某变形边坡抗滑桩预应力锚索挡土墙设计与应用
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摘要
针对某变形边坡,基于力学基础理论,提出了变形边坡抗滑桩预应力锚索挡土墙,即:在坡脚处设置半重力式挡土墙,墙体下方设置双排抗滑桩,墙体露出地表部分以一定倾角布设预应力锚索,通过预应力锚索与半重力式挡土墙相连提供锚拉力,以增加挡土墙抗滑力。设计时着重考虑了土体剩余下滑力、土压力、抗滑桩入土深度、锚拉力、地震主动土压力,并通过理论计算和数值模拟得到了加固后边坡抗滑系数满足国家规范要求,该设计可为其他类似工程提供参考。
Aiming at a certain deformation slope,based on the basic theory of mechanics,the prestressed anchor cable retaining wall with anti slide pile is put forward: Located the gravity retaining wall at the foot of the slope. Set the double row anti-slide piles at below of the wall. Set the prestressed anchor cable with a certain angle at the exposed surface of the wall. Anchoring force is provided by the prestressed anchor cable and the semi gravity retaining wall to increase the anti sliding force of retaining wall. The residual sliding force,soil pressure,anti-slide pile depth,force of anchor and seismic active earth pressure are considered in the design. And through theoretical calculation and numerical simulation, the anti slide coefficient of reinforced slope meets the requirements of national standard,This design can provide reference for other similar projects.
Aiming at a certain deformation slope,based on the basic theory of mechanics,the prestressed anchor cable retaining wall with anti slide pile is put forward: Located the gravity retaining wall at the foot of the slope. Set the double row anti-slide piles at below of the wall. Set the prestressed anchor cable with a certain angle at the exposed surface of the wall. Anchoring force is provided by the prestressed anchor cable and the semi gravity retaining wall to increase the anti sliding force of retaining wall. The residual sliding force,soil pressure,anti-slide pile depth,force of anchor and seismic active earth pressure are considered in the design. And through theoretical calculation and numerical simulation, the anti slide coefficient of reinforced slope meets the requirements of national standard,This design can provide reference for other similar projects.
引文
[1]介玉新,柏永亮,张彬.基于加速度的边坡和挡土墙稳定性分析[J].地球科学与环境学报,2015,37(6):120-126.JIE Yuxin,BAI Yongliang,ZHANG Bin.Stability analysis of slopes and retaining walls based on accerleration[J].Journal of Earth Sciences and Environment,2015,37(6):120-126.
[2]何思明,朱平一,张小刚.带抗滑键的挡土墙设计[J].岩石力学与工程学报,2003,22(7):1211-1215.HE Siming,ZHU Pingyi,ZHANG Xiaogang.Design of retaining walls with anti-slide tie[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(7):1211-1215.
[3]薛丽影,杨文生.某高边坡桩基立柱锚拉式挡土墙设计[J].岩土工程学报,2013,35(S2):1176-1179.XUE Liying,YANG Wensheng.Design of uprightanchored pile retaining wall in a high slope[J].Chinese Journal of Geotechnical Engineering,2013,35(S2):1176-1179.
[4]刘茂,杨红娟,吕建祥.刚性拉筋加筋土挡土墙内部滑移稳定性探索[J].中国地质灾害与防治学报,2016,27(3):66-71.LIU Mao,YANG Hongjuan,LYU Jianxiang.Research on inner sliding stability of reinforced earth retaining wall for the rigid striped reinforcement[J].The Chinese Journal of Geological Hazard and Control,2016,27(3):66-71.
[5]李纯玉.重力式挡土墙稳定性影响因素分析研究[J].工程勘察,2014(5):21-25.LI Chunyu.Study on the stability influence factors of gravity retaining wall[J].Geotechnical Investigation and Surveying,2014(5):21-25.
[6]杨波,郑颖人,赵尚毅,等.双排抗滑桩在三种典型滑坡的计算与受力规律分析[J].岩土力学,2010,31(S1):237-244.YANG Bo,ZHENG Yingren,ZHAO Shangyi,et al.Two-row anti-slide piles in three kinds of typical landslide computations and stress rule analysis[J].Rock and Soil Mechanics,2010,31(S1):237-244.
