计算电站流道垫层结构内水压强分配值的方法  

Method of Calculating the Distribution of Water Pressure on Cushion Structure of Pipeline of Hydropower Station

作　　者：刘静[1] 姚栓喜[1] 孙春华[1] 卫小娟 LIU Jing;YAO Shuan-xi;SUN Chun-hua;WEI Xiao-juan(Power China Northwest Engineering Corporation Limited, Xi’an 710065, China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,西安710065

出　　处：《长江科学院院报》2020年第4期122-126,131,共6页Journal of Changjiang River Scientific Research Institute

摘　　要：明确流道中的垫层结构内水压强分配值在水电站设计中至关重要。结合ANSYS后处理特性,提出了利用有限元软件计算分析外围混凝土、钢板以及有无垫层区内水压强分配值的4种计算方法,即节点应力处理法、截面内力法、节点应力积分法、等效力法,并给出相关验证说明。可针对所计算结构的复杂程度选取相应的计算方法,其中利用等效力法可以求解整体复杂三维模型中钢板和外围混凝土分配值,其操作简单,成果可靠,解决了用简化二维模拟的方法分析整个三维结构各部位分配的内水压强数值的问题。Identifying the values of water pressure distributed on the cushion structure of pipeline is of vital significance in the design of hydropower station.In association with the postprocessing of ANSYS,we present four methods of calculating the water pressure distribution on concrete,steel plate and non-cushioned zone using finite element software.Corresponding calculation method can be selected according to the complexity of the structure to be calculated.Among the four methods,the equivalent force method can be used to calculate the distribution of steel plate and concrete in holistic complex 3D model.Being convenient and reliable,the method solves the problem of analyzing the internal water pressure of the whole structure encountered in simplified 2D simulation.

关 键 词：内水压强 垫层结构 混凝土 钢板 分配值 水电站流道 

分 类 号：TV731[水利工程—水利水电工程] TV732