海上风力发电用SeaStar张力腿平台的结构优化分析  

Structural Optimization Analysis of SeaStar Tension Leg Platform for Offshore Wind Power Generation

作　　者：毕继红[1,2] 周月 关健[1] Bi Jihong;Zhou Yue;Guan Jian(School of Civil Engineering, Tianjin University, 300072, China;Key Laboratory of Coast Civil Structure Safety, Ministry of Education, Tianjin University, 300072, China)

机构地区：[1]天津大学建筑工程学院,300072 [2]滨海土木工程结构与安全教育部重点实验室(天津大学),300072

出　　处：《特种结构》2018年第2期77-82,共6页Special Structures

摘　　要：相比传统钢结构张力腿平台(TLP),钢筋混凝土SeaStar张力腿平台具有更优良的力学性能、运动性能和更低的工程造价,拥有广阔的应用前景。本文基于有限元软件ABAQUS建立SeaStar张力腿平台的三维有限元模型,分析了在0°风向的常风和2m波高的波浪力作用下结构的位移、拉索和平台本体的应力。根据平台本体的应力规律,对平台本体进行结构优化,并对优化前后的结构进行分析对比。研究表明:优化前后短立柱与浮筒下表面相交处皆为结构的最薄弱区域。与优化前的结构相比,优化后结构的位移减小,拉索的应力增加,平台本体薄弱区域的拉、压应力减小。Compared with the traditional steel tension leg platform（ TLP）, the reinforced concrete SeaStar TLP has broad prospects for its low project cost, better mechanical properties and kinematic performance. In this paper, the three dimensional finite element model of SeaStar TLP was established based on ABAQUS. Under 0° direction of wind load and 2 m height of wave force, the displacement of the structure, the stress of the cable and platform body were analyzed. According to the stress law of the platform body, the structure of the platform was optimized, and then the optimized structure was compared with the original structure. The results showed that the short column connected pontoon lower surface is the weakest region of the structure. Compared with the original structure, the displacement of the optimized structure decreased, the cable stress increased,the tensile and compressive stress of the platform weak region reduced.

关 键 词：SeaStar张力腿平台 有限元 薄弱区域 力学性能 运动性能 

分 类 号：P752[天文地球—海洋科学] TM614[电气工程—电力系统及自动化]