红沿河核电取水隧洞进水口高边坡抗震稳定分析-论文.pdf

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1、第36卷第2期地震工程学报Vol_36NO．22014年6月CHINAEARTHQUAKEENGINEERINGJOURNALJune，2014红沿河核电取水隧洞进水口高边坡抗震稳定分析赵杰，刘道勇，王桂萱(大连大学土木工程技术研究与开发中心，辽宁大连市116622)摘要：以红沿河核电取水隧洞进水口高边坡为背景，介绍了核电工程中边坡抗震稳定分析的原理和分析方法。依次采用滑动面法、静力有限元法和动力有限元法计算该边坡的抗震稳定性，得到其在地震作用下的安全系数及滑动面位置；根据安全系数时程曲线进一步得到边坡最小安全

2、系数和最小平均安全系数。结果表明天然边坡安全系数不满足《核电厂抗震设计规范》的要求，必须进行削坡加固。本文的计算方法和分析成果对于类似核电工程中的高边坡抗震稳定分析具有一定的指导意义和参考价值。关键词：红沿河核电；高边坡；滑动面法；静力有限元法；动力有限元法；安全系数；稳定分析中图分类号：TU435文献标志码：A文章编号：1000—0844(2014)02—0214—06DOI：10．3969／j．issn．1000—0844．2014．O2．0214SeismicStabilityAnalysisofHigh

3、SlopeattheIntakeTunnelofHongyanRiverNuclearPowerZHAOJie，LIUDao—yong，WANGGui—xuanfCiilEngineeringTechnologyResearchandDevelopmentCenter，DalianUniversity，Dalian。Shenyang116622-China)Abstract：SeveralChinesenuclearpowerplantsareinearthquake—proneareas．Thus，slope

4、failuresduetoearthquakescandisruptthenormaloperationofnuclearpowerplants．Seismicdesignsafetycalculationsfornuclearpowerplantstaketheadvantageofcomputationmethodssuchastheslipsurface．thestaticfiniteelement，andthedynamicfiniteelementmethod．Thecurrentnuclearspe

5、c—ificationsrecommendusingthethreedifferentmethodsofanalysisthatsatisfytheregulatoryre—quirementswithoutgivingadditionalguidance．Seismicslopestabilityanalysiswasusedtoexam—inetheintaketunneloftheHongyanRivernuclearpowerplant．Themodelboundaryconditionsforhori

6、zonta1andverticalseismicmotionwereestablished．Whenthelowerboundaryisfixed，thereistheeffectoftheverticaldisplacementonthelateralboundary．Whenthelowerboundaryforthehorizonta1seismicmotionisfixed。thereistheeffectofthehorizontaldisplacementonthetateralboundarv．T

7、heinputseismicdataweretakenfromearthquakeevaluationreports．Thepeakhorizonta1accelerationofthesl一2groundmotionsis0．18g，andtheverticalaccelerationpeakis0．12g．ThesafetyfactorforthehighslopeandslidingsurfacepositionsubjectedtOseismicloadingiscalcu1atedfirstbythe

8、slidingsurfacemethod，andthenbythestaticanddynamicfiniteelementmethods．Furthermore，theminimumsafetyfactorandtheminimumaveragesafetyfactorO±thes1oDeareobtainedaccordingtothehistorycurvesofthesafet