A Fundamental Research on Development of a New Type Mechanical Connector for Large Scale Floating Structures

大型浮动结构新型机械连接件研制基础研究

基本信息

批准号：
17560715
负责人：
YOSHIDA Koichiro
金额：
$ 2.18万
依托单位：
National Maritime Research Institute
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17560715/
关键词：
large scale floating structure join of units at offshore mechanical connector vacancy transmission of internal forces model tank test VODAC design of connector 外洋建設サイトユニット接合溶接代替接合機械継手開発模型実験空隙充填材

项目摘要

The final stage of construction of a large scale floating structure is join of plural units at site, which are constructed at shipyards on land in advance. When the site is open sea, some kind of mechanical connector is desired to be developed instead of welding. This is due to such a fact that pretty highly accurate pre-control of location and attitude of units is required for accomplishment of welding.The purpose of this research is development of mechanical connector which is useful for construction of units when the weather condition is milder than some upper bound. This mechanical connector is based on an idea which consists of dropping a convex structure part into concave structure part settled at the edges of two units which are going to be joined each other. There a vacancy between the concave structure part and the convex structure part, which is necessary to allow dropping in the condition of sea-state milder than some upper bound. The vacancy should be filled up by some small size spheres made of steel, in other words, steel balls.In the 2005 fiscal year, the relation between size of the vacancy and stiffness of a girder structure connected by the mechanical connector was investigated experimentally. I'm the 2006 fiscal year, a semi-submersible model whose deck girders are connected by the mechanical connectors designed by using knowledge obtained in 2005 was tested in tank. The responses of the semi-submersible model were almost same as those of a model without connectors. Therefore, the mechanical connector proposed has possibility of further development.

大规模浮动结构建设的最后阶段是现场复数单元的联接，这些单元是在船厂提前建造的。当该地点是开海时，希望开发某种机械连接器而不是焊接。这是由于一个事实，即实现焊接需要非常准确的位置和单位态度的预先控制。这项研究的目的是机械连接器的开发，这对于天气状况比某些上限较温和时的设备很有用。该机械连接器基于一个想法，该想法包括将凸结构部分放入凹面结构部分，该部分定居在两个单元的边缘，这些单元将相互连接。凹形结构部分与凸结构部分之间有空缺，这对于允许在海态温和的状态下掉落比某些上限的情况是必不可少的。换句话说，应通过一些小型球形填充空缺。在2005财政年度，空缺的大小与由机械连接器连接的梁结构的刚度之间的关系进行了实验研究。我是2006财政年度，这是一种半套值模型，其甲板大梁是由使用2005年获得的知识设计的机械连接器连接的，在储罐中测试了。半潜可模型的响应与没有连接器的模型的响应几乎相同。因此，提出的机械连接器具有进一步发展的可能性。