| 连续埋地管线沉陷情况下可靠度分析 |
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| 引用本文： | 柳春光,冯晓波.连续埋地管线沉陷情况下可靠度分析[J].大连理工大学学报,2011,51(4):581-586. |
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| 作者姓名： | 柳春光 冯晓波 |
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| 作者单位： | 1. 大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024 中建国际设计顾问有限公司,上海200235
2. 中建国际设计顾问有限公司,上海,200235 |
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| 基金项目： | 国家自然科学基金资助项目(50878039); “十一五”国家科技支撑计划资助项目(2006BAJ06B07-04) |
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| 摘 要： | 场地的不均匀沉陷是埋地管线破坏的重要原因之一.运用均值一次二阶矩法和ANSYS中的蒙特卡罗法对埋地管线在地面沉陷位移、材料性能参数、内水压力等随机变量下的可靠度进行计算分析,得到考虑和不考虑管道内水压力时的可靠度系数和失效概率.结果表明,地面沉陷位移的变异性对沉陷区埋地管线的可靠度有着十分重要的影响,与不考虑管道内水压力作用的结果相比,考虑管道内水压力时的失效概率较大,可靠度系数较小;管道壁厚和直径的变异性对沉陷区埋地管线的可靠度也存在着不可忽视的影响.
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| 关 键 词： | 沉陷区 埋地管线 可靠度 一次二阶矩法 蒙特卡罗法 |
Reliability analysis of continuously buried pipeline subjected to settlement |
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| LIU Chunguang,FENG Xiaobo.Reliability analysis of continuously buried pipeline subjected to settlement[J].Journal of Dalian University of Technology,2011,51(4):581-586. |
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| Authors: | LIU Chunguang FENG Xiaobo |
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| Institution: | LIU Chun-guang1,2,FENG Xiao-bo2(1.State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China,2.China Construction Design International,Shanghai 200235,China) |
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| Abstract: | The uneven settlement is one of the important factors which lead to the damage of the buried pipeline.The means first-order second-moment method and Monte-Carlo method in ANSYS are used to calculate the reliability of the buried pipeline considering the random variables,i.e.,displacement of ground settlement,material parameters and internal pressure.Reliability coefficients and failure probabilities considering or without considering the internal pressure are obtained.The results obtained by reliability ana... |
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| Keywords: | settlement zone buried pipeline reliability first-order second-moment method Monte-Carlo method |
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