重力坝三维有限元分析

3-Dimension Finite Element Analysis of Gravity Dam

为了全面了解重力坝在静力和动力作用下的受力机理,该文采用三维有限元数值模拟方法对某重力坝坝体及坝基位移场、应力场和坝体开裂效果进行了静动力分析。探讨了在正常运行情况下坝体在静动力作用下的位移场、应力场规律,以及进行地震工况下的坝体动位移、动应力分布和开裂分布规律。评价了坝体在静力和动力工况下的最不利受力情况,为大坝的静力和动力抗震设计提供了依据。

To fully understand the working mechanism of the gravity dam under the static and dynamic actions, the article uses the 3-D finite element numerical simulation method to carry out the static and dynamic analysis on the displacement field of dam body and dam foundation, the stress field and the cracking effect of the dam body of a gravity dam. The article probes into the laws of the displacement field and the stress field of the dam body under the static and dynamic actions under the normal operation condition, and the laws of the dynamic displacement, the dynamic stress distribution and cracking distribution of the dam body under the earthquake condition. The article evaluates the most unfavorable bearing condition of the dam body under the static and dynamic conditions able to provide the basis for the static and dynamic earthquake resistant design.