动水压力下渡槽槽身应力与变形规律研究  

On Stress and Deformation of Aqueduct Body under Dynamic Hydraulic Pressure

作　　者：朱强[1] 张硕[2] ZHU Qiang ZHANG Shuo(Changjiang Institute of Technology, Wuhan 430000 , China North China University of Water Conservancy and Electric Power, Zhengzhou 450011 , China)

机构地区：[1]长江工程职业技术学院,湖北武汉430000 [2]华北水利水电大学水利学院,河南郑州450011

出　　处：《浙江水利水电学院学报》2017年第2期15-20,共6页Journal of Zhejiang University of Water Resources and Electric Power

摘　　要：为了研究灌区渡槽在输水过程中槽身的应力分布和变形规律等问题,对U型渡槽结构进行了三维有限元计算分析.基于附加水体质量模型的方法,在考虑动水压力的条件下,通过选取槽身不同断面、同一断面顶部与底部不同部位,分析常水位下槽身的应力与变形规律.研究结果表明:整个渡槽结构的位移变形规律基本符合一般变形规律;槽身顶部大主应力从两端向跨中逐渐递减,小主应力从两端向跨中逐渐递增,底部与之相反,越接近跨中顶部与底部大、小主应力的相差度越大.In order to study the stress distribution and deformation of the aqueduct during the process of irrigation, three-di-mensional finite element analysis of U-shaped aqueduct structure was carried out. Based on the method of additional water quality model, under hydrodynamic pressure, the stress and the deformation regularity of the trough are analyzed by s e le c-ting different sections of the trough or different top and bottom parts of the same section. The results show that the deforma-tion law of the whole aqueduct is basically in accordance with the general deformation law. The main principal stress of the trough is gradually decreasing from the two ends to the cros s , and the small principal stress is gradually increasing from both ends to the span. The closer to the top and bottom of the span, the greater difference it will be between the main and the small stress.

关 键 词：渡槽 动水压力 附加质量 位移变形 主应力 

分 类 号：TV672.3[水利工程—水利水电工程]