核电厂结构竖向隔震理论及设计应用

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (15) : 137-145.

论文

核电厂结构竖向隔震理论及设计应用

韩世界，王长虹

作者信息 +

Vertical isolation theory and design application of nuclear power plant structure

HAN Shijie, WANG Changhong

Author information +

文章历史 +

摘要

为了控制核电工程在地震作用下的竖向振动和摇摆效应，我国第三代CAP1400型核电厂有必要在水平隔震研究的基础上，讨论采用竖向隔震技术的可能性。结合倾斜旋转型三维隔震支座和CAP1400型核电厂的结构参数，提出竖向隔震理论模型，计算核电厂结构的竖向振动、摇摆效应与隔震支座刚度的关系曲线。通过动力分析得到最优的隔震支座布置数量以及空间位置。然后使用ANSYS大型结构有限元软件建立CAP1400型核电厂的三维数值模型进行验证，计算得到的核电厂结构竖向振动加速度、位移和摇摆效应均可满足预定的目标，探索出的计算方法可应用于核电厂结构的竖向隔震设计参考。

Abstract

Here, to control vertical vibration and rocking effect of nuclear power plant under earthquake, it was necessary to explore adopting vertical isolation technologyfor CAP1400 nuclear power plant based on its horizontal isolation study. Combined with structural parameters of the inclined rotating type3-D isolation bearing and CAP1400 nuclear power plant, a theoretical model of vertical isolation for CAP1400 nuclear power plant was proposed to calculate relation curve among vertical vibration, rocking effect and stiffness of isolation bearing. Dynamic analysis was used to obtainthe optimal setting number and spatial locations of isolation bearings. Then, the 3-D numerical model of CAP1400 nuclear power plant was established by using the large-scale structural finite element software ANSYS for verification. It was shown that the calculated vertical vibration acceleration, displacement and rocking effect of the nuclear power plant structure can satisfy the predetermined targets;thecalculation method explored here can be applied in vertical isolation design of nuclear power plant structure as a reference.

导出引用

韩世界，王长虹. 核电厂结构竖向隔震理论及设计应用[J]. 振动与冲击, 2021, 40(15): 137-145

HAN Shijie, WANG Changhong. Vertical isolation theory and design application of nuclear power plant structure[J]. Journal of Vibration and Shock, 2021, 40(15): 137-145

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