基于弹性理论的顺层边坡溃屈失稳分析
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摘要
在建立考虑自重、地震作用和地下水共同作用的二维顺层岩质边坡的简化力学模型的基础上,根据弹性薄板的稳定理论,利用能量法探讨顺层岩质边破溃屈失稳机理,并推导了相应的计算公式,通过实例计算,比较了本文所述方法的分析结果与只考虑了岩板自重作用的弹性板分析结果,且经现场勘察,证明了本方法用于溃屈失稳分析的可行性。同时表明地震作用和地下水作用在顺层岩质边坡稳定性计算中是不可忽视的因素。
A predigested mechanical model of the two-dimension consequent rocky slope was built considered the influence of deadweight,earthquake and groundwater.Based on it and according to stability theory for elastic plane,a study on the mechanism of consequent rocky slopes' buckling failure by energy method was carried out,and a computing formula has been deduced.The comparison between the results in this paper with the results obtained from the traditional elastic plane method only considered the influence of deadweight,reveals that the method presented in this paper is applicable for such analysis.
A predigested mechanical model of the two-dimension consequent rocky slope was built considered the influence of deadweight,earthquake and groundwater.Based on it and according to stability theory for elastic plane,a study on the mechanism of consequent rocky slopes' buckling failure by energy method was carried out,and a computing formula has been deduced.The comparison between the results in this paper with the results obtained from the traditional elastic plane method only considered the influence of deadweight,reveals that the method presented in this paper is applicable for such analysis.
引文
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[5]刘小丽,周德培.用弹性板理论分析顺层岩质边坡的失稳[J].岩土力学,2002,23(2):162~165.LIU Xiao-li,ZHOU De-pei.Stability Analysis of Layered Dip Rocky Slopes with Elastic Plane Theory[J].Rock and Soil Me-chanics,2002,23(2):162~165.(in Chinese)
[6]李维光,张继春.基于弹性理论的顺层边坡失稳破坏力学模型分析[J].工程地质学报,2005,12(2):218~221.LI Wei-guang,ZHANG Ji-chun.A Mechanical Model for an Inclined Bedded Slope Based on Elastic Theory[J].Journal ofEngineering Geology,2005,12(02):218~221.(in Chinese)
[7]刘钧.顺层边坡溃层问题的计算方法[J].水文地质工程地质,1997,(6):37~41.LIU Jun.The Estimating Method for Buckling Yield of Stratified Rock Slopes[J].Hydrogeology&Engineering Geology,1997,(6):37~41.(in Chinese)
[8]李云鹏,安晓宁,王芝银.考虑不同拉压特性的边坡岩体结构稳定性位移判据[J].西安公路交通大学学报,1999,19(4):15~17.LI Yun-peng,AN Xiao-ning,WANG Zhi-yin.Displacement Criterion of Structure Stability for Rockmass Slope by ConsideringDifferent Tensile-compressive Behavior[J].Journal of Xi’an Highway University,1999,19(4):15~17.(in Chinese)
[9]朱晗迓,马美玲,尚岳全.顺倾向层状岩质边坡溃屈破坏分析[J].浙江大学学报(工学版),2004,38(9):1144~1149.ZHUHan-ya,MAMei-ling,SHANG Yuequan.Analysis of Buckling Failure of Consequent Rock Slope[J].Journal of ZhejiangUniversity(Engineering Science),2004,38(9):1144~1149.(in Chinese)
[2]徐邦栋.岩石顺层滑坡的性质与防治.滑坡文集(第三集)[C].北京:人民铁道出版社,1982.1~8.XU Bang-dong.The Nature and Prevention of Consequent-rock-slope(3rd.volume)[C].Beijing:People’s Railway Press,1994.1~8.(in Chinese)
[3]Hoke E.,Bray J.W.Rock Slope Engineering[M].London:Inst.Min.and Metall,1997.
[4]孙广忠.岩体结构力学[M].北京:科学出版社,1998.SUN Guang-zhong.Rockmass Structure Mechanics[M].Beijing:Science Press,1998.(in Chinese)
[5]刘小丽,周德培.用弹性板理论分析顺层岩质边坡的失稳[J].岩土力学,2002,23(2):162~165.LIU Xiao-li,ZHOU De-pei.Stability Analysis of Layered Dip Rocky Slopes with Elastic Plane Theory[J].Rock and Soil Me-chanics,2002,23(2):162~165.(in Chinese)
[6]李维光,张继春.基于弹性理论的顺层边坡失稳破坏力学模型分析[J].工程地质学报,2005,12(2):218~221.LI Wei-guang,ZHANG Ji-chun.A Mechanical Model for an Inclined Bedded Slope Based on Elastic Theory[J].Journal ofEngineering Geology,2005,12(02):218~221.(in Chinese)
[7]刘钧.顺层边坡溃层问题的计算方法[J].水文地质工程地质,1997,(6):37~41.LIU Jun.The Estimating Method for Buckling Yield of Stratified Rock Slopes[J].Hydrogeology&Engineering Geology,1997,(6):37~41.(in Chinese)
[8]李云鹏,安晓宁,王芝银.考虑不同拉压特性的边坡岩体结构稳定性位移判据[J].西安公路交通大学学报,1999,19(4):15~17.LI Yun-peng,AN Xiao-ning,WANG Zhi-yin.Displacement Criterion of Structure Stability for Rockmass Slope by ConsideringDifferent Tensile-compressive Behavior[J].Journal of Xi’an Highway University,1999,19(4):15~17.(in Chinese)
[9]朱晗迓,马美玲,尚岳全.顺倾向层状岩质边坡溃屈破坏分析[J].浙江大学学报(工学版),2004,38(9):1144~1149.ZHUHan-ya,MAMei-ling,SHANG Yuequan.Analysis of Buckling Failure of Consequent Rock Slope[J].Journal of ZhejiangUniversity(Engineering Science),2004,38(9):1144~1149.(in Chinese)
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