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时间:2019-05-31
《广州科学城岩质边坡稳定性可靠度分析》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第25卷增2岩石力学与工程学报Vol.25Supp.22006年10月ChineseJournalofRockMechanicsandEngineeringOct.,2006广州科学城岩质边坡稳定性可靠度分析111,211阙金声,陈剑平,石丙飞,王清,徐佩华(1.吉林大学建设工程学院,吉林长春130026;2.广东省物料实验检测中心,广东广州510080)摘要:边坡稳定性问题是边坡工程最关键的问题,如何研究其稳定性也是岩土工程的重点研究课题。把MonteCarlo法引入边坡稳定性分析和评价中,借助传统的极限平衡理论,建立边坡稳定性分析的极限状态函数。运算过程中采用伪随机数的方法生成服
2、从正态分布的抗剪强度参数随机变量,进而求出边坡安全系数、安全系数的可靠度指标和失效概率。与传统的极限平衡方法相比,可靠性分析可以直观地反映边坡稳定的可靠程度及其失效概率,能为边坡工程支护设计提供更为可靠的参数,同时也能为生产提供指导作用。因此,可靠度分析方法是边坡稳定性评价的有效方法,具有广泛的应用前景。关键词:工程地质;边坡稳定性;可靠度指标;MonteCarlo法;失效概率中图分类号:P642文献标识码:A文章编号:1000–6915(2006)增2–3737–06RELIABILITYANALYSISOFROCKSLOPESTABILITYINGUANGZHOUSCIENCEC
3、ITY111,211QUEJinsheng,CHENJianping,SHIBingfei,WANGQing,XUPeihua(1.CollegeofConstructionEngineering,JilinUniversity,Changchun,Jilin130026,China;2.GuangdongProvinceMaterialTestingCenter,Guangzhou,Guangdong510080,China)Abstract:Theslopestabilityisthemostimportantproblemintheslopeengineering.Howtos
4、tudytheproblemisoneofthemajorsubjectsingeotechnicalengineering.ThewidelyusedMonteCarlomethodisadoptedinthispapertoanalyzeandevaluatethereliabilityofslopestability,whichispopularinthegeotechnicalengineering.Beforethesimulationisperformed,thelimitstatefunctionisestablishedonthebasisoftraditionall
5、imitingequilibriumtheory.Duringthecalculation,theprobabilitytheory,mathematicalstatisticsandsomeothernecessarymathematicalalgorithmsareusedinthecalculationprogram.Thepseudo-randomvariablewillbecreatedbythecomputerprogram,andthenthereliabilityindexandfailureprobabilityofslopecanbefiguredoutbythe
6、MonteCarlosimulationtechnique.AllthecalculationandanalysisprocessesareperformedautomaticallybythecomputerprogramdesignedbyMicrosoftVC++programlanguage.Analyticalresultswillbeoutputintheformofchartsandtables.Thepracticalapplicationinthereliabilityanalysisofrockslopestabilityindicatesthatmoreeffe
7、ctiveinformationabouttheslopestabilitycanbegainedbytheMonteCarlomethod.Theconclusioncanbedrawnthatreliabilityanalysisisanewtrendtotheslopeengineering.Comparedwiththetraditionallimitequilibriummethod,thereliabilityanalysiscandirect
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