小湾拱坝蓄水期应力应变性态分析

应用变形法对某高拱坝坝踵应变计组进行了应力计算，采用统计模型分离了影响应力的各个分量，分析了蓄水期前后应力变化规律和主要影响因素，比较了相同水位下应力变化情况，结果表明：坝踵处水压分量是影响应力的主要因素，在水位抬升的过程中，压应力减小，坝踵处应力性态总体正常。

Analysis on stress-strain behavior of Xiaowan Arch Dam during impounding period

With deformation method,a stress calculation is made on the strain gauge set in the heel of Xiaowan Arch Dam;in which all the components those impact the stress therein are separated with a statistical model and the stress change law and the main impacting factors before and after the impounding period are analyzed along with the comparison made no the change of stress under the condition of the same water level.The result shows that the component of the water pressure at the heel is the main impacting factor for the stress,and then the compressive stress is to be decreased and the stress behavior at the heel is to be normal generally during the raising of the water level.