多元统计在四筒吸力锚平台气浮拖航模型试验中的应用  

Application of multivariate statistics in model experimental analysis of air cushion towing of 4-suction anchor platform

作　　者：乐丛欢[1,2] 丁红岩[2,3,4] 董国海[1] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,大连116023 [2]天津大学建筑工程学院,天津300072 [3]天津大学水利工程仿真与安全国家重点实验室,天津300072 [4]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：《重庆大学学报（自然科学版）》2011年第10期46-53,共8页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(50079016);天津大学自主创新基金资助项目(60302014)

摘　　要：以四筒吸力锚平台结构为对象,就波浪方向、波高、波周期、航速、吃水深度、系缆点、拖缆长度、后倾角度的不同组合采用1∶20的模型进行拖航试验,测定了不同拖航试验组合下吸力锚平台运动加速度、筒内气压力、筒底水压力以及拖缆力,利用谱系聚类分析,对拖航组合进行分类,将拖航方式的优劣组合划分到不同的类。对测试参数进行因子分析,首先得到参数间的相关矩阵,相关矩阵反映了参数间的相互关系。通过因子分析提取占总方差85%的前6个因子,得到各方案组合的因子得分,找出最危险拖航组合和决定最危险组合的特征力学参数,为实际工程中的拖航提供参考。This paper coducts model tests on a 1∶20 scaled model of four-suction anchor platform.The acceleration,the internal air pressure,the bottom water pressure of the suction anchors and towing force of the suction anchor platform are determined in series of towing combinations with different wave direction,wave velocity,wave period,towing velocity,towing points,towline length and tilt angle.Cluster analyses are used to classify the combinations of towing and factor analyses one used to analyze the mechanical characters.The correlative matrix is obtained which can reflect the correlation of mechanical characters.The factor analysis results show that 85% the total variance is attributed to the former six factors,and the factor scores of the towing combinations was obtained to find the most disadvantageous combinations and the mechanical characters which can lead to the disadvantageous results.The analysis results can be used for consulting the practical application.

关 键 词：吸力锚平台 气浮拖航 模型试验 多元统计 

分 类 号：P752[天文地球—海洋科学]