箱型气浮结构的幅频响应特性分析  

Analysis of Amplitude-frequency Response Characteristics of an Air-floating Rectangular Box

作　　者：刘宪庆[1] 孙涛[2] 别明娟 魏佼琛 

机构地区：[1]后勤工程学院军事工程管理系,重庆401311 [2]后勤工程学院军事土木工程系,重庆401311 [3]后勤工程学院工程技术应用研究院,重庆401311

出　　处：《船海工程》2017年第2期98-102,共5页Ship & Ocean Engineering

基　　金：国家高技术研究发展计划资助项目(2012AA051705);重庆市基础科学与前沿技术研究项目(CSTC2016JCYJA2329);天津大学水利工程仿真与安全国家重点实验室开放基金(HESS-1512);后勤工程学院青年科学基金(YQ-15-420502)

摘　　要：基于线性势流理论和动力学相关理论,考虑箱型气浮结构内部气-水交界面处的非线性边界条件,采用谱分析法对结构在波浪作用下的运动响应进行短期预报和统计,与参考文献对比表明,计算结果合理;垂荡运动位于波能集中段而纵摇运动避开了波能集中段;结构的最大纵摇角小于静稳性曲线产生最大恢复力矩的纵摇角。对于此类结构,可通过在设计中采用合理的分舱设计或尺寸优化,以及在施工中绑缚浮筒、改变拖航的速度和航向的方法避开波能集中段。Based on the linear potential flow theory and dynamics theory, considering the non-linear boundary conditions of air-water interface in the structure of the air floating rectangular box, the short-term prediction for motion responses of structure in wave were taken by the method of spectral analysis. Comparison with reference results, it was shown that the calculation results are reasonable; the period of heave motion is located in wave energy concentration area and the pitch motion avoids the wave en-ergy concentration; the angle of pitch is less than that of the maximum restore moment in static stability curve. The wave energy concentration can be avoided by the way of reasonable compartment design or size optimization in design and pontoon tied or chan-ging the speed and the direction when towing in construction.

关 键 词：箱型气浮结构 附加质量 阻尼 幅频响应特性 

分 类 号：P752[天文地球—海洋科学]