摘要
地震作用下核电取水导流堤的稳定性对核电安全用水起到至关重要作用。采用等效线性方法对某核电厂导流堤工程典型断面开展有限元动力时程分析,分别得到SL1、SL2地震动作用下导流堤的加速度响应、液化区分布、安全系数。在此基础上考虑到岩土体参数的离散性和随机性,分析了岩土体动剪切模量变化对导流堤的动力稳定性影响。结果得出了动剪切模量的变化与加速度响应、液化区分布、安全系数之间的规律。成果对类似工程抗震设计具有一定的参考价值和指导意义。
The stability of the nuclear power intake diversion dike under the action of earthquake plays a vital role in the safe use of nuclear power. In this paper,the equivalent linear method is used to carry out the finite element dynamic time history analysis of the typical section of the dike works of a nuclear power plant,and the acceleration response,liquefaction zone distribution and safety factor of the diversion dike under SL1 and SL2 ground motion are obtained respectively. By considering the discreteness and randomness of geotechnical parameters,the influence of dynamic shear modulus changes on the dynamic stability of diversion dikes is analyzed,and the variation and acceleration of dynamic shear modulus are obtained,as well as response liquefaction zone distribution,safety factor.
作者
刘博清
赵杰
王桂萱
LIU Boqing;ZHAO Jie;WANG Guixuan(The R&D Center of the Civil Engineering Technology,Dalian University,Dalian,Liaoning 116622,China)
出处
《水利与建筑工程学报》
2019年第4期165-171,共7页
Journal of Water Resources and Architectural Engineering
基金
国家自然科学基金面上项目(51678100)
辽宁省自然科学基金指导计划(20170540043)
辽宁省教育厅项目(L2015035)
关键词
导流堤
动力响应
加速度
液化
安全系数
敏感性分析
dike
dynamic response
acceleration
liquefaction
safety factor
sensitivity analysis
