| 引用本文: |
陈徐均,黄恒,计淞,陈启飞.等效弹性铰接体模拟单个桥节的海上浮桥计算方法[J].陆军工程大学,2022,(1):73-79
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| 等效弹性铰接体模拟单个桥节的海上浮桥计算方法 |
| 陈徐均,黄恒,计淞,陈启飞 |
| (陆军工程大学 野战工程学院 江苏 南京 210007) |
| 摘要:浮桥通常由多个桥节拼组而成，增大单个桥节构型尺寸可以提高其海上拼组架设效率和车辆通行时的安全性。但随着桥节构型的增大，其自身弹性变形更加显著。为了求解一个300 m长的铰接浮桥在波浪中的结构响应特性，提出了一种基于等效弹性铰接的多浮体模型模拟单个桥节的海上浮桥动力响应计算方法。首先，基于弹性基础梁模型和铰接多浮体模型的位移等效处理，求解出由弹性铰连接的多浮体模型中弹性铰的转动刚度；然后，利用ANSYS AQWA软件进行多浮体模型的水动力分析；最终，得到了该浮桥在不同波浪环境中的垂向位移、弯矩、剪力分布特性和系泊系统受力情况。 |
| 关键词: 浮桥 弹性基础梁 多浮体系统 弹性铰 势流理论 |
| DOI：10.12018/j.issn.2097-0730.20211118005 |
| 投稿时间：2021-11-18 修订日期：2021-12-01 |
| 基金项目:工业和信息化部高技术船舶科研资助项目（［2019］357） |
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| Calculating Method of Floating Bridge at Sea Based on a Single Bridge Unit Modeled by Equivalent Multi-floating-body System Connected by Elastic Hinges |
| CHEN Xujun,HUANG Heng,JI Song,CHEN Qifei |
| (College of Field Engineering,Army Engineering University of PLA,Jiangsu Nanjing 210007) |
| Abstract: A floating bridge is usually constructed by several floating bridge units. Increasing the configuration size of the bridge unit can improve the efficiency of assembling work on the sea and the safety of vehicle travelling. However, as the configuration of the bridge unit increases, its elastic deformation becomes more significant. In order to solve the structural response of a 300-meter-long hinge-connected floating bridge under wave loads, a method for calculating the hydrodynamic characteristics of a floating bridge at sea was proposed based on a single bridge unit modeled by equivalent multi-floating-body system connected by elastic hinges. First, based on the displacement equivalent treatment of the elastic foundation beam model and the hinged multi-floating-body model, the elastic hinge rotation stiffness of the floating body beam simulated by the elastic hinge was solved. Then, the ANSYS AQWA software was used to carry out the hydrodynamic analysis of the multi-floating-body model, and finally the vertical displacement, bending moment, shearing force distribution characteristics and the force of the mooring system of the floating bridge in different wave environments were obtained. |
| Key words: floating bridge elastic foundation beam multi-floating-body system elastic hinge potential flow theory |
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