Novel Methodologies for Preventing Crack Propagation in Steel Gas Pipelines Considering the Temperature Effect  

作　　者：Nurlan Zhangabay Ulzhan Ibraimova Marco Bonopera Ulanbator Suleimenov Konstantin Avramov Maryna Chernobryvko Aigerim Yessengali 

机构地区：[1]Department of Architecture and Urban Planning,Mukhtar Auezov South Kazakhstan University,Shymkent,160012,Kazakhstan [2]Department of Industrial Civil and Road Construction,Mukhtar Auezov South Kazakhstan University,Shymkent,160012,Kazakhstan [3]Mechanics,Sound,&Vibration Laboratory,Department of Civil Engineering,College of Engineering,National Taiwan University,Taipei,10617,Taiwan [4]Department of Reability&Dynamic Strength,A.Pidhornyi Institute of Mechanical Engineering Problems of National Academy of Sciences of Ukraine,Kharkiv,61046,Ukraine

出　　处：《Structural Durability & Health Monitoring》2025年第1期1-23,共23页结构耐久性与健康监测（英文）

基　　金：funded by the Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan(Grant No.AP19680589).

摘　　要：Using the software ANSYS-19.2/Explicit Dynamics,this study performedfinite-element modeling of the large-diameter steel pipeline cross-section for the Beineu-Bozoy-Shymkent gas pipeline with a non-through straight crack,strengthened by steel wire wrapping.The effects of the thread tensile force of the steel winding in the form of single rings at the crack edges and the wires with different winding diameters and pitches were also studied.The results showed that the strengthening was preferably executed at a minimum value of the thread tensile force,which was 6.4%more effective than that at its maximum value.The analysis of the influence of the winding dia-meters showed that the equivalent stresses increased by 32%from the beginning of the crack growth until the wire broke.The increment in winding diameter decelerated the disclosure of the edge crack and reduced its length by 8.2%.The analysis of the influence of the winding pitch showed that decreasing the distance between the winding turns also led to a 33.6%reduction in the length of the straight crack and a 7.9%reduction in the maximum stres-ses on the strengthened pipeline cross-section.The analysis of the temperature effect on the pipeline material,within a range from-40℃ to+50℃,resulted in a crack length change of up to 5.8%.As the temperature dropped,the crack length decreased.Within such a temperature range,the maximum stresses were observed along the cen-tral area of the crack,which were equal to 413 MPa at+50℃ and 440 MPa at-40℃.The results also showed that the presence of the steel winding in the pipeline significantly reduced the length of crack propagation up to 8.4 times,depending on the temperature effect and design parameters of prestressing.This work integrated the existing methods for crack localization along steel gas pipelines.

关 键 词：Crack propagation finite-element internal pressure PRESTRESSING steel gas pipeline temperature effect 

分 类 号：TG142[一般工业技术—材料科学与工程]