大跨度浮体门动力稳定及流激振动试验研究  

Dynamic Stability and Flow-induced Vibration on Giant Floating Body Gates

作　　者：陶小平 应国华 严根华[3,4] 董家 TAO Xiaoping;YING Guohua;YAN Genhua;DONG Jia(Jiangxi Province Ganfu Coccyx Renovate Co.,Ltd.,Nanchang,Jiangxi 330029,China;Zhongtie Hydropowver Planning and Design Group Co.,ILtd.,Nanchang,Jiangxi 330029,China;Ministry of Water Ministry of Transport of the People's Republic of China,National Energy Administration,Nanjing Institute of Water Resources,Nanjing,Jiangsu 210029,China;State Key Laboratory of Hydrology and Water Resources and Water Conservancy Engineering,Nanjing,Jiangsu 210029,China)

机构地区：[1]江西省赣抚尾闾整治有限公司,江西南昌330029 [2]中铁水利水电规划设计集团有限公司,江西南昌330029 [3]水利部交通运输部国家能源局南京水利科学研究院,江苏南京210029 [4]水文水资源与水利工程国家重点实验室,江苏南京210029

出　　处：《水利与建筑工程学报》2022年第6期7-14,共8页Journal of Water Resources and Architectural Engineering

摘　　要：随着我国水闸工程的不断兴建,超大尺寸的泄水闸不断涌现。巨型浮体门也开始应用于超大跨度闸孔的挡泄水运行。由于该型闸门采用浮箱单侧立轴平面旋转型门型,其运行特征与常规直升式或上翻式弧形闸门不同,且需在动水中启闭运行,存在水动力作用和水位雍高等带来的门体振荡、动力稳定等一系列技术难点,因此通过特制的1∶25水弹性振动模型考查不同下泄流量及不同启闭速度下浮体门的振动和稳定性特征。通过闸门结构的水力结构特征试验,系统进行闸门启闭运行的稳定性和安全性研究,获得大闸孔闸门结构在特定条件下的振动加速度、振动位移、刚体晃动量以及闸门支铰力、支铰立轴动态位移等动力参数。揭示浮体门闭门过程中动水流速和自动闭门关系,提出避免出现闸墩碰撞,启闭门钢丝绳全程受力控制等措施。获得了需要严格控制闸孔下泄水流流速流量、降低闸门启闭速度,确保浮体门运行安全性的基本结论。该项研究成果为类似大型泄(挡)水闸工程设计建设提供了参考依据。With the continuous construction of sluice gate projects in China, oversized sluice gates continue to emerge. Giant floating body gates are also beginning to be used for blocking and releasing water in the operation of oversized span gates. Because this type of gate adopts the floating box single side vertical axis plane rotation type gate, its operation characteristics are different from the conventional penning gate or upturned arc gate, and it needs to open and close in the moving water, there are a series of technical difficulties such as oscillation and dynamic stability of the gate brought by the hydrodynamic action and water level, etc. Therefore, the vibration and stability characteristics of the floating body gate under different discharge flow and different opening and closing speeds are investigated through the specially designed 1∶25 hydro-elastic vibration model. Through the hydraulic structural characteristics test of the gate structure, the stability and safety characteristics of the gate opening and closing operation is carried out systematically, and the dynamic parameters such as vibration acceleration, vibration displacement, rigid body sway and gate support hinge force and dynamic displacement of the support hinge vertical axis are obtained for the gate structure of large gate bore under specific conditions. the relationship between dynamic water flow rate and automatic closing in the process of floating body gate closing, and propose measures to avoid collision of gate pier and control the whole force of wire rope of opening and closing gate was revealed. The basic conclusion are as follows. The flow rate of water under the gate bore needs to be strictly controlled to reduce the speed of gate opening and closing, and ensure the safety of floating body gate operation was obtained. The research results could provide a reference basis for the design and construction of similar large drainage(retaining) gate projects.

关 键 词：大跨度浮体门 水动力荷载 闸门稳定性 启闭力 抗振优化设计 

分 类 号：TV663[水利工程—水利水电工程]