摘要
软岩作为核电地基的适宜性问题主要集中在软岩的地震稳定性分析方面,目前我国还没有成熟的计算方法。论文以某核电项目的现场波速试验和室内动力学试验为基础,获得软岩动力学指标,采用一维等效线性化分析方法对核电软岩场地进行了地震反应分析,得到了初步的地震反应结果。在此基础上,综合前人研究所取得的部分成果,对不同剪切波速区段(350 m/s^950 m/s)的软岩,进行了地震反应计算并进行了归纳,进一步验证了软岩对地震波传播的影响规律,并对地震输入界面进行了探讨,提出对重大工程,取剪切波速850 m/s作为地震输入界面。
Soft rock suitability of a nuclear power plant is focused on the analysis of seismic stability aspects of soft rock. Currently in China, well established and quantified method for this type of calculation still under develop- ment. By adopting the equivalent linearization techniques, using the data from seismic wave testing on site and in- door dynamic testing on an existing nuclear power plant project, initial analysis result has been generated. By using former research result, we have calculated and categorized the seismic responses of soft rock on various shear wave velocity zones （350 m/s ~ 950 m/s）, generalized the pattern of the soft rock for the seismic wave propagation, dis- cussed the Seismic input interface in this study. For major projects, we took shear wave velocity 850 m/s as the seismic input interface.
出处
《地震工程与工程振动》
CSCD
北大核心
2015年第1期44-49,共6页
Earthquake Engineering and Engineering Dynamics
基金
中国电力工程顾问集团公司科技项目(DG1-G01-2009)
中国地震局地震科技星火计划项目(XH15067Y)
关键词
核电厂
软岩地基
动力学特性
地震反应
nuclear power plant
soft rock subgrade
dynamic characteristics
sismic response
