Trial Design of Floating Airport for Next Generation SST

下一代SST浮动机场的试验设计

• 批准号: 07505030
• 负责人: YOSHIDA Koichiro
• 金额: $ 7.36万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07505030/
• 关键词: next generation SST; floating airport; initial plan; semisubmensible; wind lift force; response to landing; 風揚力; 着陸特応答; SST; バ-ジ; セミサブ; 自然環境荷重; アクセス; 係留方式

When construction of the next generation SST is discussed in Japan, it is natural to conclude that it will be installed at the sea because of necessity of very large area, and also due to noise and environmental problems. Therefore, in this report, a large scale floating airport is designed, which is expected to handle 70 million passengers/year and to have superiority in economy, safety and reliability on navigation and passenger controls. This airport is planned to be constructed at the sea whose water depth is 20^-30m off Kuju-Kuri coast and to be managed in combination with existing Narita Airport. Both airports are connected by a high speed railway, a drive way and an airway using VTOLs. The floating airport is also connected by a fixed bridge with land. When these transportation systems are adopted, SST airport will play a role of so called gate airport and Narita airport will play a role of so called hub airport for flying to a number of cities in North-East Asia area. This floating airport consistts of a large scale burge as terminal and apron and four very long semisubmersibles as runways. The burge was analyzed as a rigid floating body supported by two kinds of reclamated artificial islands installed at offshore and nearshore sides, while the runways were analyzed as elastic beams supported at midspan point and at terminal point. In this way, an new design of the next generation SST was shown. In order to make the design more accurate from structural engineering aspect, lift force due to wind was experimentally studied under the condition of simultaneous existence of high waves. Some important informations on evaluation of lift force and on the effects on the design were induced from these experiments. Moreover, foundamental analyzes were made on behaviors of floating airport when airplane is landing.

当日本讨论下一代SST的建设时，很自然地得出的结论是它将安装在海上，因为需要非常大的面积，同时也考虑到噪音和环境问题。因此，本报告设计了一座大型水上机场，预计年旅客吞吐量7000万人次，在航行和旅客控制方面具有经济性、安全性、可靠性等优势。该机场计划建在九重九里海岸水深20^-30m的海域，与现有成田机场合并管理。两个机场均通过高速铁路、车道和使用垂直起降飞机的航线连接。浮动机场还通过固定桥梁与陆地相连。当这些交通系统被采用后，SST机场将发挥所谓的门户机场的作用，而成田机场将发挥所谓的枢纽机场的作用，飞往东北亚地区的多个城市。这个浮动机场由一个大型汉堡作为航站楼和停机坪以及四个很长的半潜式飞机作为跑道组成。汉堡被分析为刚性浮体，由安装在近岸和近岸两侧的两种填海人工岛支撑，而跑道被分析为跨中点和终点支撑的弹性梁。这样，下一代SST的全新设计就被展现出来了。为了使设计从结构工程角度更加准确，在高浪同时存在的情况下，对风产生的升力进行了实验研究。从这些实验中得出了有关升力评估及其对设计影响的一些重要信息。此外，还对飞机着陆时浮动机场的行为进行了基础分析。