重力坝泄洪底孔应力变形有限元分析研究

Study on Stress Deformation Finite Element Analysis for Flood Discharging Bottom Outlet of Gravity Dam

混凝土坝在坝工建设中应用广泛,其泄洪方式是采用坝身孔口泄洪,孔口处混凝土裂缝的产生会影响整体结构的安全稳定性。文章基于有限元分析原理,对重力坝应力应变数值仿真分析选用有限元方法,结合工程实例对泄洪底孔坝段建立三维有限元模型并进行应力应变分析计算,计算结果为评价泄洪底孔的结构稳定性提供了一定的参考价值。

Concrete dam is applied widely in dam construction,the bottom outlet of its dam body is the way to discharge flood,being possible to cause concrete fissure at the outlet,which will influent the safe stability of whole structure. Based on the finite element analysis theory,this paper conducted the stress and strain value simulation analysis with finite element method,combined with a project case,a three dimensional finite element model was established for flood discharging in bottom outlet dam section to conduct stress and strain analysis. The calculated results will provide a certain reference value for evaluating structural stability of bottom outlet for flood discharging.