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时间:2019-05-16
《单层或多层简单土坡的圆弧滑动面的安全系数特征》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、■m蛐I=几=上坐上T王口.泪I苗口,刍,目斌上+由_‘
2、^同^^△万肚仃⋯单层或多层简单土坡的圆弧滑动面的安全系数特征阙金声,方锐,李彦利,刘颖,贾剑(北京国电华北电力工程有限公司北京100120)摘要:在土质边坡稳定性分析中,条分法是实际.X-程中最常用的方法之一。用条分法分析边坡稳定性,关键要解决的一个问题就是确定最危险滑动面,但在实际应用中往往存在两个问题:第一,条分数的多少存在着随意性和经验性;第二,人们搜索最危险滑动面的搜索域范围很大或者根本不包含全局最优解。所以研究条分数对于安全系数的影响以及搜索域内边坡安全系数的特征具有重要的意义。论文中采用Bish
3、owF~-研究常见单层或多层简单土坡的安全系数的特征,得出对于简单土坡的研究成果,即建议条分宽度一般不超过0.5m,最危险滑动面通过坡脚点,安全系数具有很强的规律性,可为实际工程运用提供依据,可为相关规范的修订提供参考。关键词:简单土坡;Bishop';-L-;条分数;安全系数。中图分类号:F642文献标志码:B文章编号:1671-9913(2009)04.0015-04CharacteristicofSafetyCoeficientofDangerousSlidingCircleSurfaceinMonolayerorMultilayerSimpleSoilSlo
4、peQUEJin-sheng,FANGRui,LIYan—li,LIUYing,JIAJian(NorthChinaPowerEegineering(Beijing)CO.,LTD,Beijing100120,China)Abstract:Methodsofsliceswithverticalinterfaceisoneofthecommonusemethodsinthepracticalengineeringinthestabilityanalysisofsoilslope.Onekeyproblemshouldberesolvedistodeterminethe
5、mostdangerousslidingcirclesurfacewhentheMethodsofsliceswithverticalinterfaceisusedtoanalyzetheslopestability.Butthereexiststwoproblemsinthepracticalcalculationandanalysis.Firstly,thereistoomuchofunbendingandexperienceintheselectionofthenumberofslices.Secondly,thesearchbandofthemostdang
6、erousslidingcirclesurfaceisquitelargeortheglobaloptimumsolutionisnotincludedradically.Soitisprovidedwithsignificantmeaningtostudyontheinfluencetothecoeficientofsafetyfromthenumberofslicesandtostudyonthecharacteristicofslopecoeficientofsafetyinthesearchband.TheBishopmethodwasappliedtost
7、udythecharacteristicofcoeficientofsafetyofmonolayerormultilayersimplesoilslopeinthispaper.andgainedthefollowingstudyachievements:thewidthofslicesissuggestednottoexceed0.5m;themostdangerousslidingcirclesurfaceisthroughthebaseofslope;thecoeficientofsafetyisofobviousregularity.Thestudyach
8、ievementsofthispaperThestudyresultofthispapercanprovidereferenceforpracticalengineeringandcanbeconsultedwhencorrelatedstandardsandcodesneedtobemodifiedandreedited.Keywords:simplesoilslope;bishop’Salgorithm;numberofsliceswithverticalinterface;coeficientofsafety.}收稿日期:2009—04—21作者简介:阙金
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