钢悬链式立管出平面运动刚体模态试验研究  

Experimental study of out-of-plane motion of steel catenary riser in rigid mode

作　　者：付雪鹏 黄维平[1] FU Xuepeng;HUANG Weiping(Shandong Key Laboratory of Ocean Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学山东省海洋工程重点试验室,山东青岛266100

出　　处：《海洋工程》2018年第5期114-120,共7页The Ocean Engineering

基　　金：国家自然科学基金项目(51239008);国家级大学生创新创业训练计划项目(201610423121)

摘　　要：钢悬链式立管为深海浮式生产系统油气输送的首选立管。基于钢悬链式立管刚体摆动模型,通过理论分析和模型试验,研究了钢悬链式立管出平面运动的动力学特性,验证了作者此前提出的钢悬链式立管出平面运动的刚体模态特征。研究表明,在海洋环境荷载作用下,波浪力和涡激升力引起的悬链式立管振动不仅有弯曲变形模态,也存在刚体摆动模态。对于钢悬链式立管,刚体摆动将使触地区产生附加弯矩,从而增大了应力、加速了疲劳损伤。Steel catenary riser(SCR)is the preferred riser for the petroleum resource’s import and export.The theoretical analysis and model test based on rigid vibration model are carried out to study the dynamic characteristics of out-of-plane motion of steel catenary riser.The experiment validates the rigid vibration characteristic of SCR’s out-of-plane motion that the author proposed before.The experiment result shows that under the load of ocean environment,the vibration of catenary riser caused by wave force and lift force contains not only the bending mode but the rigid vibration mode.For the simple catenary riser,the rigid vibration causes the additional bending moment in the touch down zone(area around touch down point which is the demarcation point between the suspension section and the flow-line section of the steel catenary riser),which increases the stress and accelerates the fatigue damage.

关 键 词：钢悬链式立管 刚体模态 模型试验 振动测试 出平面运动 

分 类 号：TU317[建筑科学—结构工程] P75[天文地球—海洋科学]