小水线面船搁浅模式及单点搁浅强度计算  

The Research on the Grounding Mode and Grounding Strength of SWATH

作　　者：陈志坚[1] 袁建红[1] 叶明 陈炜然[1] 

机构地区：[1]海军工程大学船舶与海洋工程系,湖北武汉430033 [2]中国舰船与近海工程设计院,上海200000

出　　处：《中国舰船研究》2006年第3期20-24,共5页Chinese Journal of Ship Research

基　　金：海军"十五"预研项目(401030601)

摘　　要：小水线面双体船(SWATH)的搁浅强度、潜体碰撞性能与防撞设计是SWATH有别于常规船舶的关键技术。通过对SWATH的吃水特性进行研究,指出SWATH深置于水中的潜体极易与海底擦碰或搁浅,引起搁浅强度问题。分析SWATH的自身结构特点、航行与锚泊过程,提出SWATH可能的两个潜体整体搁浅、两个潜体多点搁浅、两个潜体两点搁浅、单个潜体整体搁浅、单点搁浅。对进入每一种搁浅模式的过程进行力学行为分析,将船舶的搁浅过程划分为接触阶段和搁浅阶段。接触阶段一般会使SWATH潜体局部凹陷或破口,亦有可能出现整船性的损伤支柱断裂或显著塑性变形、连接桥断裂或连接桥显著塑性变形等。在搁浅阶段,搁浅处船体被抬升可能造成SWATH整船的结构破坏、局部受损结构的“继续破坏”。研究了SWATH搁浅后保证整船结构完整性和结构不变性的能力、抵抗局部受损结构“继续破坏”的能力。提出应采用的搁浅强度研究方法和思路并对某SWATH实船进行计算。Based on an analysis of the draft characteristic of SWATH, It is pointed out that SWATH will bring grounding strength question as the submerged body of deep draft easily collide with bed or ground on bed. These technologies such as the grounding strength and the capability of collision and anticollision design of SWATH are the key technologies distinguished from conventional ships. The configuration characteristic and the process of sailing and anchoring are fully analyzed. The possible grounding modes of SWATH are the whole grounding of the twin-submerged body, the single submerged body the muhipoint grounding of twin-submerged body and the singlepoint grounding of the single submerged body. Analyzing the mechanic behavior of every grounding mode, we can think the grounding process as contact phase and grounding phase. In the contact phase, SWATH usually is locally damaged ：the submerged body is sunken or come into crevasse, or probably bringabout damage of the whole ship such as the fracture or apparent plastic distortion of the backup post and the cross structure. In the grounding phase, the hull will ascend at the grounding position, the extent of ascending will be enlarged with the decrease of the outboard water line. It will lead to damage of the whole ship or duration damage of local damaged structure . The study of the ability to keep integrality and inflexibility of the whole ship and the ability of resisting the duration damage of local damaged for SWATH structure are emphasized.

关 键 词：SWATH 搁浅模式 结构强度 

分 类 号：U674.941.02[交通运输工程—船舶及航道工程]