核电站工业水池的地震反应分析
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摘要
目的探索核电站工业水池作为抗震物项进行动力计算时的内力分布规律及其危险工况,为工业水池合理截面设计及配筋方案提供技术支持.方法基于大型有限元商业软件开发了工业水池构筑物进行地震反应分析的编码程序,该程序考虑了土-结构动力相互作用,并以黏弹性边界模拟无限地基的影响.结果依据材料力学平截面假定实现了ANSYS三维实体单元应力到内力转化,得到了各种荷载工况作用下工业水池后墙弯矩最大值为101.8 kN.m,相对于反应位移法的计算结果小17%,并通过统计最大内力包络确定了工业水池的危险工况为空水状态与SL2地震波共同作用.结论笔者确定出危险工况下最不利内力的方法比较准确且简单明了,易于工程设计应用.
As a seismic item,internal force distribution and risk case of industry pool in the nuclear power plant is explored while calculating the earthquake responses.The results can provide technical support for the design plan of sectional dimensions and reinforcement.The finite element program of seismic response analysis for industrial pool structures is developed based on commercial software.And soil-structure interaction is simulated by means of adding a viscoelastic boundary in the sides of the model.Based on the plane section assumes of materials mechanics,the transformation between the stress and internal force of three-dimensional solid elements is accomplished.Internal forces distribution and envelope of industrial pools are obtained from the simulation results,the value of the maximum bending moment is 101.8 that is 17% smaller than the calculation results of response displacement method,and then it is determined that the most dangerous case is the combined effects of SL2 seismic waves and empty pool.Based on the calculation results,it can be concluded that the method of determining the worst internal force in the most dangerous case is more accurate and simple,and it is appropriate to grasp.
As a seismic item,internal force distribution and risk case of industry pool in the nuclear power plant is explored while calculating the earthquake responses.The results can provide technical support for the design plan of sectional dimensions and reinforcement.The finite element program of seismic response analysis for industrial pool structures is developed based on commercial software.And soil-structure interaction is simulated by means of adding a viscoelastic boundary in the sides of the model.Based on the plane section assumes of materials mechanics,the transformation between the stress and internal force of three-dimensional solid elements is accomplished.Internal forces distribution and envelope of industrial pools are obtained from the simulation results,the value of the maximum bending moment is 101.8 that is 17% smaller than the calculation results of response displacement method,and then it is determined that the most dangerous case is the combined effects of SL2 seismic waves and empty pool.Based on the calculation results,it can be concluded that the method of determining the worst internal force in the most dangerous case is more accurate and simple,and it is appropriate to grasp.
引文
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[13]裴强,田静,关萍.基于ANSYS实体单元内力计算方法研究[J].华中师范大学学报:自然科学版,2011(4):75-79.(Pei Qiang,Tian Jing,Guan Ping.The method of In-ternal force by ANSYS solid element[J].CentralChina Normal University:Natural Science,2011(4):75-79.)
[14]薛志成,王振清,裴强,等.核电站取水口建筑物的抗震性能分析[J].工业建筑,2012,42(8):69-74.(Xue Zhicheng,Wang Zhenqing,Pei Qiang,et al.Seismic performance analysis of water intake build-ing in a nuclear power station[J].Industrial Con-struction,2012,42(8):69-74.)
[15]王桂萱,陆旭华,赵杰,等.基于反应位移法的现浇钢筋混凝土地下沟道抗震分析[J].世界地震工程,2012,28(4):28-35.(Wang Guixuan,Lu Xuhua,Zhao Jie,et al.Seismicanalysis of grouting-in-place reinforced concrete un-derground channel based on response displacementmethod[J].World Earthquake Engineering,2012,28(4):28-35.)
[2]郭乙木,陶伟明,庄茁.线性与非线性有限元及其应用[M].北京:机械工业出版社,2004.(Guo Yimu,Tao Weiming,Zhuang Zhuo.Linear andnonlinear finite element and its application[M].Bei-jing:China Machine Press,2004.)
[3]水利部长江水利委员会长江勘测规划设计研究院.SL191-2008水工混凝土结构设计规范[S].北京:中国水利水电出版社,2009.(The Yangtze River Water Resources CommitteeYangtze River Survey Planning and Design Institute.SL191-2008 Code for Design of Hydraulic Con-crete Structures[S].Beijing:China Water PowerPress,2009.)
