规则波作用下多模块浮桥的水动力性能试验  

Experimental investigation on the hydrodynamics of multi-module connected floating bridge under regular wave action

作　　者：孙建群 姜鹏宇 宋春辉 孙永岗 王德禹[2] SUN Jianqun;JIANG Pengyu;SONG Chunhui;SUN Yonggang;WANG Deyu(The Fifth Scientific Research Institute of Army Research Laboratory,Wuxi 214035,China;School of Naval Architecture,Ocean & Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]陆军研究院五所,江苏无锡214035 [2]上海交通大学船舶海洋与建筑工程学院,上海200240

出　　处：《哈尔滨工程大学学报》2019年第1期162-167,共6页Journal of Harbin Engineering University

基　　金：军内预研项目(30110010401)

摘　　要：为了准确计算多模块浮桥的水动力响应,本文通过水动力模型试验对其在规则波作用下的水动力响应和弯矩分布进行研究。将每个浮桥模块划分为两个子模块,中间通过4根连接梁连接,通过在梁的上下表面布置应变片,测量连接梁的受力,从而获得浮桥的弯矩分布。此外,将浮桥模型视为刚体,基于水动力学理论,对浮桥的弯矩和运动响应进行了分析求解。由于浮桥的弹性变形并不显著,试验结果与数值结果吻合良好,证明了假设的合理性。通过试验研究,可为波浪作用下浮桥的动力响应计算提供基准数据,推动浮桥设计理论的发展。Considering the difficulty of the accurate calculation and analysis of the hydrodynamic response of a multi-module connected floating bridge,a model test was carried out to investigate the hydrodynamic response and bending moment distribution of the floating bridge under regular wave action.Each module of the bridge was divided into two parts,which were connected by four beams.The bending moments can be obtained by installing strain gauges on the upper and lower surfaces of each beam to measure the forces acting on them.Additionally,the floating bridge was regarded as a rigid structure to solve the bending moment and motion responses based on the hydrodynamic theory.The deflection of the floating bridge is not significant;therefore,the results of the measurement agree well with the results of the numerical analysis,indicating that the assumption is reasonable.This experimental investigation can provide basic reference data for the dynamic response calculation of the floating bridge under wave action and thus promotes the theory of floating bridge design.

关 键 词：浮桥 多模块 模型试验 相似理论 规则波 水动力响应 弯矩 垂荡 

分 类 号：TV32[水利工程—水工结构工程] O352[理学—流体力学]