摘要
[目的]为了校核极限挖掘工况下海缆埋设犁强度,指导埋设犁挖掘作业安全开展,[方法]基于土壤弹塑性本构方程,采用ABAQUS对埋设犁最大工作水深、不同挖掘深度工况下力学响应进行数值仿真计算,研究砂石土壤不同深度埋设犁下部犁刀、犁沟地面、犁刀正面和犁沟顶面的应力分布,校核关键结构强度,分析牵引力随挖掘深度的变化规律。[结果]结果表明埋设犁各关键结构的应力强度均在许用值内,但在局部区域易出现应力集中现象,牵引力随着挖掘深度的增大而增加,整体呈现幂函数规律。[结论]研究结果可为海缆埋设犁结构设计及工作控制提供参考。
[Purpose]In order to calibrate the strength of submarine cables buried in extreme digging conditions,and to guide the excavation of buried ploughs to be carried out safely.[Method]The methods employed are based on the elastic-plastic constitutive equation of soil,with numerical simulation calculations carried out by using ABAQUS to calculate the mechanical response of buried ploughs in The maximum working depth of water and under the conditions of different digging depths,and to study the stress distributions of the lower part of the buried ploughs of different depths in sandy and gravel soils with regard to the blade of the plough,the floor of the plough furrow,the front part of the blade of the plough,and the top surface of the plough furrow.The study encompasses the stress distribution of the lower plough blade,the front surface of the plough blade,and the top surface of the plough furrow at varying depths of sand and gravel soil.It involves the assessment of the strength of the key structure and the analysis of the change rule of traction force with the digging depth.[Result]The results demonstrate that the stress intensity of each key structure of the buried plough is within the permissible value.However,the phenomenon of stress concentration in the local area is evident,and the traction force increases with the increase of digging depth,exhibiting a power function law.[Conclusion]The results provide a reference for the structural design and work control of the buried plough of submarine cable.
作者
胡德芳
苏波泳
HU Defang;SU Boyong(Liaoning Branch,China Three Gorges New Energy(Group)Co.,Ltd.,Shenyang 110011,China;School of Mechanical Engineering,Nantong University,Nantong 226019,Jiangsu,China)
出处
《船舶工程》
北大核心
2025年第S1期42-45,共4页
Ship Engineering
基金
江苏省自然科学青年基金(BK20240952)。
关键词
海缆
埋设犁
牵引力
强度校核
submarine cable
buried plow
traction force
strength checking
