排序方式: 共有87条查询结果,搜索用时 375 毫秒
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船舶操纵模拟器在港航设计论证上的应用研究 总被引:5,自引:0,他引:5
分析了船舶操纵模拟器在港航设计论证上的应用现状,应用前景及应用范围,并结合具体的实例,探讨了运用船舶操纵模拟器进行港航设计论证的方法。 相似文献
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Ports are marine gateways to economic activities. Ports’ ability to perform services depends on their facilities, harbor conditions, and other factors. Generally, ports have control over their facilities but must compete for funding to improve them. As for waterways, in the U.S., a Harbor Maintenance Trust Fund was established to fund dredging, which levies a 0.125% cargo value tax on most shippers using U.S. coastal and Great Lakes harbors. Yet, commonly, a gross tonnage metric is used to allocate the fund’s resources, resulting in under-maintenance of some harbors. This, reportedly, deters additional port funding and hinders valuable commerce. Supplemental economic metrics, such as value of commerce or cargo, can improve port financing decisions, but such data is not readily available. Container ports collect cargo value data in nominal terms, but bulk ports do not. When making economic decisions, however, real values must be used. Further, when allocating resources, decision-makers must be able to assess ports over time and relative to each other. Conforming to these criteria, this paper develops three port financing indicators based on a real value of cargo and illustrates their calculations using the U.S. Port of Duluth-Superior as a case study. 相似文献
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简述港口外形设计时涉及的水力学和航运的问题,例如港口淤积、入港波浪、水域深度和宽度的限制、港口口门形状、船舶操纵及系泊等问题,提出评价、优化港口设计的方法。 相似文献
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秦皇岛港山海关港区3.5万t级通用泊位续建工程设计波要素分析 总被引:1,自引:0,他引:1
依据秦皇岛海洋站和芷锚湾海洋站多年实测资料,分析了不同重现期的波浪要素,经过地理位置的相关分析和折射影响,用TK-2D的PEM模型确定了工程区域各等深线处的设计波要素,模型可以同时考虑波浪折射、底部损耗、波浪破碎及风等因素对波浪传播的影响。 相似文献