基于决策树模型的抗滑桩破坏概率
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摘要
本文以抗滑桩桩顶位移变形和滑坡地表变形为研究目标,采用决策树模型分别构成抗滑桩桩顶设计位移量、实测位移量、滑坡地表破坏概率的三个决策方案枝,以及抗滑桩破坏概率分析决策终结点的决策树概率分析模型。从而建立了一种分析抗滑桩可靠性的判断方法。该方法的特点是将桩顶位移变形特点与滑坡地表宏观变形现象相结合,对抗滑桩的可靠性作出综合判断,其结果更具合理性。
In order to research the displacement of the top of the anti-stide pile and surface deformation of the landslide,this paper introduces decision tree method to build three Decision-making plan branches including designer displacement of the anti-slide pile,the measured displacement,the failure probability of the andslide surface and the probability analysis model of decision tree including decision-making endpoints analyzed by failure probability of anti-slide pile. As a result.,a judgment method to analyze the reliability of anti-slide pile is found. Its specialties are using the deformation features of the top of the anti-slide plie combined with visible deformation phenomenon to estimate the reliability of anti-slide pile synthetically. And its result is more reasonable.
In order to research the displacement of the top of the anti-stide pile and surface deformation of the landslide,this paper introduces decision tree method to build three Decision-making plan branches including designer displacement of the anti-slide pile,the measured displacement,the failure probability of the andslide surface and the probability analysis model of decision tree including decision-making endpoints analyzed by failure probability of anti-slide pile. As a result.,a judgment method to analyze the reliability of anti-slide pile is found. Its specialties are using the deformation features of the top of the anti-slide plie combined with visible deformation phenomenon to estimate the reliability of anti-slide pile synthetically. And its result is more reasonable.
引文
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[2]李铁洪,刘永才.抗滑桩的破坏形态与有限元设计方法[J].中外公路,2009,29(2):36-40.LI Tiehong,LIU Yongcai.The damage form and finite element design method of anti-slide pile[J].Journal of China&Foreign High-way,2009,29(2):36-40.
[3]张建经,刘强.抗滑桩水平地震作用修正系数分析—汶川地震典型抗滑桩破坏工点分析[J].土木工程学报,2012,45(2):89-92.ZHANG Jianjing,LIU Qiang.Seismicanalysis of horizontal seismic coefficient of lateral loadedpile[J],China Civil Engineering Journal,2012,45(2):89-92.
[4]吴永,何思明,李新波.地震波作用下抗滑桩的失效机理[J].四川大学学报(工程科学版),2009,41(3):284-288.WU Yong,HE Siming,LI Xinpo.Failure mechanism ofant-Islide pileunder seismic wave[J].Journal of Si chuan University(Engineering Science Edition),2009,41(3):284-288.
[5]郑章星,林星.抗滑桩失效原因分析[J].铁道标准设计,2001,21(7):41-42.ZHENG zhangxing,LIN xing.Reason analysis of anti-slide pile failure[J].Railway Stand-ard Design,2001,21(7):41-42.
[6]任伟忠,陈浩,唐新建,等.运用钻孔倾斜仪监测滑坡抗滑桩变形受力状态研究[J].岩石力学与工程学报,2008,27(2):3667-3672.REN Weizhong,CHEN Hao,Tang Xinjian,et al.Study on monitoring of deformation and stree state[J].Chinese Journal of Rock Mecha-nics and Engineering,2008,27(2):3667-3672.
[7]JGJ94—2008,建筑桩基设计规范.JGJ94—2008,Code for design of building foundation.
[8]乔建平,杨宗佶.基于KP模型的滑坡破坏概率[J].中国地质灾害与防治学报,2013,24(4):1-5.QIAO Jianping,YANG Zongji.Failure proba-bilities of landslide based on KP model[J].The Chinese Journal of Geological Hazard and Control,2013,24(4):1-5.