摘要
考虑双河水电站深厚覆盖层及古坐落体地基问题,采用D-P非线性弹塑性本构模型及ANSYS三维有限元软件计算典型工况下三维应力场和位移场,分析结构的稳定性,揭示闸坝区应力分布情况及变形规律。计算得出:4种工况下的变形及应力规律一致,其中完建工况变形及应力水平最大,其次为正常蓄水位工况,然后依次是校核洪水位工况和设计洪水位工况;各工况下闸坝变形量和各坝段间变形差均较小,且与实际监测资料较吻合;各工况下闸坝各向最大正应力和主应力均较小,且闸基绝大部分为压应力,最大压应力小于地基允许承载力;闸室结构变形和应力符合设计要求。
It took Shuanghe Hydropower Station as the research background, considering the deep cover layer and the ancient located body founda- tion problems. By using nonlinear D-P constitutive model, with the ANSYS three-dimensional finite element software, it had proven the typical con- ditions of three-dimensional stress field and displacement field, analyzed the stability of the structure, revealed stress distribution of sluice founda- tion and deformation law of the sluice chamber, evaluated the effectiveness of sluice impervious curtain measures. It obtains from the calculation that in four kinds of conditions of deformation and stress laws are consistent. Finished built deformation and stress level are the largest, followed by normal water level conditions. The final in turn is checking flood operating conditions and design flood conditions. Sluice dam deformation and de- formation difference between the monoliths are both small and agreement with the actual monitoring data. Under various conditions to the maximum normal stress and principal stress are small, and most of the sluice base are compressive stress. The maximum compressive stress is less than the foundation allowed bearing capacity. Gate chamber structural deformation and stress meet the design requirements.
出处
《人民黄河》
CAS
北大核心
2014年第2期115-117,共3页
Yellow River
关键词
闸坝
有限元法
变形
应力
双河水电站
sluice dam
finite element method
deformation
stress
Shuanghe Hydlropower Station
