新型浮式系泊系统靠泊动力响应分析  

Berthing Dynamic Response Analysis of New Floating Mooring System

作　　者：乐丛欢[1,2] 丁红岩[1,2,3] 

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072 [2]天津大学建筑工程学院,天津300072 [3]天津大学滨海土木工程结构与安全教育部重点实验室,天津300072

出　　处：《天津大学学报》2013年第1期51-57,共7页Journal of Tianjin University(Science and Technology)

基　　金：国家高技术研究发展计划(863计划)资助项目(2012AA051705);国家国际科技合作专项资助项目(2012DFA70490);天津大学水利工程仿真与安全国家重点实验室开放基金资助项目

摘　　要：以新型浮式系泊系统为研究对象,通过1∶40的模型试验首先分析无波浪作用下船舶排水量和船速等因素对浮体系泊系统靠泊动力响应的影响,并将浮式系泊系统的靠泊试验结果与相同工况下刚性靠泊试验结果进行对比分析,然后对典型海况(波高2,m,周期6,s,入射角90°的波浪)作用下的新型浮式系泊系统进行靠泊分析,得到其在不同靠泊速度下的动力响应.试验结果表明,相对于刚性靠泊,浮式靠泊的靠泊力小,吸收的能量更大.船速和船舶排水量是影响靠泊动力响应的主要因素,船速和排水量的增大将会大大增加护舷撞击力,并使浮式系(靠)泊平台产生较大的位移.由于偏心的影响,船艏首先系(靠)泊,能量大部分被船艏靠泊平台所吸收,船艉系(靠)泊平台吸能比例很小,尤其当初始靠泊能量较小时,两平台吸能差异更明显.随着船速和船舶排水量增大,船艏和船艉靠泊的时间间隔越小,两系(靠)泊平台位移及护舷撞击合力的差距也越小,船艉系(靠)泊平台吸能比例逐渐增大.A series of berthing tests are conducted on a 1 ： 40 scale model of the new floating mooring system in the non-wave-induced condition to analyze the influence of vessel＇s displacement and berthing velocity and other factors on the dynamic response of the new floating mooring system, and the test results of the new floating mooring are compared with the results of rigid berthing system in the same conditions, and further berthing analysis of the floating mooring system is done by the model tests in the wave with wave height of 2 m, wave period of 6 s and 90~ incident angle to obtain the dynamic response of the floating mooring system with the different berthing velocities. The results show that the impact force is smaller and the absorption of energy is larger in floating berthing compared with those in rigid berthing. Berthing velocity and displacement of the vessel are the main factors of the berthing dynamic response, and the impact force on fenders and displacement of berthing and mooring platform will increase greatly with the increase of berthing velocity and displacement of the vessel. Owing to the uneven distribution of vessel mass, berthing takes place first at bow berthing and mooring platform, most of the energy is absorbed by the bow berthing and mooring platform while the stern berthing and mooring platform absorbs only a very small proportion of the berthing energy. Especially when the initial berthing energy is small, the differences of the two platforms in the energy absorption are more obvious. As the berthing velocity and displacement of the vessel increase, the time inter- val between the bow and stern berthing becomes smaller, the differences of platform displacement and impact force on fender between two berthing and mooring platforms become smaller, and energy-absorbing ratio of stern berthing and mooring platform gradually increase.

关 键 词：浮式系泊系统 模型试验 靠泊速度 撞击力 

分 类 号：P752[天文地球—海洋科学]