移动载荷作用下柔性连接浮桥的运动响应研究  

Study of Motion Responses of Flexibly Connected Floating Bridge under Moving Loads

作　　者：计淞 陈徐均 刘俊谊 黄恒 陈兮 苗玉基 JI Song;CHEN Xujun;LIU Junyi;HUANG Heng;CHEN Xi;MIAO Yuji(College of Field Engineering,Army Engineering University of PLA,Nanjing 210007,China;Taihu Laboratory of Deepsea Technological Science,Wuxi 214082,China)

机构地区：[1]陆军工程大学野战工程学院,南京210007 [2]深海技术科学太湖实验室,无锡214082

出　　处：《中国造船》2024年第2期216-224,共9页Shipbuilding of China

基　　金：国家自然科学基金面上项目(52371300);江苏省基础研究计划自然科学基金(青年基金)项目(BK20220221)。

摘　　要：为了研究柔性连接浮桥在移动载荷作用下的运动响应特性,基于多体动力学Kane方法,建立了桥节间通过缆绳和防撞垫连接的柔性连接浮桥水动力分析模型,并开发了相应的计算程序。利用商用软件AQWA验证了所建模型的合理性,进而研究了不同载荷和连接缆绳刚度下浮桥的运动响应。相关计算结果表明:浮桥的垂向位移随载荷的增大而增大,随连接缆绳刚度的增大而减小;通行载荷主要影响浮桥的下沉位移,而调整连接缆绳刚度可以有效控制浮桥的上翘位移;在浮桥通载的过程中应重点关注水侧的端部桥节。In order to study the motion response characteristics of the flexibly connected floating bridge under the moving loads,the hydrodynamic analysis model of the flexibly connected floating bridge,which is connected by the cables and fenders,is established based on the Kane method,and the corresponding computational program is developed.The correctness and accuracy of the model were verified by using the commercial software AQWA,and then the motion responses of the floating bridge were studied under different load weights and stiffnesses of the connecting cables.The results show that:the vertical displacements of the floating bridge increase with the moving load weight,and decrease with increased cable stiffness.The load weight primarily influences the sinking displacements of the floating bridge,while adjusting cable stiffness can effectively control the upward displacements.Particular attention should be focused on the end of the water side of the pontoon during the moving load process.

关 键 词：柔性连接浮桥 移动载荷 运动响应 KANE方法 时域分析 

分 类 号：U661.31[交通运输工程—船舶及航道工程]