[7]高长胜,魏汝龙,陈生水.抗滑桩加固边坡变形破坏特性离心模型试验研究[J].岩土工程学报,2009,31(1):145-148.GAO Changsheng,WEI Rulong,CHEN Shengshui.Centrifugal model tests on deformation of slopes reinforced with piles[J].Chinese Journal of Geotechnical Engineering,2009,31(1):145-148.
[8]钱同辉,唐辉明.双排门式抗滑桩的空间计算模型[J].岩土力学,2009,30(4):1137-1141.QIAN Tonghui,TANG Huiming.Spatial calculation model for portal double row anti-slide piles[J].Rock and Soil Mechanics,2009,30(4):1137-1141.
[9]徐前卫,尤春安,朱合华.预应力锚索的三维数值模拟及其锚固机理分析[J].地下空间与工程学报,2005,1(2):214-218+222.XU Qianwei,YOU Chunan,ZHU Hehua.Research on 3D numerical simulation of prestressed anchor cableand its anchoring mechanism[J].Chinese Journal of Underground Space and Engineering,2005,1(2):214-218+222.
[10]刘小丽,张占民,周德培.预应力锚索抗滑桩的改进计算方法[J].岩石力学与工程学报,2004,23(15):2568-2572.LIU Xiaoli,Zhang Zhanmin,Zhou Depei.Improved method for computing anti-sliding pile with prestressed anchoring cable[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(15):2568-2572.
[11]韩侃,李登科,吴冠仲.预应力锚索锚固力拉拔试验分析[J].岩土工程学报,2011,33(S1):392-394.HAN Kan,LI Dengke,WU Guanzhong.Pull-out tests on anchoring force of prestressed anchor cables[J].Chinese Journal of Geotechnical Engineering,2011,33(S1):392-394.
[12]夏唐代,孔祥冰,王志凯,等.挡土墙后黏性土的地震主动土压力分析[J].岩石力学与工程学报,2012,31(S1):3188-3195.XIA Tangdai,KONG Xiangbing,WANG Zhikai,et al.Analysis of seismic active earth pressure of cohesive soil behind retaining wall[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(S1):3188-3195.
[13]文畅平.多级支挡结构地震主动土压力的极限分析[J].岩土力学,2013,34(11):3205-3212.WEN Changping.Limit analysis of seismic active earth pressure of multistage retaining structures[J].Rock and Soil Mechanics,2013,34(11):3205-3212.
[14]王浩,董建华,王永胜,等.挡土墙地震土压力的拟动力分析[J].振动与冲击,2016,35(18):128-133.WANG Hao,DONG Jianhua,WANG Yongsheng,et al.Peseudo-dynamic analysis on seismic earth pressure of retaining wall[J].Journal of Vibration and Shock,2016,35(18):128-133.
[15]王明珉,王桂林,吴曙光.地震作用下桩间挡土构件主动土压力极限分析方法[J].岩土工程学报,2015,37(12):2301-2307.WANG Mingmin,WANG Guilin,WU Shuguang.Limit analysis method for seismic active pressure on sheet between anti-slide piles[J].Chinese Journal of Geotechnical Engineering,2015,37(12):2301-2307.
[2]何思明,朱平一,张小刚.带抗滑键的挡土墙设计[J].岩石力学与工程学报,2003,22(7):1211-1215.HE Siming,ZHU Pingyi,ZHANG Xiaogang.Design of retaining walls with anti-slide tie[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(7):1211-1215.
[3]薛丽影,杨文生.某高边坡桩基立柱锚拉式挡土墙设计[J].岩土工程学报,2013,35(S2):1176-1179.XUE Liying,YANG Wensheng.Design of uprightanchored pile retaining wall in a high slope[J].Chinese Journal of Geotechnical Engineering,2013,35(S2):1176-1179.
