【摘要】 基于等效线性模型,采用有限元法对在建的某水库沥青混凝土心墙堆石坝进行了理论计算,重点研究了大坝在运行期各工况水位下的渗流,以及施工期、蓄水期大坝的应力变形分布,并将理论计算结果与施工期大坝安全监测资料进行了对比分析,对蓄水期大坝渗流、坝体及心墙应力变形进行了预测分析。分析表明:其施工期的理论计算结果与监测资料基本一致。大坝防渗效果较好,沥青混凝土心墙及防渗帷幕起到了主要的阻水作用。坝体应力变形分布规律较为合理,心墙与过渡料及填筑料间能协调变形,工作性态良好,符合土石坝应力变形规律,为下一步水库蓄水验收及蓄水运行提供了科学依据。更多还原

【Abstract】 Based on the equivalent linear model,this paper use finite element method( FEM) to calculate the building asphalt concrete core dam of a reservoir,which focus on the seepage water under various conditions in the running period and the stress-strain distribution in the construction period and storage period,the dam seepage and core stress-strain analysis were predicted in the storage period. The results of calculation are in conformity of monitoring data,anti-seepage measures have good effects,and asphalt concrete core and seepage curtain have important effects on water cut-off. Stress-strain distribution is reasonable,and the asphalt concrete core wall can work properly. Its stress-strain accords with the general stress-strain law of earth-rock dam,providing scientific basis of reservoir storage operating and acceptance in the next stage.更多还原