长江口岸直水道鳗鱼沙心滩头部守护工程局部冲刷系列水槽试验研究

为维持长江口岸直水道下段目前较为有利的滩槽格局,将在鳗鱼沙心滩头部建造护滩守护工程,需要研究守护工程周边的最大冲刷深度,以确定边缘压石宽度与重点防护部位。采用1∶100与1∶200的系列水槽试验研究护滩工程周围的局部冲刷深度,试验结果表明:局部可能最大冲深6.0 m左右,结果可应用于工程设计。     

对国家应对油污染事故若干措施的建议

文章针对我国当前船舶油污立法的状况和船舶油污事故的现状,对国家应采取的相应措施提出建议,以避免船舶油污事故造成的日益严重的影响。     

长距离双向运行带式输送机改造方案探讨

港口专业化大宗散货码头为满足拓展业务和实际生产作业的需要,往往需要对既有长距离单向运行带式输送机进行双向运行改造,能够在不增加设备数量的情况下提高装卸工艺流程的灵活性,为港口生产作业提供便捷,一机多用提高设备的利用率,降低改造项目投资提升港口经济效益。在长距离双向运行带式输送机设计过程中,选择合理的设计方案,正确的计算驱动电机功率以及胶带张力大小将是保证双向运行带式输送机合理选型及正常安全运行的关键。     

Review of the uncertainties associated to hull girder hydroelastic response and wave load predictions

This paper reviews the importance of uncertainties in hull girder loads influenced by flexible fluid structure interactions. The focus is on developments in the field of hydroelastic modelling, simulation and model tests of practical relevance to the prediction hull girder wave load predictions and their validation. It is concluded that whereas hydroelastic methods for use in design development and assessment become increasingly useful, challenges in realizing and modelling uncertainties can be attributed to: (1) the limitations of numerical methods to suitably model nonlinearities; (2) the ambiguity of model tests; and (3) the systematic use of data emerging from computational, model- or full-scale methods. An approach is recommended to assess the uncertainty in the hydroelastic responses to wave loading and an example is provided to demonstrate the application of the procedure.