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为提高城市市政管线安全运行的可靠度,根据工程结构可靠性理论,从正态空间中结构可靠度指标β的几何意义出发,将服从任意概率分布的随机变量X_i映射为标准正态随机变量Y_i,建议了管道可靠指标计算的一种优化模型,同时探讨了优化模型在MatLab环境中的实现。最后应用该方法对相关市政管线可靠性进行评价,结果表明得到了满意的结果。
In order to improve the reliability of municipal pipeline safety operation, according to the reliability theory of engineering structure, starting from the geometric meaning of structural reliability index β in normal space, the random variable X_i obeying random probability distribution is mapped to standard normal random variable Y_i , An optimization model of pipeline reliability index calculation is proposed and the realization of optimization model in MatLab environment is also discussed. Finally, this method is used to evaluate the reliability of municipal pipelines, the results show that satisfactory results have been obtained.