静力无衬砌黄土隧洞稳定性探讨
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摘要
强度折减法和具有拉和剪破坏分析功能的大型有限差分程序FLAC相结合,并将其引入到静力隧洞的稳定性分析中。首先对黄土无衬砌隧洞静力破坏机制进行了数值分析,在此基础上进行了一个简单的隧洞静力模型试验,数值分析结果在静力模型试验中得到了验证,同时说明FLAC强度折减法能够用于隧洞静力稳定分析,进而计算得到隧洞静力稳定安全系数。为下一步黄土隧道的地震反应分析和有衬砌黄土隧道动力稳定性分析奠定了基础,也为隧道修建和运营期间的稳定性提供了依据。
Strength reduction method is combined with large-scale finite difference code FLAC containing the tension and shear failure analysis,and it is introduced into the static stability analysis of tunnel.First,a numerical analysis was conducted on the loess unlined tunnel static failure mechanism,then,on this basis,a simple static model tunnel test was carried out,the numerical analysis results have been verified by the static model test.It indicates that the strength reduction FLAC can be used for static stability analysis on the tunnel,and then,the static stability factor of safety tunnel is calculated.It has formed foundation for further analysis of the seismic response of loess tunnel lining and tunnel dynamic stability analysis of loess foundation,but also provided the basis for the stability of the tunnel during the construction and operation period.
Strength reduction method is combined with large-scale finite difference code FLAC containing the tension and shear failure analysis,and it is introduced into the static stability analysis of tunnel.First,a numerical analysis was conducted on the loess unlined tunnel static failure mechanism,then,on this basis,a simple static model tunnel test was carried out,the numerical analysis results have been verified by the static model test.It indicates that the strength reduction FLAC can be used for static stability analysis on the tunnel,and then,the static stability factor of safety tunnel is calculated.It has formed foundation for further analysis of the seismic response of loess tunnel lining and tunnel dynamic stability analysis of loess foundation,but also provided the basis for the stability of the tunnel during the construction and operation period.
引文
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[8]Zheng Y R,Den C J,Tang X S,et al.Development of fi-nite element limiting analysis method and its applicationin geotechnical engineering[J].Engineering Sciences,2007,3(5):10-36.
[9]郑颖人,赵尚毅,张鲁渝.用有限元强度折减法进行边坡稳定分析[J].中国工程科学,2002,4(10):57-62.(Zheng Yingren,Zhao Shangyi,Zhang Luyu.Slopestability analysis by strength reduction FEM[J].Engi-neering Science,2002,4(10):57-62.(in Chinese))
[10]Itasca Consulting Group,Inc..Fast Lagrangian analy-sis of continua in three dimensions(version 3.0),user’s manual[R].[S.l.]:Itasca ConsultingGroup,Inc.,2003.
[11]赵尚毅,郑颖人,张玉芳.极限分析有限元法讲座——Ⅱ有限元强度折减法中边坡失稳的判据探讨[J].岩土力学,2005,26(2):332-336.(ZhaoShangyi,Zheng Yingren,Zhang Yufang.Study on slopefailure criterion in strength reduction finite elementmethod[J].Rock and Soil Mechanics,2005,26(2):332-336.(in Chinese))
[12]郑颖人,陈祖煜,王恭先,等.边坡与滑坡工程治理[M].人民交通出版社,2007.(Zheng Yingren,ChenZuyu,Wang Gongxian,et al.Engineering treatment ofslope&landslide[M].China Communications Press,2007.(in Chinese))