[4]刘茂,杨红娟,吕建祥.刚性拉筋加筋土挡土墙内部滑移稳定性探索[J].中国地质灾害与防治学报,2016,27(3):66-71.LIU Mao,YANG Hongjuan,LYU Jianxiang.Research on inner sliding stability of reinforced earth retaining wall for the rigid striped reinforcement[J].The Chinese Journal of Geological Hazard and Control,2016,27(3):66-71.
[5]李纯玉.重力式挡土墙稳定性影响因素分析研究[J].工程勘察,2014(5):21-25.LI Chunyu.Study on the stability influence factors of gravity retaining wall[J].Geotechnical Investigation and Surveying,2014(5):21-25.
[6]杨波,郑颖人,赵尚毅,等.双排抗滑桩在三种典型滑坡的计算与受力规律分析[J].岩土力学,2010,31(S1):237-244.YANG Bo,ZHENG Yingren,ZHAO Shangyi,et al.Two-row anti-slide piles in three kinds of typical landslide computations and stress rule analysis[J].Rock and Soil Mechanics,2010,31(S1):237-244.
[7]高长胜,魏汝龙,陈生水.抗滑桩加固边坡变形破坏特性离心模型试验研究[J].岩土工程学报,2009,31(1):145-148.GAO Changsheng,WEI Rulong,CHEN Shengshui.Centrifugal model tests on deformation of slopes reinforced with piles[J].Chinese Journal of Geotechnical Engineering,2009,31(1):145-148.
[8]钱同辉,唐辉明.双排门式抗滑桩的空间计算模型[J].岩土力学,2009,30(4):1137-1141.QIAN Tonghui,TANG Huiming.Spatial calculation model for portal double row anti-slide piles[J].Rock and Soil Mechanics,2009,30(4):1137-1141.
[9]徐前卫,尤春安,朱合华.预应力锚索的三维数值模拟及其锚固机理分析[J].地下空间与工程学报,2005,1(2):214-218+222.XU Qianwei,YOU Chunan,ZHU Hehua.Research on 3D numerical simulation of prestressed anchor cableand its anchoring mechanism[J].Chinese Journal of Underground Space and Engineering,2005,1(2):214-218+222.
[10]刘小丽,张占民,周德培.预应力锚索抗滑桩的改进计算方法[J].岩石力学与工程学报,2004,23(15):2568-2572.LIU Xiaoli,Zhang Zhanmin,Zhou Depei.Improved method for computing anti-sliding pile with prestressed anchoring cable[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(15):2568-2572.
[11]韩侃,李登科,吴冠仲.预应力锚索锚固力拉拔试验分析[J].岩土工程学报,2011,33(S1):392-394.HAN Kan,LI Dengke,WU Guanzhong.Pull-out tests on anchoring force of prestressed anchor cables[J].Chinese Journal of Geotechnical Engineering,2011,33(S1):392-394.
[12]夏唐代,孔祥冰,王志凯,等.挡土墙后黏性土的地震主动土压力分析[J].岩石力学与工程学报,2012,31(S1):3188-3195.XIA Tangdai,KONG Xiangbing,WANG Zhikai,et al.Analysis of seismic active earth pressure of cohesive soil behind retaining wall[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(S1):3188-3195.
[13]文畅平.多级支挡结构地震主动土压力的极限分析[J].岩土力学,2013,34(11):3205-3212.WEN Changping.Limit analysis of seismic active earth pressure of multistage retaining structures[J].Rock and Soil Mechanics,2013,34(11):3205-3212.
[14]王浩,董建华,王永胜,等.挡土墙地震土压力的拟动力分析[J].振动与冲击,2016,35(18):128-133.WANG Hao,DONG Jianhua,WANG Yongsheng,et al.Peseudo-dynamic analysis on seismic earth pressure of retaining wall[J].Journal of Vibration and Shock,2016,35(18):128-133.
[15]王明珉,王桂林,吴曙光.地震作用下桩间挡土构件主动土压力极限分析方法[J].岩土工程学报,2015,37(12):2301-2307.WANG Mingmin,WANG Guilin,WU Shuguang.Limit analysis method for seismic active pressure on sheet between anti-slide piles[J].Chinese Journal of Geotechnical Engineering,2015,37(12):2301-2307.