结合某核电站泵房半埋置式结构特点，分别分析使用经验公式法和数值分析法计算地震输入的局限性，指出直接采用基岩地表的地震动输入计算半埋置结构往往过大.为此提出一种考虑半埋置效应的地震输入的修正方法.该方法需要已知人工边界处土体节点地震位移和速度，然后通过对地震加速度时程进行积分，得到底层深度处土体速度和位移时程曲线.
Abstract
Considering the actual structural design of a nuclear power’s plant pump house, the semiembeded characteristics and their limitations resulting from empirical formula method and numerical analysis method are respectively studied. The paper points out that the seismic inputs of bedrock surface which directly adopted to calculate the half buried structure are often too large. Therefore, a correction method of earthquake input for the semiembeded structures is presented. The seismic’s displacement and velocity of the artificial border soil node need to be known for this method. The velocity and displacement time course curves of the depth underlying soil are obtained by integrating seismic acceleration time.
关键词
核电工程 /
泵房 /
半埋置 /
地震输入 /
修正方法
Key words
nuclear power engineering /
pump house /
semi-buried structure /
seismic design /
correction method
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参考文献
［1］ 廖振鹏. 工程波动理论导论［M］. 北京: 科学出版社, 2002.
LIAO Zhen-peng. Introduction to engineering wave theory［M］. Beijing: Science Press, 2002.(in Chinese)
［2］ St JOHN C M, ZAHRAH T F. A seismic design of underground structures ［J］. Tunnelling and Underground Space Technology, 1987, 2: 165-197.
［3］郑永来. 地下结构抗震［M］. 上海: 同济大学出版社, 2005.
ZHENG Yong-lai. Anseismic of underground structure［M］. Shanghai: Tongji University Press, 2005.(in Chinese)
［4］MADDALONI1 G, MAGLIULO G, COSENZA E. Effect of the seismic input on nonlinear response of R/C building structures［J］. Adv Struct Eng, 2012(10): 1861-1877.
［5］ TOMASSOLI E, MEZZI M. Energy-based criterion for the selection of the seismic input for inelastic dynamic analyses［C］// 9th US National and 10th Canadian Conference on Earthquake Engineering,2010(7): 2338-2347.
［6］ FU J, KEN J. Seismic performance evaluation of existing R/C asymmetric buildings considering the direction of seismic input［J］. Journal of Structural and Construction Engineering, 2012(4): 565-574.
［7］ MA H , LIU C Y , LI Z B , et al. The influence of seismic input in the oblique direction on the strongcolumn weakbeam mechanism for RC frame［J］. Adv Mater Res, 2011(6): 5144-5155.
［8］ CILINGIR U. A model study on the effects of input motion on the seismic behaviour of tunnels［J］. Soil Dyn Earthqu Eng, 2011(3): 452-462.
［9］ DEEKS A J, RANDOLPH M F. Axisymmetric timedomain transmitting boundaries［J］. Journal of Engineering Mechanics, ASCE, 1994, 120(1): 25-42.
［10］ 胡聿贤, 张裕明. 中华人民共和国国家标准——工程场地地震安全性评价(GB 17742005)［S］. 北京：中国国家标准化管理委员会, 2005.
HU Yu-xian, ZHANG Yu-ming. National standards of the People’s Republic of China seismic safety evaluation of engineering site(GB 17741-2005)［S］.Beijing: China National Standardization Management Committee, 2005.(in Chinese)
基金
国家自然科学基金资助项目（51209046）.
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