水跃脉动压力作用下隧洞衬砌结构稳定性研究  

Study on Structural Stability of Buried Pipe Lining Under the Action of Hydraulic Jump Pulsating Pressure

作　　者：黄宇强 傅兴安 徐世濠 HUANG Yuqiang;FU Xing'an;XU Shihao(Shenzhen Water Engineering Quality and Safety Supervision Station,Shenzhen 518000,China;Changjiang Survey,Planning and Design Research CO.LTD.,Wuhan 430010,China;National Key Laboratory of Water Resources Engineering and Dispatching,Wuhan University,Wuhan 430072,China)

机构地区：[1]深圳市水务工程质量安全监督站,广东深圳518000 [2]长江勘测规划设计研究有限责任公司,湖北武汉430010 [3]武汉大学水资源工程与调度全国重点实验室,湖北武汉430072

出　　处：《河南水利与南水北调》2023年第12期108-109,共2页Henan Water Resources & South-to-North Water Diversion

摘　　要：水工输水隧洞在靠近泵站处易发生管道水跃,此时管道内水流流态复杂,可能引起埋管共振,导致衬砌结构破坏。文章利用ABAQUS有限元计算软件对钢衬管道在水跃脉动压力作用下的特征频率进行计算,研究钢管的自振特性;并在此基础上对钢管水跃脉动压力作用工况进行瞬态响应分析,探究水跃脉动压力对钢管衬砌结构位移和应力状态的影响,并分析脉动压力参数的影响规律。Pipe jumps are often seen at pumping stations near hydraulic tunnels.At this time,the water flow in the pipe is complex,which may even cause the resonance of the buried pipe and lead to the damage of the lining structure.In this paper,ABAQUS Finite Element Calculation Software is used to calculate the eigenfrequency of steel pipe under the action of hydrodynamic pulsation pressure.The natural vibration characteristics of steel pipe are studied.On this basis,the transient response of the hydraulic jump pressure of the steel pipe is analyzed.The influence of hydraulic jump pressure on the displacement and stress state of the steel pipe lining structure is explored.In addition,the influence law of the pulsating pressure parameters is analyzed.

关 键 词：隧洞衬砌 水跃 脉动压力 有限元计算 

分 类 号：TV314[水利工程—水工结构工程]