土钉墙地震动力分析及抗震设计方法
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摘要
为了深入了解地震作用下土钉墙动力特性,并为其提供实用的动力分析方法,基于动力Win-kler地基模型,建立了考虑面板、坡后土体及土钉协同工作的土钉墙动力分析模型,并进行了求解。该模型将面板处理为弹性地基梁,将土钉处理为一个弹簧和阻尼来替代。基于建立的计算模型和震害模式给出了其抗震设计方法,并结合具体工程实例进行了地震作用动力分析及抗震设计,最后与动力离心试验进行了验证。结果表明:土钉墙延性大,具有良好的抗震性能;土钉的峰值轴力连线与静力作用下相似;提出的分析方法对土质较均匀的边坡是可行的,为土钉墙的地震分析及抗震设计提供了一种新的途径。
In order to deeply investigate the dynamic characteristics of soil nailing retaining wall under earthquake and provide practical dynamic analysis method,based on dynamic Winkler foundation theory,considering that the facing,the soil behind slope and the soil nailing work together,the dynamic analysis model for soil nailing retaining wall was established and the analytical solutions were obtained.The facing was treated as elastic foundation beam in this model.The influence of the soil nailing was simplified as linear spring and damped system.Seismic design methods were given based on proposed calculation model.The seismic response of engineering example was analyzed using the proposed method.And the proposed method was verified with centrifugal test.The results show that the soil nailing retaining wall has good anti-seismic performance and the peak value of soil nailing axial force and static attachment are the same.The proposed method for analysis is feasible for the slopes with relatively uniform soil.The analysis model provides a new way for seismic analysis and seismic design of the soil nailing retaining wall.
In order to deeply investigate the dynamic characteristics of soil nailing retaining wall under earthquake and provide practical dynamic analysis method,based on dynamic Winkler foundation theory,considering that the facing,the soil behind slope and the soil nailing work together,the dynamic analysis model for soil nailing retaining wall was established and the analytical solutions were obtained.The facing was treated as elastic foundation beam in this model.The influence of the soil nailing was simplified as linear spring and damped system.Seismic design methods were given based on proposed calculation model.The seismic response of engineering example was analyzed using the proposed method.And the proposed method was verified with centrifugal test.The results show that the soil nailing retaining wall has good anti-seismic performance and the peak value of soil nailing axial force and static attachment are the same.The proposed method for analysis is feasible for the slopes with relatively uniform soil.The analysis model provides a new way for seismic analysis and seismic design of the soil nailing retaining wall.
引文
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[13]董建华,朱彦鹏.土钉边坡支护结构动力计算方法研究[J].振动与冲击,2011,30(2):217-221.DONG Jian-hua,ZHU Yan-peng.Dynamic CalculationMethod for Soil Nailing Supporting Structure[J].Journal of Vibration and Shock,2011,30(2):217-221.
[14]董建华,朱彦鹏.地震作用下土钉支护边坡永久位移计算方法研究[J].工程力学,2011,28(10):101-110.DONG Jian-hua,ZHU Yan-peng.Permanent Dis-placement Assessment of Slope Protected by SoilNailing Retaining Wall Under Earthquake[J].Engi-neering Mechanics,2011,28(10):101-110.
[15]克拉夫R,彭津J.结构动力学[M].王光远,译.北京:科学出版社,1981.CLOUGH R,PENZIEN J.Dynamics of Structure[M].Translated by WANG Guang-yuan.Beijing:Sci-ence Press,1981.
[16]谢定义.土动力学[M].西安:西安交通大学出版社,1998.XIE Ding-yi.Soil Dynamics[M].Xi'an:Xi'an JiaotongUniversity Press,1998.
[17]徐芝纶.弹性力学简明教程[M].3版.北京:高等教育出版社,2002.XU Zhi-lun.Elastic Mechanics Concise Course[M].3rd ed.Beijing:Higher Education Press,2002.
[18]陈希哲.土力学地基基础[M].4版.北京:清华大学出版社,2004.CHEN Xi-zhe.Soil Mechanics and Foundation[M].4th ed.Beijing:Tsinghua University Press,2004.
[19]JGJ120—99,建筑深基坑支护技术规程[S].JGJ 120—99,Technical Specification for Retainingand Protection of Building Foundation Excavations[S].
[20]KAGAWA T.Lateral Pile-group Response UnderSeismic Loading[J].Soils and Foundations,1983,23(4):75-86.
[21]SEED H B,IDRISS I M.Soil Moduli and DampingFactors for Dynamic Response Analysis[R].Berke-ley:Earthquake Research Engineering Center,Univer-sity of California,1970.
[22]胡聿贤.地震工程学[M].北京:地震出版社,1988.HU Yu-xian.Earthquake Engineering[M].Beijing:Earthquake Press,1988.
[23]GB50010—2002,混凝土结构设计规范[S].GB 50010—2002,Code for Design of Concrete Struc-tures[S].
[24]BYRNE R J,COTTON D,PORTERFIELD J,et al.Manual for Design and Construction Monitoring ofSoil Nail Walls[R].Washington DC:Federal High-way Administration,1998.
[25]GB50011—2010,建筑抗震设计规范[S].GB 50011—2010,Code for Seismic Design of Building[S]
[2]朱彦鹏,王秀丽,张贵文,等.兰州中广大厦超长深基坑支护的设计、施工与实验监测[J].工程力学,2003(增):336-341.ZHU Yan-peng,WANG Xiu-li,ZHANG Gui-wen,et al.Design,Construction and Experimental Monito-ring of Lengthy Deep Foundation in ZhongguangBuilding of Lanzhou[J].Engineering Mechanics,2003(S):336-341.
