高尾水厂房尾水闸墩三维有限元配筋计算研究

Research on 3D finite element reinforcement calculation for tailrace gate pier of powerhouse with high tail water level

水电站厂房结构因机电设备的布置要求,一般只能设计为薄壁墙体结构,但部分电站尾水水位较高,厂房基底的扬压力也相应较高,从而加大了厂房整体结构、下游挡水结构设计难度和风险,因此非常有必要对厂房下游尾水闸墩及尾水边墙进行结构受力计算,本文结合董箐水电站工程,采用三维有限单元法计算墩墙结构内力,然后采用应力图形法确定结构配筋量,为类似工程提供参考。

Due to the layout requirements of electromechanical equipment,the powerhouse of a hydropower station generally is designed as a thin-walled wall structure.However,the tail water level of some hydropower stations is relatively high,and the uplift pressure on the base of the powerhouse is correspondingly high,which increases the design difficulty and risk of the overall structure and the downstream water retaining structure of powerhouse,so it is very necessary to calculate the structural force of the tailrace gate pier and tail water wall.For Dongqing Hydropower Station project,3D finite element method is used to calculate the internal force of the pier wall structure,and then stress graph method is used to determine the amount of structural reinforcement.