船坞虹吸灌水廊道驼峰压强计算及最优半径的确定  

Pressure Calculation for Hump of Siphon Tunnel in Dockyard and Determination of the Optimal Radius

作　　者：白玉川[1] 赵鹏[1] 马金辉[1] 戚晓明[2] 

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072 [2]海洋石油工程股份有限公司,天津300451

出　　处：《天津大学学报》2013年第3期211-216,共6页Journal of Tianjin University(Science and Technology)

基　　金：国家自然科学基金资助项目(50979066)

摘　　要：针对近年来广泛应用的虹吸灌水廊道中的驼峰负压和虹吸段半径.通过在柱坐标系下建立虹吸段水流运动方程,推导出了驼峰断面流速和压强的解析表达式,并用水力模型试验结果验证了压强表达式的准确性.在此基础上提出了廊道虹吸段最优半径的确定方法,对比分析了已有方法得出的最优半径下的断面压强分布,并对某廊道的虹吸段半径进行了优化试验,均验证了最优半径确定方法的有效性.The siphon tunnel has been widely adopted in recent years, and the hump pressure and siphon radius are two important parameters of this kind of tunnel system. The analysis formula of velocity and pressure at hump section were expressed by the siphon flow governing equation built on cylindrical coordinates. The pressure calculated by the formula was consistent with that measured from the model test, which implys that the analysis formula of pressure is correct. A method to determine the optimal radius of siphon section was proposed. Hump pressure in siphon with ra- dius calculated by this method and that with radius calculated by other existing methods were compared, and an op- timization test was conducted on a siphon tunnel. Results indicated that the proposed method to determinate the opti- mal radius is feasible.

关 键 词：船坞 虹吸廊道 驼峰压强 最优半径 

分 类 号：U656.4[交通运输工程—港口、海岸及近海工程]