压力容器
壓力容器
압력용기
2015年
1期
45-51,56
,共8页
赵潇%朱亚明%廖飞龙%史振灵
趙瀟%硃亞明%廖飛龍%史振靈
조소%주아명%료비룡%사진령
悬空管道%腐蚀缺陷%应变失效准则%深度系数
懸空管道%腐蝕缺陷%應變失效準則%深度繫數
현공관도%부식결함%응변실효준칙%심도계수
suspended pipeline%corrosion pit%strain failure%depth coefficient
以西一线甘肃段某天然气管线为工程背景，由于土壤长期对管道腐蚀性影响及不良地质作用，含有腐蚀缺陷管道意外产生悬空。利用ASME B31G，DNV RP－F101标准和PCORRC方法对在役含腐蚀坑缺陷悬空管道中允许的腐蚀坑缺陷尺寸进行了确定。基于应变失效准则，建立管道在不同地区的失效判别标准，借助Abaqus有限元分析软件，研究含腐蚀坑缺陷悬空管道的失效位置及腐蚀坑缺陷的长度和深度对管道应力、应变、位移和对管道的安全、极限悬空长度的影响，结果表明，腐蚀缺陷深度系数对管道影响较大，当深度系数k1≥0．4后，管道的安全和极限悬空长度急剧减小，管道极易发生失效。
以西一線甘肅段某天然氣管線為工程揹景，由于土壤長期對管道腐蝕性影響及不良地質作用，含有腐蝕缺陷管道意外產生懸空。利用ASME B31G，DNV RP－F101標準和PCORRC方法對在役含腐蝕坑缺陷懸空管道中允許的腐蝕坑缺陷呎吋進行瞭確定。基于應變失效準則，建立管道在不同地區的失效判彆標準，藉助Abaqus有限元分析軟件，研究含腐蝕坑缺陷懸空管道的失效位置及腐蝕坑缺陷的長度和深度對管道應力、應變、位移和對管道的安全、極限懸空長度的影響，結果錶明，腐蝕缺陷深度繫數對管道影響較大，噹深度繫數k1≥0．4後，管道的安全和極限懸空長度急劇減小，管道極易髮生失效。
이서일선감숙단모천연기관선위공정배경，유우토양장기대관도부식성영향급불량지질작용，함유부식결함관도의외산생현공。이용ASME B31G，DNV RP－F101표준화PCORRC방법대재역함부식갱결함현공관도중윤허적부식갱결함척촌진행료학정。기우응변실효준칙，건립관도재불동지구적실효판별표준，차조Abaqus유한원분석연건，연구함부식갱결함현공관도적실효위치급부식갱결함적장도화심도대관도응력、응변、위이화대관도적안전、겁한현공장도적영향，결과표명，부식결함심도계수대관도영향교대，당심도계수k1≥0．4후，관도적안전화겁한현공장도급극감소，관도겁역발생실효。
Taking a segment of Gansu part of West-East Gas Pipeline as the engineering background. Due to the long term impact of soil on the causticity of pipeline and the effects of unfavorable geology,the pipeline with corrosion defects have suspended unexpectedly.Using standard ASME B3 1 G,DNV RP -F101 and PCORRC method on dangling pipeline with corrosion pit containing defects in service to deter-mine allowable corrosion pit defect size.Different parts of the failure criteria is set up by criterion based on the strain failure.With Abaqus,containing corrosion pit defect of suspended pipeline tress,strain,dis-placement,safety and limit suspended length of pipeline on the influence of the depth,length corrosion flaws and failure position is discussed.Results show that the corrosion depth coefficient have a great influ-ence on pipeline.After the depth coefficient k1≥0.4,the safety and limit suspended length of pipeline decreases sharply,pipe prone to failure.
