某核电站安全壳1:15模型振动台试验

发布时间：2018-05-20 22:30

本文选题：安全壳 + ∶模型　；参考：《工程力学》2014年S1期

【摘要】：安全壳是核电站最后一道安全屏障,其抗震性能受到高度重视。该文根据某核电站安全壳原型结构,依据相似理论并采取一些简化措施,设计了一个相似比为1∶15欠配重的安全壳模型。试验选取El Centro波、Taft波和人工波作为地震动输入。为验证原型安全壳在峰值加速度为0.25g极限安全地震SL-2水平下的抗震安全,进行了峰值加速度分别为0.1g、0.2g和0.3g(相当于原型结构0.088g、0.175g和0.263g)三组工况试验,并且在每组工况前对安全壳模型进行白噪声扫频测试。通过安全壳模型上布置的加速度传感器、位移计和应变片,得到了安全壳模型在三个工况下的动力响应。最后对试验数据进行了分析处理,试验结果表明原型安全壳结构在SL-2水平地震动下仍可保持为线弹性状态,具有充足抗震安全裕量。
[Abstract]:Containment is the last safety barrier for nuclear power plants, and its seismic performance is highly valued. According to the prototype structure of containment in a nuclear power plant, according to the similarity theory and some simplified measures, a containment model with a similar ratio of 1:15 underweight is designed in this paper. El Centro wave Taft wave and artificial wave are selected as the input of ground motion. In order to verify the seismic safety of prototype containment at the peak acceleration of 0.25g limit safe earthquake SL-2 level, three sets of tests were carried out in which the peak acceleration was 0.1g / 0.2g and 0.3g (equivalent to 0.088g / 0.175g and 0.263g for prototype structure), respectively. The white noise sweep frequency of containment model was tested before each working condition. The dynamic response of the containment model under three working conditions is obtained by means of the accelerometers, displacement meters and strain gauges arranged on the containment model. Finally, the experimental data are analyzed and processed. The experimental results show that the prototype containment structure can be kept in a linear elastic state under the horizontal ground motion of SL-2, and has sufficient seismic safety margin.
【作者单位】：哈尔滨工业大学土木工程学院;哈尔滨工程大学航天与建筑工程学院;
【基金】：中央高校科研基本业务费项目(GK2020260123)
【分类号】：TU317.1

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