海洋牧场“半潜箱型养殖旅游平台”有限元分析

Finite Element Analysis of“Semi-submersible Box Breeding Tourism Platform”in Marine Ranching

针对我国海洋渔业资源衰退以及传统海水养殖业的污染等问题,利用SESAM分析软件,采用等效设计波法模拟海洋波浪载荷,对该平台结构进行了屈服、屈曲强度校核,旨在为平台的安全使用提供一定的参考依据。结果表明:平台在3种不同工况下,出现最大应力的设计波虽不同,但平台整体的屈服强度仍满足CCS 《海上移动平台入级规范》要求。通过整体的屈服强度分析,得出平台生存吃水时在Sec2011等效设计波海况下,结构应力响应达到最大,因此在中面应力、X向应力、Y向应力以及剪应力分别最大时,对板格和扶强材进行屈曲校核,校核分析显示屈曲强度衡准均小于1.0,可见平台结构屈曲强度满足规范要求。

In view of the decline of Marine fishery resources in China and the pollution of traditional mariculture industry,the SESAM analysis software is used to simulate the ocean wave load by equivalent design wave method to check the yield and buckling strength of the platform structure,in order to provide a certain reference for the safe use of the platform.The results indicate that although the design waves for maximum stress on the platform under three different working conditions are different,the overall yield strength of the platform still meets the requirements of the CCS"Classification Specification for Offshore Mobile Platforms".Through the overall yield strength analysis,it is found that the structural stress response reaches its maximum under the equivalent design wave sea state of Sec2011 when the platform survives at a draft.Therefore,when the mid plane stress,X-direction stress,Y-direction stress,and shear stress are respectively maximum,buckling verification is conducted on the plate lattice and reinforced material.The verification analysis shows that the buckling strength criterion is less than 1.0,indicating that the platform structure′s buckling strength meets the requirements of the specification.