论文部分内容阅读
对地处８度地震区的满拉土心墙堆石坝，采用时程分析法，用二维有限元对坝体、坝基、防渗墙进行动力分析。模拟美国的塔夫脱波作用下计算坝体的加速度、自振周期、弹性位移、动剪应力等指标。其结果坝体破坏加速度为０．４２ｇ，而坝顶最大加速度为０．５２ｇ，超过０．４２ｇ范围不大，加之竖向加速度值较小，说明坝顶会有局部坍塌现象，但整个坝体是稳定的。
Based on the time-history analysis method, the dynamic analysis of dam body, dam foundation and cut-off wall with two-dimensional finite element method is carried out. Under the action of Tauboff in the United States, the acceleration, natural period, elastic displacement and dynamic shear stress of dam are calculated. As a result, the failure acceleration of the dam body is 0.42g, while the maximum acceleration at the crest is 0.52g, and the range of more than 0.42g is small, and the value of vertical acceleration is small, indicating that the crest of the dam will be partially collapsed. However, Is stable.