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- STUDY ON METHOD OF DETERMINING FUZZY NATURAL FREQUENCY OF SUBMARINE PIPELINE SPAN 确定海底管线管跨段模糊固有频率的方法
- Study on method for determining fuzzy natural frequency of submarine pipeline span 海底管线悬空段模糊固有频率的计算
- Keywords submarine pipeline span;vortex-induced vibrations(VIV);natural frequencies;dynamic analysis; 海底管跨;涡激振动;固有频率;动态分析;
- submarine pipeline span 海底管跨
- submarine pipeline with free span 悬跨管道
- It is imported from the Yacheng 13-1 gas field off Hainan Island in Southern China via a 780 kilometre high-pressure submarine pipeline. 天然气透过一条长780公里的海底高压管道,直接由海南岛附近的崖城13-1气田输入。
- It is imported from the Yacheng 13-1 gas field off Hainan Island in Southern China via a 780-kilometre high-pressure submarine pipeline. 天然气透过一条长780公里的海底高压管道,直接由海南岛附近的崖城13-1气田输入。
- The application of double wire welding and automatic ultrasonic testing (AUT) in constructing submarine pipeline was introduced. 摘要介绍了双丝焊接技术和自动超声波检测技术在海底管线环焊缝焊接施工中的应用。
- Because of development of offshore oil and gas fields, Submarine pipeline insta-llotion poses a many important problems to study. 随着我国海上油气田的开发,海洋管道技术将成为重要的研究课题。
- Seepage failures of the foundations for sheet-pile and submarine pipeline are typical issues in the hydraulic engineering. 隔水板桩和海底管道地基土体的渗透破坏是两个典型的工程失效问题。
- Double wire welding and automatic ultrasonic testing(AUT) applied in construction of submarine pipeline were introduced. 介绍了双丝焊接技术和自动超声波检测技术在海底管线环焊缝焊接施工中的应用。
- Li Xin, Liu Yakun, Zhou Jing. Experimental study on free spanning submarine pipeline under dynamic excitation,China Ocean Engineering, 2002 (4). 魏建武,李昕,周晶.;混凝土坝新型监测数据处理系统研究,第九届全国水利水电工程青年学术交流会论文集,2002
- The application of double wire welding and automatic ultrasonic testing(AUT) in constructing submarine pipeline was introduced. 介绍了双丝焊接技术和自动超声波检测技术在海底管线环焊缝焊接施工中的应用。
- In order to inspect the pipeline position and quantitate the pipeline settling depth, the single-beam echo sounding technique is used in submarine pipeline inspection. 摘要为查明海底管道的位置和掩埋状态,在海底管道检测中使用了单波束测深技术。
- A submarine pipeline routing in Bohai Sea is quantitatively evaluated dividedly and synthetically with this system.The result of the evaluation agrees with the practice. 应用该系统软件对渤海某海底管道路由风险进行了分项及综合定量评估,其评估结果与实际情况相符。
- Allowable span length of submarine pipeline considering damping 考虑阻尼海底悬跨段管道的动力特性及允许悬空长度
- Vortex-induced vibrations of a submarine pipeline and the concomitant scour around the pipeline with close proximity to an erodible seabed are a complex dynamic interaction between current, pipeline and seabed. 摘要海底管道涡激振动和管道周围海床冲刷是海流-管道-海床之间复杂的动力耦合问题。
- But submarine pipeline often loses its function under abominable working conditions because of corrosion,scour,mechanical damage etc. The security of submarine pipeline has been the question that people have paid close attention to all the time. 但恶劣的工作条件使海底管道经常因腐蚀、波流冲刷、机械破坏等原因而失效;海底管道的安全一直是人们关注的问题.
- AUT has the characters of high efficiency and low costs of testing, which can meet the requirement of time limitation and quality control of welding seam in constructing submarine pipeline. 自动超声波检测技术具有检测效率高和成本低的特点,满足了海底管线铺设时效性要求和焊缝质量控制要求。
- Modern medicine has increased man's life span. 现代医学延长了人的寿命。