焊管
銲管
한관
Welded Pipe and Tube
2015年
9期
12-16
,共5页
管道%腐蚀%极限状态方程%失效概率%可靠性分析
管道%腐蝕%極限狀態方程%失效概率%可靠性分析
관도%부식%겁한상태방정%실효개솔%가고성분석
pipeline%corrosion%limit state equation%failure probability%reliability analysis
针对天然气管道存在的腐蚀问题, 可通过腐蚀失效分析方法对天然气管道进行风险评价.依据结构可靠性分析理论, 提出了一种通过腐蚀失效概率模型来描述管道腐蚀失效的方法. 基于极限状态方程, 建立了管道腐蚀失效概率模型. 通过计算管道3种代表性的减薄状态, 并将3个失效概率加权相加得到总的失效概率. 最后通过实际算例证明了该模型的适用性. 该模型为埋地管道失效概率的计算提供了一个可行的方法.
針對天然氣管道存在的腐蝕問題, 可通過腐蝕失效分析方法對天然氣管道進行風險評價.依據結構可靠性分析理論, 提齣瞭一種通過腐蝕失效概率模型來描述管道腐蝕失效的方法. 基于極限狀態方程, 建立瞭管道腐蝕失效概率模型. 通過計算管道3種代錶性的減薄狀態, 併將3箇失效概率加權相加得到總的失效概率. 最後通過實際算例證明瞭該模型的適用性. 該模型為埋地管道失效概率的計算提供瞭一箇可行的方法.
침대천연기관도존재적부식문제, 가통과부식실효분석방법대천연기관도진행풍험평개.의거결구가고성분석이론, 제출료일충통과부식실효개솔모형래묘술관도부식실효적방법. 기우겁한상태방정, 건립료관도부식실효개솔모형. 통과계산관도3충대표성적감박상태, 병장3개실효개솔가권상가득도총적실효개솔. 최후통과실제산예증명료해모형적괄용성. 해모형위매지관도실효개솔적계산제공료일개가행적방법.
Aiming at the corrosion problems existed in natural gas pipeline, it can carry out risk assessment for natural gas pipeline through the corrosion failure analysis method. Based on the analysis theory of structural reliability, a method to describe pipeline corrosion failure was put forward through corrosion failure probability model. A failure probability model of corroded pipeline based on limit state equation was established. By calculating pipe three representative thinning states, and the general failure probability was got by weighting summation of three failure probability. At last, the applicability of the model was proved through the actual example. This model provides a feasible method for calculating buried pipeline failure probability.
