顶张式立管液压气动式张紧器的数学模型  

Mathematical Model of Hydro-Pneumatic Tensioner for Top Tensioning Riser

作　　者：陈柏全[1,2] 余杨 余建星[1,2] 徐立新[1] 郝帅[1] CHEN Baiquan;YU Yang;YU Jianxing;XU Lixin;HAO Shuai(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300350,China;Collaborative Innovation Center for Advanced Ship and Deep-sea Exploration,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300350 [2]上海交通大学高新船舶与深海开发装备协同创新中心,上海200240

出　　处：《中国造船》2018年第1期151-160,共10页Shipbuilding of China

基　　金：国家重点基础研究发展计划(973计划2014CB046804);国家自然科学基金重点项目(51239008);国家自然科学基金青年基金(51609169)

摘　　要：以顶张式立管液压气动式张紧器为研究对象,考虑张紧器中的摩擦、活塞和活塞杆的质量以及油管内的压力损失等因素,建立较为完善的张紧器张力的数学模型。通过静力和动力两种加载方式,将论文建立的模型与工程中常用的简化模型作对比研究,对张紧器的影响因素和张力特性进行分析。研究表明,简化模型计算得到的张力较实际张紧器的张力偏大。低压氮气的压力、活塞和活塞杆的重力和惯性力、摩擦力以及油管内的压力损失对张紧器的张力具有重要影响,在张力计算时应恰当地予以考虑。In this paper an improved mathematical model of hydro-pneumatic tensioner for top tensioning riser is derived by consideration of friction,mass of the piston and piston rod,and pressure loss in the piping and so on.The proposed model and simplified models applied in engineering are comparatively studied in static and dynamic loading modes.Results show that the tension computed with linear and nonlinear simplified models is larger than actual tension of the tensioner.Pressure of nitrogen,gravity and inertia force of the piston and piston rod,friction,and pressure loss in the oil piping has important influence on tension characteristics of the tensioner and should be considered in calculation of the tension.

关 键 词：顶张式立管 张紧器 液压气动 数学模型 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]