[13]高峰,任侠.黄土窖洞地震反应分析[J].兰州铁道学院学报(自然科学版),2001,20(3):12-18.(GaoFeng,Ren Xia.Seismic responses analysis of a loesscave[J].Journal of Lanzhou Railway University(Natu-ral Sciences),2001,20(3):12-18.(in Chinese))
[2]张黎明,郑颖人,王在泉,等.有限元强度折减法在公路隧道中的应用探讨[J].岩土力学,2007,28(1):97-101.(Zhang Liming,Zheng Yingren,Wang Zaiquan,et al.Application of strength reduction finite limit meth-od to road tunnels[J].Rock and Soil Mechanics,2007,28(1):97-101.(in Chinese))
[3]郑颖人,胡文清,王敬林.强度折减有限元法及其在隧道与地下洞室工程中的应用[C]//中国土木工程学会第十一届、隧道及地下工程分会第十三届年会论文集.[S.l.]:[s.n.].2004:239-243.(ZhengYingren,Hu Wenqing,Wang Jinlin.Strength ReductionFEMand its application to tunnel and underground engi-neering[C]//Symposium of the 11th Annual Meeting ofChina Civil Engineering Society and the 13th AnnualMeeting of Tunnel and Underground Branch.[S.l.]:[s.n.].2004:239-243.(in Chinese))
[4]郑颖人,赵尚毅,邓楚键,等.有限元极限分析法发展及其在岩土工程中的应用[J].中国工程科学,2006,8(12):39-61.(Zheng Yingren,Zhao Shangyi,DengChujian,et al.Development of finite limit analysismethod and its applications to geotechnical engineering[J].Engineering Science,2006,8(12):39-61.(inChinese))
[5]郑颖人,邱陈瑜,张红,等.关于土体隧洞围岩稳定性分析方法的探索[J].岩石力学与工程学报,2008,27(10).(Zheng Yingren,Qiu Chenyu,Zhang Hong,et al.Exploration of stability analysis methods of surroundingrocks in soil tunnel[J].Chinese Journal of Rock Me-chanics and Engineering,2008,27(10):254-260.(inChinese))
[6]郑颖人,邱陈瑜,宋雅坤,等.土质隧洞围岩稳定性分析与设计计算方法探讨[J].后勤工程学院学报,2009,25(10):1-9.(Zheng Yingren,Qiu Chenyu,SongYakun,et al.Exploration of stability analysis and designcalculation methods of surrounding rocks in soil tunnel[J].Journal of Logistical Engineering University,2009,25(10):1-9.(in Chinese))
[7]郑颖人,邱陈瑜,宋雅坤.采用ANSYS软件讨论无衬砌黄土隧洞安全系数[J].地下空间与工程学报,2009,5(2):291-296.(Zheng Yingren,Qiu Chenyu,Song Yakun.Exploring of safety factors of unlined loesstunnel by ANSYS[J].Chinese Journal of UndergroundSpace and Engineering,2009,5(2):291-296.(in Chi-nese))
[8]Zheng Y R,Den C J,Tang X S,et al.Development of fi-nite element limiting analysis method and its applicationin geotechnical engineering[J].Engineering Sciences,2007,3(5):10-36.
[9]郑颖人,赵尚毅,张鲁渝.用有限元强度折减法进行边坡稳定分析[J].中国工程科学,2002,4(10):57-62.(Zheng Yingren,Zhao Shangyi,Zhang Luyu.Slopestability analysis by strength reduction FEM[J].Engi-neering Science,2002,4(10):57-62.(in Chinese))
[10]Itasca Consulting Group,Inc..Fast Lagrangian analy-sis of continua in three dimensions(version 3.0),user’s manual[R].[S.l.]:Itasca ConsultingGroup,Inc.,2003.
[11]赵尚毅,郑颖人,张玉芳.极限分析有限元法讲座——Ⅱ有限元强度折减法中边坡失稳的判据探讨[J].岩土力学,2005,26(2):332-336.(ZhaoShangyi,Zheng Yingren,Zhang Yufang.Study on slopefailure criterion in strength reduction finite elementmethod[J].Rock and Soil Mechanics,2005,26(2):332-336.(in Chinese))
[12]郑颖人,陈祖煜,王恭先,等.边坡与滑坡工程治理[M].人民交通出版社,2007.(Zheng Yingren,ChenZuyu,Wang Gongxian,et al.Engineering treatment ofslope&landslide[M].China Communications Press,2007.(in Chinese))
[13]高峰,任侠.黄土窖洞地震反应分析[J].兰州铁道学院学报(自然科学版),2001,20(3):12-18.(GaoFeng,Ren Xia.Seismic responses analysis of a loesscave[J].Journal of Lanzhou Railway University(Natu-ral Sciences),2001,20(3):12-18.(in Chinese))
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