海生物对渤海导管架平台结构性能的影响  

The Effect of Marine Growth on the Structural Performance of Jacket Platforms in Bohai SEA

作　　者：吴景健 戴国华 万军 肖辉 张梦玥 吴梦宁 蒋烜 WU Jing-jian;DAI Guo-hua;WAN Jun;XIAO Hui;ZHANG Meng-yue;WU Meng-ning;JIANG Xuan(Bohai Oilfield Research Institute,Tianjin Branch of CNOOC Ltd.,Tianjin 300452,China)

机构地区：[1]中海石油(中国)有限公司天津分公司渤海石油研究院,天津300452

出　　处：《船海工程》2024年第5期131-136,共6页Ship & Ocean Engineering

基　　金：中海石油(中国)有限公司天津分公司科研项目(ZZKY-2022-TJ-08)。

摘　　要：为分析附着海生物对渤海导管架平台结构性能的影响,以渤海某典型4腿平台为例,结合渤海油田导管架附着海生物现场实测数据,针对不同海生物厚度及密度对导管架结构的影响进行敏感性分析,结果表明,平台所受环境荷载随海生物厚度增加而增大,而海生物密度对环境荷载不产生影响;结构杆件UC值和桩头力随海生物厚度及密度的增加而增大,节点UC值随海生物厚度增加而增大,随海生物密度增加几乎没有变化;平台前三阶自振周期随海生物厚度及密度的增加而小幅增大;疲劳寿命随海生物厚度的增加逐渐降低,且几乎不受海生物密度的影响;平台极限承载力不受海生物的影响。To study the effect of attached marine growth on the structural performance of jacket platform in Bohai Sea,the sensitivity analysis was conducted on one typical 4-legged jacket platform with different marine growth thickness and density,based on the on-site measurement data of marine growth attached to the jacket in the Bohai oilfield.The analysis results showed that the environmental load on the platform increased with the increase of marine growth thickness,while the marine growth density has no effect on environmental loads.The structural UC value and pile head force increased with the increase of marine growth thickness and density.The joint UC value increased with the increase of marine growth thickness,while the joint UC value remains almost unchanged in the case of density.The top three natural period slightly increases with the increase of the thickness and density of marine growth.The fatigue life gradually decreases as the thickness of marine growth increases,and is almost unaffected by density.The ultimate bearing capacity of the platform is not affected by marine growth.

关 键 词：导管架平台 海生物 厚度 密度 自振周期 疲劳寿命 极限承载力 

分 类 号：U674.38[交通运输工程—船舶及航道工程]