基于虚功原理的悬索桥隧道式锚碇边坡稳定性分析
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摘要
本文基于虚功原理,结合工程地质勘察资料,在岩层层面和不利结构面组合切割下,由于锚碇工程荷载作用,研究坝陵河大桥西岸隧道式锚碇边坡的整体稳定性。本文的力学分析模型采用多个块体破坏机构的分析方法,假定块体的底面和侧面均达到了极限平衡状态,安全系数可通过功能平衡的虚功原理表达式来求解。功能平衡方程中仅有安全系数一个未知数,条块底部和界面上的法向压力和切向摩擦力并不出现,求解大为简化。
This paper presents a stability analysis of the fractured rock mass slope used as the foundation of a tunnel-type anchorage of a suspension bridge across Baling river.he western anchorage of the bridge is buried in the slope.The study takes into account the slope geological conditions and the loading from the bridge in the analysis.The slope stability analysis model is developed on the basis of the virtual work principle,where the rock stratification planes and the adverse discontinuities are incorporated.
This paper presents a stability analysis of the fractured rock mass slope used as the foundation of a tunnel-type anchorage of a suspension bridge across Baling river.he western anchorage of the bridge is buried in the slope.The study takes into account the slope geological conditions and the loading from the bridge in the analysis.The slope stability analysis model is developed on the basis of the virtual work principle,where the rock stratification planes and the adverse discontinuities are incorporated.
引文
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[2]李广信.高等土力学[M].北京:清华大学出版社,2004.L i Guangxin.Advanced soil m echan ics.Beijing:Tsinghua Un i-versity Press,2004.
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[5]程东幸,等.反倾岩质边坡变形特征的三维数值模拟研究[J].工程地质学报,2005,13(2):222~226.Cheng Dongxing,et al..The study deformation characteristics oftoppling of rock slope w ith 3d numberical simu lation.Journal ofEngineering Geology,2005,13(2):222~226.
[2]李广信.高等土力学[M].北京:清华大学出版社,2004.L i Guangxin.Advanced soil m echan ics.Beijing:Tsinghua Un i-versity Press,2004.
[3]赵彭年.松散介质力学[M].北京:地震出版社,1995.Zhao Pengn ian.M echan ics of d iscrete m ed ia.Beijing:SeismPress,1995.
[4]陈祖煜,汪小刚,杨健,等.岩质边坡稳定性分析—原理、方法、程序[M].北京:中国水利水电出版社,2005.Chen Zuyu,W ang X iaogang,Yang Jian etc.Rock slope stab ilityanalysis-theory,m ethods and program s.Beijing:Ch ina W aterPower Press,2005.
[5]程东幸,等.反倾岩质边坡变形特征的三维数值模拟研究[J].工程地质学报,2005,13(2):222~226.Cheng Dongxing,et al..The study deformation characteristics oftoppling of rock slope w ith 3d numberical simu lation.Journal ofEngineering Geology,2005,13(2):222~226.
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