坠落物体产生的冲击荷载对海底管线的损伤分析  

Analysis of the Damage to Seafloor Pipeline by Impact Load from Dropped Objects

作　　者：张海[1] 刘蕊[2] 王秀存[3] 田英辉[1] 

机构地区：[1]天津大学建工学院,天津300072 [2]天津城市建设学院土木工程系,天津300384 [3]天津市房屋鉴定勘测设计院,天津300070

出　　处：《海洋技术》2008年第1期77-80,共4页Ocean Technology

摘　　要：提出了坠落物体产生的冲击荷载对海底管线的损伤一种简易可行的分析方法。对坠落物体进行分类,然后进行运动形式分析,求得冲击速度,根据动力问题控制方程,使用著名商业软件‘ANSYS/LS-DYNA’,‘LS-DYNA’是世界上最著名的通用显式动力分析程序,对实际的工程算例进行了仿真模拟分析。得到的计算结果与已有经验方程结果是基本一致的。该方法可以和一般风险分析方法一起用作海底管线损伤分析和保护措施校核分析。This paper presents the analysis of seafloor pipeline damage sudject to dropped objects from platforms or supply vessels. The objective of this paper is to introduce an easy and applicable approach to investigate the damage induced by impact load from drop weight. Analysis of a practical engineering example is carried out using the wellknown commercial program ‘ANSYS/LS-DYNA＇ ,which is thought to be a powerul tool with an explicit dynamic solver. A rational agreement of the re sults to psevious works is obtained. The suggested procedure in this paper might be taken as a checking analysis of the protec tion measures of pipelines in addition to the general risk assessment method.

关 键 词：海底管线 坠落物体 损伤 冲击荷载 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]