摘要
张力腿平台通过张力筋腱与海底连接,从而约束了张力腿平台升沉方向上运动,并在一定范围内限制其水平方向的运动,这种动态载荷是由张力筋腱及其连接器承担的,因此张力筋腱的柔性连接成为张力腿平台研发过程中的关键研究内容之一。目前国内尚缺乏对张力筋腱连接器的研究,因此详细研究了张力腿平台张力筋腱连接器构型,建立张力筋腱顶部连接器锁紧机构的力学模型,通过响应面法对锁定机构的牙型角、齿根厚度、齿顶厚度和分瓣螺母底面夹角等关键参数进行优化,以降低最大等效应力,延长连接器的疲劳寿命,提高连接稳定性。研制张力筋腱底部连接器缩比原理样机,完成张力筋腱底部连接器陆地与水池安装试验,通过试验验证张力筋腱底部连接器构型的合理性。结果表明,经过优化后的顶部连接器性能有明显提升,与优化前相比,最大等效应力降低了26.5%,而接触反力增加了37.4%。底部连接器构型合理,均可以完成张力筋腱的连接要求。
Tension leg platform(TLP) is connected to the seabed by tendons. Thus the movement of TLP in the heave direction is constrained and the horizontal direction movement is limited within a certain range. Then great dynamic tension loads will be supported by the tendons and the connectors. Therefore, the tendon connection becomes one of the key technologies in the TLP R&D process. For lack of relevant studies on the tendon connector, the structural configuration of the tendon connector is studied. The mechanical model of the locking mechanism of the tendon top connector(TTC) is established. The response surface methodology is used to optimize the four parameters of the angle of the tooth, the thickness of the root, the thickness of the tooth tip and the angle of the bottom of the slip nut of the top connector locking structure to reduce the maximum equivalent stress, extend the fatigue life of the connection structure and improve the connection stability. The tendon bottom connector prototype(TBC) is developed. The onshore and pool installation test of the tendon is proposed. The rationality of the TBC structure configuration is verified by the test. The results show that the optimized performance of TTC is significantly improved. The maximum equivalent stress was reduced by 26.5%, while the contact reaction increased by 37.4%. The TBC configuration is reasonable and the connection requirements of tendons can be completed.
作者
王立权
李松羽
弓海霞
刘杭杭
张璐瑶
WANG Liquan;LI Songyu;GONG Haixia;LIU Hanghang;ZHANG Luyao(School of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001;Shanghai Branch of China Ship Science Research Center, Shanghai 200011;Shanghai Marine Diesel Engine Research Institute, Shanghai 201108)
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2019年第18期196-205,共10页
Journal of Mechanical Engineering
基金
国家自然科学基金资助项目(51779064)
关键词
张力腿平台
张力筋腱
顶部连接器
底部连接器
多目标优化
tension leg platform
tendon
tendon top connector
tendon bottom connector
multi-objective optimization
