核电厂结构地基阻抗函数不同规范采用的计算方法比较分析

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基金项目:

国家科技支撑计划课题（2006BAC13B02）资助

Comparison and Analysis of Calculation Methods Used in Different Codes Concerning Impedance Function of Foundation for Nuclear Power Plants

1. Institute of Engineering Mechanics, China Earthquake Administration, Harbin, 150080, China;
2. Nuclear and Radiation Safety Centre, State Environmental Protection Administration, Beijing, 100082, China

摘要: 利用两种不同的规范方法,对二代加改进核电机组的安全壳结构进行了包括等效弹簧和阻尼系数的阻抗函数的计算分析。研究了不同阻抗函数计算方法在核电厂结构抗震方面应用引起的差异。在考虑地基土剪切波速、泊松比及地基土密度3种影响因素的情况下,分别探讨了每一个地基参数对两种规范方法计算结果的影响,量化了两种规范分析方法对阻抗函数计算结果的差异,验证了地基土剪切波速是影响阻抗函数的关键因素。
- 地基阻抗 /
- 核电厂结构 /
- 阻抗函数 /
- 地基与结构相互作用
Abstract: In this paper, the impendence function of the containment structure of Nuclear Power Plants is calculated by two methods in different codes, and the difference between the two calculation methods for anti seismic characteristics of the structure of nuclear power plants is studied. The effects of each data for foundation on the results from two calculation methods are explored, under the effects of the different Shear Wave Velocity of surrounding rock, Poisson’s ration and Bulk Density of surrounding rock, and the exact different values between the two calculation methods is given. The study shows that the Shear Wave Velocity of surrounding rock is the key factor for the impendence function.
- Impedance of foundation /
- Structure for nuclear power plants /
- Impedance function /
- Foundation-structure interaction