衡重式桩板挡墙整体滑移稳定安全系数计算方法
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摘要
采用基于简化Bishop条分法原理的土坡稳定性分析法,假定衡重式桩板挡墙的滑移模式为整体滑移,且整体滑移面为通过桩基底部的圆弧面,推导衡重式桩板挡墙整体滑移稳定安全系数的数值积分公式。使用Matlab软件编制程序,并采用高精度的Quadl积分函数进行积分,求解衡重式桩板挡墙整体滑移稳定安全系数,并以高达14.0m的边坡为例,对为其所做的支护结构-衡重式桩板挡墙进行整体滑移稳定系数计算。计算和监测结果均表明,在不考虑倾覆稳定性的情况下,衡重式桩板挡墙的稳定性非常好。该方法可用于衡重式桩板挡墙的整体稳定性验算。
According to the soil slope stability analysis based on simplified Bishop slice method,with the assumption that the sliding mode of the sheet pile wall with relieving platform was overall sliding and the overall sliding surface was the circular arc surface through the bottom of the pile foundation,the numerical integral formula of the overall sliding stability coefficient of the sheet pile wall with relieving platform was deduced.The program was compiled by Matlab in order to calculate the overall sliding stability coefficient of the sheet pile wall with relieving platform with high precision Quadl integral function.Taking a 14.0 m height slope for example,the sheet pile wall with relieving platform was used as its supporting structure,and the overall sliding stability coefficient was calculated.Both the calculation and monitoring results show that the stability of the sheet pile wall with relieving platform is very good without considering its overturning stability.This method can be used for the checking calculation of the overall stability of the sheet pile wall with relieving platform.
According to the soil slope stability analysis based on simplified Bishop slice method,with the assumption that the sliding mode of the sheet pile wall with relieving platform was overall sliding and the overall sliding surface was the circular arc surface through the bottom of the pile foundation,the numerical integral formula of the overall sliding stability coefficient of the sheet pile wall with relieving platform was deduced.The program was compiled by Matlab in order to calculate the overall sliding stability coefficient of the sheet pile wall with relieving platform with high precision Quadl integral function.Taking a 14.0 m height slope for example,the sheet pile wall with relieving platform was used as its supporting structure,and the overall sliding stability coefficient was calculated.Both the calculation and monitoring results show that the stability of the sheet pile wall with relieving platform is very good without considering its overturning stability.This method can be used for the checking calculation of the overall stability of the sheet pile wall with relieving platform.
引文
[1]胡荣华.衡重式桩板挡墙受力特性及破坏机理的研究[D].北京:中国铁道科学研究院,2011.(HU Ronghua.Study on the Mechanical Behavior and Failure Mechanism for Sheet Pile Wall with Relieving Platform[D].Beijing:China Academy of Railway Sciences,2011.in Chinese)
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[11]戴自航,沈蒲生.土坡稳定性分析简化Bishop法的数值解[J].岩土力学,2002,23(6):760-764.(DAI Zihang,SHEN Pusheng.Numerical Solution of Simplified Bishop Method for Stability Analysis of Soil Slopes[J].Rock and Soil Mechanics,2002,23(6):760-764.in Chinese)
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[13]孔祥,徐流美,吴清.MATLAB7.0基础教程[M].北京:清华大学出版社,1998.
[14]邓薇.MATLAB函数速查手册[M].北京:人民邮电出版社,2010.
[15]刘国楠,顾问天,陈敏华.深圳市金山碧海花园边坡支护工程设计[R].深圳:中国铁道科学研究院深圳研究设计院,2005.
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[2]刘国楠.深圳插花地港鹏新村南侧边坡地质灾害治理工程设计[R].深圳:中国铁道科学研究院深圳研究设计院,2005.
[3]刘国楠,胡荣华,潘效鸿,等.衡重式桩板挡墙上墙土压力研究[J].岩土力学,2011(增2):94-99.(LIU Guonan,HU Ronghua,PAN Xiaohong,et al.The Model Tests of Sheet Pile Wall with Relieving Platform onEarth Pressure of the Upper Part Wall[J].Rock and Soil Mechanics,2011(Supplement 2):94-99.in Chinese)
[4]刘国楠,胡荣华,潘效鸿.衡重式桩板挡墙受力特性模型试验研究[J].岩土工程学报,2013,35(1):103-110.(LIU Guonan,HU Ronghua,PAN Xiaohong.Model Tests on Mechanical Behavior of Sheet Pile Wall[J].ChineseJournal of Geotechnical Engineering,2013,35(1):103-110.in Chinese)
[5]刘国楠,张建民,胡荣华,等.衡重式桩板挡墙整体滑移离心试验研究报告[R].深圳:中国铁道科学研究院深圳研究设计院,2010.
[6]吴天行.土力学[M].冯国栋,译.成都:成都科技大学出版社,1982.(WU Tianhang.Soil Mechanics[M].FENG Guodong,Translated.Chengdu:Chengdu University of Science andTechnology Press,1982.in Chinese)
[7]蒋建清,杨果林.加筋土挡墙地震稳定性分析的水平条分方法[J].中国铁道科学,2009,30(1):36-40.(JIANG Jianqing,YANG Guolin.Horizontal Slice Method for Analyzing the Stability of the Reinforced RetainingWall under Seismic Load[J].China Railway Science,2009,30(1):36-40.in Chinese)
[8]张天宝.土坡稳定性分析和土工建筑物的边坡设计[M].成都:成都科技大学出版社,1987.
[9]陈祖煜.土质边坡稳定分析-原理.方法.程序[M].北京:中国水利水电出版社,2003.
[10]朱大勇,邓建辉,台佳佳.简化Bishop法严格性的论证[J].岩石力学与工程学报,2007,26(3):455-458.(ZHU Dayong,DENG Jianhui,TAI Jiajia.Theoretical Verification of Rigorous Nature of Simplified Bishop Method[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(3):455-458.in Chinese)
[11]戴自航,沈蒲生.土坡稳定性分析简化Bishop法的数值解[J].岩土力学,2002,23(6):760-764.(DAI Zihang,SHEN Pusheng.Numerical Solution of Simplified Bishop Method for Stability Analysis of Soil Slopes[J].Rock and Soil Mechanics,2002,23(6):760-764.in Chinese)
[12]李明,丁德馨.边坡最危险滑动圆弧圆心位置的程序搜索及其应用[J].南华大学学报:自然科学版,2004,18(4):63-66.(LI Ming,DING Dexin.A Method for Searching for the Coordinates of the Center of the Critical Circular SlidingFace and Its Application[J].Journal of Nanhua University:Science and Technology,2004,18(4):63-66.inChinese)
[13]孔祥,徐流美,吴清.MATLAB7.0基础教程[M].北京:清华大学出版社,1998.
[14]邓薇.MATLAB函数速查手册[M].北京:人民邮电出版社,2010.
[15]刘国楠,顾问天,陈敏华.深圳市金山碧海花园边坡支护工程设计[R].深圳:中国铁道科学研究院深圳研究设计院,2005.
[16]中华人民共和国铁道部.TB10025—2006J127—2006铁路路基支挡结构设计规范[S].北京:中国铁道出版社,2007.(The Ministry of Railways of the People’s Republic of China.TB 10025—2006J127—2006Code for Design on Retai-ning Structures of Railway Subgrade[S].Beijing:China Railway Publishing House,2007.in Chinese)
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