[4]中国水利水电科学研究院.DL5073-2000水工建筑物抗震设计规范[S].北京:中国水利水电出版社,1997.(China Institute of Water Resources and HydropowerResearch.DL5073-2000 Code for Seismic Designof Hydraulic Structures[S].Beijing:China WaterPower Press,1997.)
[5]裴强,薛志成.某核电站循环水泵房结构的地震反应分析[J].世界地震工程,2011,27(3):32-39.(Pei Qiang,Xue Zhicheng.Earthquake response a-nalysis of circulation water pump house in nuclearpower station[J].World Earthquake Engineering,2011,27(3):32-39.)
[6]陈健云,刘金云.输水隧道流-固耦合地震反应研究[J].沈阳建筑大学学报:自然科学版,2006,22(2):242-247.(Chen Jianyun,Liu Jinyun.Study on seismic re-sponse concerning fluid-structure-soil coupling ofwater-supplying tunnels[J].Journal of ShenyangJianzhu University:Natural Science,2006,22(2):242-247.)
[7]柳春光,齐念.考虑流固耦合作用的深水桥墩地震响应分析[J].防灾减灾工程学报,2009,29(4):433-437.(Liu Chunguang,Qi Nian.Seismic response analysisof piers in deep water considering fluid-structure in-teraction[J].Journal of Disaster Prevention and Mit-igation Engineering,2009,29(4):433-437.)
[8]国家地震局.GB50267-97核电厂抗震设计规范[S].北京:中国计划出版社,1997.(State Seismological Bureau.GB50267-97 Codefor seismic design for nuclear power plants[S].Bei-jing:China Planning Press,1997.)
[9]刘晶波,李彬.三维黏弹性静-动力统一人工边界[J].中国科学:E辑,2005,35(9):960-980.(Liu Jingbo,Li Bin.Three-dimensional viscoelasticstatic-dynamic unity of artificial boundary[J].Sci-ence in China Ser.E Engineering&Materials Sci-ence,2005,35(9):966-980.)
[10]刘晶波,谷音,杜义欣.一致黏弹性人工边界及黏弹性边界单元[J].岩土工程学报,2006,28(9):1070-1075.(Liu Jingbo,Gu Yin,Du Yixin.Consistent viscous-spring artificial boundaries and viscous-spring bound-ary elements[J].Chinese Journal of GeotechnicalEngineering,2006,28(9):1070-1075.)
[11]谷音,刘晶波,杜义欣.三维一致黏弹性人工边界及等效黏弹性边界单元[J].工程力学,2007,24(12):32-37.(Gu Yin,Liu Jingbo,Du Yixin.3D consistent vis-coue-spring artificial boundary and viscous-springboundary element[J].Engineering Mechanics,2007,24(12):32-37.)
[12]王国新,李宏男,赵真,等.结构动力反应分析中的地震动输入问题研究[J].沈阳建筑大学学报:自然科学版,2008,24(6):993-998.(Wang Guoxin,Li Hongnan,Zhao Zhen,et al.Studyon ground motion input for structural dynamic analy-sis[J].Shenyang Jianzhu University:Natural Sci-ence,2008,24(6):993-998.)
[13]裴强,田静,关萍.基于ANSYS实体单元内力计算方法研究[J].华中师范大学学报:自然科学版,2011(4):75-79.(Pei Qiang,Tian Jing,Guan Ping.The method of In-ternal force by ANSYS solid element[J].CentralChina Normal University:Natural Science,2011(4):75-79.)
[14]薛志成,王振清,裴强,等.核电站取水口建筑物的抗震性能分析[J].工业建筑,2012,42(8):69-74.(Xue Zhicheng,Wang Zhenqing,Pei Qiang,et al.Seismic performance analysis of water intake build-ing in a nuclear power station[J].Industrial Con-struction,2012,42(8):69-74.)
[15]王桂萱,陆旭华,赵杰,等.基于反应位移法的现浇钢筋混凝土地下沟道抗震分析[J].世界地震工程,2012,28(4):28-35.(Wang Guixuan,Lu Xuhua,Zhao Jie,et al.Seismicanalysis of grouting-in-place reinforced concrete un-derground channel based on response displacementmethod[J].World Earthquake Engineering,2012,28(4):28-35.)
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