Φ1422 mm管线钢管压缩应变容量的有限元分析  

Finite Element Analysis on Compression Strain Capacity of Φ1422 mm Line Pipe

作　　者：王俊[1] 杨明 王琴 王磊 谢萍 杨坤 WANG Jun;YANG Ming;WANG Qin;WANG Lei;XIE Ping;YANG Kun(State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials,CNPC Tubular Goods Research Institute,Xi′an,Shaanxi 710077,China;PipeChina West Pipeline Company,Urumqi,Xinjiang 830011,China)

机构地区：[1]中国石油集团工程材料研究院有限公司,石油管材及装备材料服役行为与结构安全国家重点实验室,陕西西安710077 [2]国家管网集团西部管道有限责任公司,新疆乌鲁木齐830013

出　　处：《石油管材与仪器》2023年第1期83-87,共5页Petroleum Tubular Goods & Instruments

摘　　要：为了评估途经地震带、滑坡带、矿山采空区、沉陷带等特殊区域大口径管线钢管的变形能力,以直径Φ1422 mm大口径普通管线钢管为研究对象,采用有限元方法建立全尺寸管道弯曲模型,研究管道在弯曲载荷作用下的屈曲变形行为,揭示管道外形和壁厚对屈曲行为的影响规律。结果表明,钢管径厚比增加引起局部区域应力集中导致屈曲,增加壁厚可显著提高临界屈曲应变。研究结果可为普通大口径管线钢管在特殊地质环境中的应用提供理论基础。The deformation capacity of steel line pipe was evaluated to provide a theoretical basis for pipeline design in special geological environment such as earthquake zone,landslide zone,mine goaf and subsidence zone,etc.By establishing the bending model of full-size line pipe with diameter ofΦ1422 mm through the finite element method,the buckling deformation behavior of pipeline under external load was investigated to reveal the effect of pipe shape and wall thickness on buckling behavior.Results show that increasing the ratio of diameter to thickness causes local stress concentration and leads to buckling,and increasing the wall thickness significantly improves the critical buckling strain,which lays theoretical foundation for application of tradition large diameter line pipe in special geological environment.

关 键 词：管线钢管 屈曲变形 全尺寸弯曲试验 有限元分析 

分 类 号：TE973.1[石油与天然气工程—石油机械设备]