基于数值计算的抗滑桩锚固深度分析
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摘要
利用数值计算探究在同一工况下,抗滑桩锚固深度分别与桩身截面尺寸、锚固段岩体强度的关系。分析结果表明:抗滑桩锚固深度随桩身截面尺寸增大而减小,但趋于一定值后,基本不再变化;锚固段岩体强度在一定范围变化时,抗滑桩锚固深度随锚固段岩体强度增大而减小,桩身弯矩呈反对称分布。
Using numerical calculation,the relationship between the anchorage depth of anti-slide pile and the section size of pile body and the strength of the rock mass in the same engineering condition is discussed. The analysis results show that the anti-slide pile anchorage depth decreases with the increase of pile section size,but tends to a certain value,it is not change; when the strength of anchoring rock mass change in a certain range,the anchorage depth of anti-slide pile decreases with the increase of the strength of the rock mass in the anchorage section,the bending moment of the piles is antisymmetric distribution.
Using numerical calculation,the relationship between the anchorage depth of anti-slide pile and the section size of pile body and the strength of the rock mass in the same engineering condition is discussed. The analysis results show that the anti-slide pile anchorage depth decreases with the increase of pile section size,but tends to a certain value,it is not change; when the strength of anchoring rock mass change in a certain range,the anchorage depth of anti-slide pile decreases with the increase of the strength of the rock mass in the anchorage section,the bending moment of the piles is antisymmetric distribution.
引文
[1]刘新荣,梁宁慧,黄金国,等.抗滑桩在边坡工程中的研究进展及应用[J].中国地质灾害与防治学报,2006,17(1):56-62.LIU X R,LIANG N H,HUANG J G,et al. Progress and applications of antisliding piles in slope reinforcing projects[J]. The Chinese Journal of Geological Hazard and Control,2006,17(1):56-62.
[2]铁道部第二勘测设计院.抗滑桩设计与计算[M].北京:中国铁道出版社,1983.The Second Survey and Design Institute of Railway Ministry. Design and Computation of Anti-slide Piles[M]. Beijing:China Railway Publishing House,1983.
[3]蒋建国,邹银生,周绪红.刚性抗滑桩锚固深度的简化计算[J].工程力学,2001,18(增刊1):457-460.JIANG J G,ZOU Y S,ZHOU X H. Simplified calculation on rigid anti-slide piles anchorage depth[J]. Engineering Mechanics,2001,18(S1):457-460.
[4]胡晓军,王建国.基于强度折减的刚性抗滑桩锚固深度确定[J].土木工程学报,2007,40(1):65-68.HU X J,WANG J G. Determination of the anchorage depth of rigid anti-slide piles based on strength reduction method[J]. China Civil Engineering Journal,2007,40(1):65-68.
[5]周春梅,殷坤龙.三峡库区滑坡治理中抗滑桩锚固深度的研究[J].武汉理工大学学报,2006,28(2):38-41.ZHOU C M, YIN K L. Study on anchorage length of anti-slide pile in landslide prevention in the Three Gorges Reservoir Area[J]. Journal of Wuhan University of Technology,2006:28(2):38-41.
[6]张文居,赵其华,刘晶晶.参数变异性对抗滑桩锚固深度可靠度的影响分析[J].水文地质工程地质,2006,33(3):61-63.ZHANG W J,ZHAO Q H,LIU J J. On effect of variability of parameters on anchoring depth reliability of anti-sliding pile[J]. Hydrogeology&Engineering Geology,2006,33(3):61-63.
[7]年廷凯,栾茂田,郑德凤,等.基于极限分析下限方法的抗滑桩锚固深度检算[J].武汉理工大学报,2007,29(8):82-86.NIAN T K,LUAN M T,ZHENG D F,et al. Anchorage depth computation of slope-stabilizing piles using lower-bound method of limit analysis[J].Journal of Wuhan University of Technology,2007,29(8):82-86.
