
  2. 南京大学地球环境计算工程研究所,南京,210093
  3. 中国科学院寒区旱区环境与工程研究所,兰州,730000
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU441
- Online First：26 November 2013，
  
  Published：2006
- 稿件说明：
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QI Chang-qing, WU Qing-bai, SHI Bin, et al. Reliability analysis of thawing settlement of permafrost subgrade based on genetic algorithm[J]. 2006, 27(8期　刊出日).
DOI：

QI Chang-qing, WU Qing-bai, SHI Bin, et al. Reliability analysis of thawing settlement of permafrost subgrade based on genetic algorithm[J]. 2006, 27(8期　刊出日). DOI：

摘要

在冻土路基融沉变形极限状态方程的基础上，从可靠度指标的几何涵义出发，提出了基于遗传算法的冻土路基融沉可靠度指标和失效概率的计算方法。该法是一种全局优化算法，能有效克服传统搜索算法易陷入局部极小值的缺点，不需要对功能函数进行直接转换，避免了功能函数比较复杂时所带来的求解困难，特别适合求解非线性规划问题。以青藏铁路冻土路基的具体实例，验证了本方法的准确性和有效性

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.

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Related Author

QI Chang-qing1

WU Qing-bai3

SHI Bin2

TANG Chao-sheng2

ZHOU Jing

YAN Bin

LIANG Bing

JIANG An-nan

Related Institution

Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences

Advanced Computational Engineering Institute for Earth Environment,Nanjing University

College of Water Conservancy, Shenyang Agricultural University

School of Civil and Hydraulic Engineering, Dalian University of Technology

Department of Mechanics and Engineering Sciences, Liaoning Technical University

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