[3]董建华.地震作用土钉支护边坡动力分析与抗震设计方法研究[D].兰州:兰州理工大学,2008.DONG Jian-hua.Study on Dynamic Analysis and Seis-mic Design of Slope Protected by Soil Nailing Retai-ning Wall Under Earthquake[D].Lanzhou:LanzhouUniversity of Technology,2008.
[4]VUCETIC M,TUFENKJIAN M R,DOROUDIANM.Dynamic Centrifuge Testing of Soil-nailed Excava-tions[J].Geotechnical Testing Journal,1993,16(2):172-187.
[5]COLLIN J G,CHOUERY CURTIS V E,BERG R R.Field Observations of Reinforced Soil Structures Un-der Seismic Loading[C]//OTANA J,MIYATA Y,MUKUNOKI T.Proceedings of the InternationalSymposium on Earth Reinforcement.Rotterdam:Balkema,1992:223-228.
[6]HANNA S,JURAN I,LEVY O,et al.Recent Devel-opments in Soil-nailing:Design and Practice[J].Jour-nal of Engineering and Applied Science,1998,81:259-284.
[7]COTTON P E,DAVID M,LUARK P F,et al.Seis-mic Response and Extended Life Analysis of the Dee-pest Top-down Soil Nail Wall in the U.S.[J].Geotechnical Special Publication,2004,124:723-740.
[8]陈建仁.土钉加筋边坡之耐震研究[D].台北:台湾大学,2001.CHEN Jian-ren.Study on the Anti-earthquake of SoilNailed Slopes[D].Taipei:Taiwan University,2001.
[9]赖荣毅.土钉模型边坡动态反应仿真[D].台北:台湾大学,2003.LAI Rong-yi.Dynamic Response Simulation of SoilNailed Slope Model[D].Taipei:Taiwan University,2003.
[10]张明聚,吕奇,王诚浩,等.土钉支护结构体系动力性能的振动台试验研究[J].北京工业大学学报,2011,37(6):822-828.ZHANG Ming-ju,LU Qi,WANG Cheng-hao,et al.Shaking Table Test for Aseismic Behavior of the Soil-nail Supporting System[J].Journal of Beijing Univer-sity of Technology,2011,37(6):822-828.
[11]王丽萍,张嘎,张建民,等.土钉加固黏性土坡动力离心模型试验研究[J].岩石力学与工程学报,2009,28(6):1226-1230.WANG Li-ping,ZHANG Ga,ZHANG Jian-min,et al.Dynamic Centrifuge Modeling Test of CohesiveSoil Slope Reinforced with Soil Nailing[J].ChineseJournal of Rock Mechanics and Engineering,2009,28(6):1226-1230.
[12]董建华,朱彦鹏.地震作用下土钉支护高速公路边坡动力参数分析[J].西安建筑科技大学学报:自然科学版,2007,39(5):661-666.DONG Jian-hua,ZHU Yan-peng.Parametric Analysison Seismic Behavior of Highway Slope Protected bySoil Nailing Retaining Wall Under Earthquake[J].Journal of Xi'an University of Architecture&Tech-nology:Natural Science Edition,2007,39(5):661-666.
[13]董建华,朱彦鹏.土钉边坡支护结构动力计算方法研究[J].振动与冲击,2011,30(2):217-221.DONG Jian-hua,ZHU Yan-peng.Dynamic CalculationMethod for Soil Nailing Supporting Structure[J].Journal of Vibration and Shock,2011,30(2):217-221.
[14]董建华,朱彦鹏.地震作用下土钉支护边坡永久位移计算方法研究[J].工程力学,2011,28(10):101-110.DONG Jian-hua,ZHU Yan-peng.Permanent Dis-placement Assessment of Slope Protected by SoilNailing Retaining Wall Under Earthquake[J].Engi-neering Mechanics,2011,28(10):101-110.
[15]克拉夫R,彭津J.结构动力学[M].王光远,译.北京:科学出版社,1981.CLOUGH R,PENZIEN J.Dynamics of Structure[M].Translated by WANG Guang-yuan.Beijing:Sci-ence Press,1981.
[16]谢定义.土动力学[M].西安:西安交通大学出版社,1998.XIE Ding-yi.Soil Dynamics[M].Xi'an:Xi'an JiaotongUniversity Press,1998.
[17]徐芝纶.弹性力学简明教程[M].3版.北京:高等教育出版社,2002.XU Zhi-lun.Elastic Mechanics Concise Course[M].3rd ed.Beijing:Higher Education Press,2002.
[18]陈希哲.土力学地基基础[M].4版.北京:清华大学出版社,2004.CHEN Xi-zhe.Soil Mechanics and Foundation[M].4th ed.Beijing:Tsinghua University Press,2004.
[19]JGJ120—99,建筑深基坑支护技术规程[S].JGJ 120—99,Technical Specification for Retainingand Protection of Building Foundation Excavations[S].
[20]KAGAWA T.Lateral Pile-group Response UnderSeismic Loading[J].Soils and Foundations,1983,23(4):75-86.
[21]SEED H B,IDRISS I M.Soil Moduli and DampingFactors for Dynamic Response Analysis[R].Berke-ley:Earthquake Research Engineering Center,Univer-sity of California,1970.
[22]胡聿贤.地震工程学[M].北京:地震出版社,1988.HU Yu-xian.Earthquake Engineering[M].Beijing:Earthquake Press,1988.
[23]GB50010—2002,混凝土结构设计规范[S].GB 50010—2002,Code for Design of Concrete Struc-tures[S].
[24]BYRNE R J,COTTON D,PORTERFIELD J,et al.Manual for Design and Construction Monitoring ofSoil Nail Walls[R].Washington DC:Federal High-way Administration,1998.
[25]GB50011—2010,建筑抗震设计规范[S].GB 50011—2010,Code for Seismic Design of Building[S]
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