[8]吴坤铭,王建国,谭晓慧.基于可靠度分析确定刚性抗滑桩锚固深度[J].岩土工程学报,2012,34(2):237-242.WU K M,WANG J G,TAN X H. Determination of anchorage depth for rigid anti-slide piles based on reliability analysis[J]. Chinese Journal of Geotechnical Engineering,2012,34(2):237-242.
[9]李洪勇.基于FLAC3D的龙江特大桥边坡稳定性分析[J].武汉理工大学学报,2010,32(3):61-64.LI H Y. Slope stability analysis of Longjiang River large bridge based on 3-D fast lagrangian method(FLAC3D)[J]. Journal of Wuhan University of Technology,2010,32(3):61-64.
[10]孙书伟,林杭,任连伟. FLAC3D在岩土工程中的应用[M].北京:中国水利水电出版社,2011.SUN S W,LIN H,REN L W. Application of FLAC3D in Geotechnical Engineering[M]. Beijing:China Water&Power Press,2011.
[2]铁道部第二勘测设计院.抗滑桩设计与计算[M].北京:中国铁道出版社,1983.The Second Survey and Design Institute of Railway Ministry. Design and Computation of Anti-slide Piles[M]. Beijing:China Railway Publishing House,1983.
[3]蒋建国,邹银生,周绪红.刚性抗滑桩锚固深度的简化计算[J].工程力学,2001,18(增刊1):457-460.JIANG J G,ZOU Y S,ZHOU X H. Simplified calculation on rigid anti-slide piles anchorage depth[J]. Engineering Mechanics,2001,18(S1):457-460.
[4]胡晓军,王建国.基于强度折减的刚性抗滑桩锚固深度确定[J].土木工程学报,2007,40(1):65-68.HU X J,WANG J G. Determination of the anchorage depth of rigid anti-slide piles based on strength reduction method[J]. China Civil Engineering Journal,2007,40(1):65-68.
[5]周春梅,殷坤龙.三峡库区滑坡治理中抗滑桩锚固深度的研究[J].武汉理工大学学报,2006,28(2):38-41.ZHOU C M, YIN K L. Study on anchorage length of anti-slide pile in landslide prevention in the Three Gorges Reservoir Area[J]. Journal of Wuhan University of Technology,2006:28(2):38-41.
[6]张文居,赵其华,刘晶晶.参数变异性对抗滑桩锚固深度可靠度的影响分析[J].水文地质工程地质,2006,33(3):61-63.ZHANG W J,ZHAO Q H,LIU J J. On effect of variability of parameters on anchoring depth reliability of anti-sliding pile[J]. Hydrogeology&Engineering Geology,2006,33(3):61-63.
[7]年廷凯,栾茂田,郑德凤,等.基于极限分析下限方法的抗滑桩锚固深度检算[J].武汉理工大学报,2007,29(8):82-86.NIAN T K,LUAN M T,ZHENG D F,et al. Anchorage depth computation of slope-stabilizing piles using lower-bound method of limit analysis[J].Journal of Wuhan University of Technology,2007,29(8):82-86.
[8]吴坤铭,王建国,谭晓慧.基于可靠度分析确定刚性抗滑桩锚固深度[J].岩土工程学报,2012,34(2):237-242.WU K M,WANG J G,TAN X H. Determination of anchorage depth for rigid anti-slide piles based on reliability analysis[J]. Chinese Journal of Geotechnical Engineering,2012,34(2):237-242.
[9]李洪勇.基于FLAC3D的龙江特大桥边坡稳定性分析[J].武汉理工大学学报,2010,32(3):61-64.LI H Y. Slope stability analysis of Longjiang River large bridge based on 3-D fast lagrangian method(FLAC3D)[J]. Journal of Wuhan University of Technology,2010,32(3):61-64.
[10]孙书伟,林杭,任连伟. FLAC3D在岩土工程中的应用[M].北京:中国水利水电出版社,2011.SUN S W,LIN H,REN L W. Application of FLAC3D in Geotechnical Engineering[M]. Beijing:China Water&Power Press,2011.