成兰铁路茂县车站高边坡抗震设计研究
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摘要
针对拟静力法的边坡传统抗震设计方法存在一些不足之处,基于强度折减动力分析法,提出一种边坡抗震设计新方法,该方法考虑了支护结构与岩土体在地震作用下的动力相互作用,能够满足边坡抗震和静力稳定性设计要求,利用该方法可得出支护结构的内力,确保了工程设计的安全性和经济性。通过对成都—兰州(成兰)铁路茂县车站高边坡抗震设计,描述该方法的具体实施过程,论证了此法的可行性,为支护边坡的抗震设计提供了一种新思路。
In traditional seismic design of slope,the most commonly used method is the pseudo-static method.Because of its limitations,a new method of seismic design of the slope is proposed based on the strength reduction dynamic analysis.The proposed method takes into account the interaction between the supporting structure and rock soil under earthquake.It can satisfy the design requirements of earthquake and static stability of slope.The internal forces of supporting structure are obtained by the method.So,it ensures the safety and economics of engineering design.The seismic design of high slope of Mao railway station demonstrates the feasibility of the proposed method in practice,which provides a new idea for the seismic design of retaining the slope.
In traditional seismic design of slope,the most commonly used method is the pseudo-static method.Because of its limitations,a new method of seismic design of the slope is proposed based on the strength reduction dynamic analysis.The proposed method takes into account the interaction between the supporting structure and rock soil under earthquake.It can satisfy the design requirements of earthquake and static stability of slope.The internal forces of supporting structure are obtained by the method.So,it ensures the safety and economics of engineering design.The seismic design of high slope of Mao railway station demonstrates the feasibility of the proposed method in practice,which provides a new idea for the seismic design of retaining the slope.
引文
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[16]叶海林,郑颖人,黄润秋,等.强度折减动力分析法在滑坡抗滑桩抗震设计中的应用研究[J].岩土力学,2010,31(增1):66–73.(YE Hailin,ZHENG Yingren,HUANG Runqiu,et al.Study of application of strength reduction dynamic analysis method to aseismic design of anti-slide piles for landslide[J].Rock and Soil Mechanics,2010,31(Supp.1):66–73.(in Chinese))
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[18]胡聿贤.地震工程学[M].北京:地震出版社,1988:58–63.(HU Yuxian.Seismic engineering[M].Beijing:Earthquake Press,1988:58–63.(in Chinese))
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[2]GRASSELLI G.3D Behavior of bolted rock joints:experimental and numerical study[J].International Journal of Rock Mechanics and Mining Sciences,2005,42(1):13–24.
[3]洪海春,徐卫亚.地震作用下岩体锚固性能研究综述与展望[J].金属矿山,2006,(3):5–11.(HONG Haichun,XU Weiya.Review and?4122?岩石力学与工程学报2011年prospect of anchorage properties of reinforced rockmass under earthquake[J].Metal Mine,2006,(3):5–11.(in Chinese))
[4]TANNANTF D D,BRUMMERF R K,YI X.Rock bolt behavior under dynamic loading:field tests and modeling[J].International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts,1995,32(6):537–550.
[5]薛亚东,张世平,康天合.回采巷道锚杆动载响应的数值分析[J].岩石力学与工程学报,2003,22(11):1903–1 906.(XUE Yadong,ZHANG Shiping,KANG Tianhe.Numerical analysis of dynamical response of rock boost in mining roadways[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(11):1 903–1 906.(in Chinese))
[6]董建华,朱彦鹏.框架锚杆支护边坡地震响应分析[J].兰州理工大学学报,2008,34(2):118–124.(DONG Jianhua,ZHU Yanpeng.Analysis of response of slope supported with framed anchor to earthquake[J].Journal of Lanzhou University of Technology,2008,34(2):118–124.(in Chinese))
[7]高峰,石玉成,韦凯.锚杆加固对石窟地震反应的影响[J].世界地震工程,2006,22(2):84–88.(GAO Feng,SHI Yucheng,WEI Kai.The influence of anchor bolt supports on seismic responsesof strengthening grottoes[J].World Earthquake Engineering,2006,22(2):84–88.(in Chinese))
[8]ZHANG C S,ZOU D H,MADENGA V.Numerical simulation of wave Propagation in grouted rock bolts and the effects of mesh density and wave frequency[J].International Journal of Rock Mechanics and Mining Sciences,2006,43(4):634–639.
[9]叶海林,郑颖人,黄润秋,等.锚杆支护岩质边坡地震动力响应分析[J].后勤工程学院学报,2010,26(4):1–7.(YE Hailin,ZHENG Yingren,HUANG Runqiu,et al.Analysis of dynamic response of rockboh in rock slope under earthquake[J].Journal of Logistical Engineering University,2010,26(4):1–7.(in Chinese))
[10]STAMATOPOULOSA C A,BASSANOUA M,BRENNANB A J,et al.Mitigation of the seismic motion near the edge of cliff-type topographies[J].Soil Dynamics and Earthquake Engineering,2007,27(1):1 082–1 100.
[11]于玉贞,邓丽军.抗滑桩加固边坡地震响应离心模型试验[J].岩土工程学报,2007,29(9):1 320–1 323.(YU Yuzhen,DENG Lijun.Centrifuge modeling of seismic behavior of slopes reinforced by stabilizing pile[J].Chinese Journal of Geotechnical Engineering,2007,29(9),1 320–1 323.(in Chinese))
[12]于玉贞,李荣建,柴霖,等.铜质模型桩加固边坡的动力离心模型试验研究[J].水文地质工程地质,2008,(5):41–46.(YU Yuzhen,LI Rongjian,CHAI Li,et al.Dynamic centrifuge test of slope reinforced with copper model piles[J].Hydrogeology Geological Engineering,2008,(5):41–46.(in Chinese))
[13]李荣建,于玉贞,吕禾.饱和砂土地基上抗滑桩加固边坡的动力离心模型试验研究[J].岩土力学,2009,30(4):897–902.(LI Rongjian,YU Yuzhen,LU He.Dynamic centrifuge modeling of piles-reinforced slope on saturated sandy foundation[J].Rock and Soil Mechanics,2009,30(4):897–902.
[14]陶云辉,周勇波,王伟峰.地震条件下双排抗滑桩受力分析[J].路基工程,2010,(2):163–166.(TAO Yunhui,ZHOU Yongbo,WANG Weifeng.Analysis on double anti-slide pile stress under seismic action[J].Subgrade Engineering,2010,(2):163–166.(in Chinese))
[15]罗渝,何思明,何尽川.地震作用下抗滑桩作用机制研究[J].长江科学院院报,2010,27(6):26–29.(LUO Yu,HE Siming,HE Jinchuan.Study on interaction between slope and stabiliz ing pile under seism loading[J].Journal of Yangtze River Scientific Research Institute,2010,26(4):26–29.(in Chinese))
[16]叶海林,郑颖人,黄润秋,等.强度折减动力分析法在滑坡抗滑桩抗震设计中的应用研究[J].岩土力学,2010,31(增1):66–73.(YE Hailin,ZHENG Yingren,HUANG Runqiu,et al.Study of application of strength reduction dynamic analysis method to aseismic design of anti-slide piles for landslide[J].Rock and Soil Mechanics,2010,31(Supp.1):66–73.(in Chinese))
[17]叶海林,郑颖人,黄润秋,等.岩质边坡锚杆支护参数地震敏感性分析[J].岩土工程学报,2010,32(9):1 374–1 379.(YE Hailin,ZHENG Yingren,HUANG Runqiu,et al.Sensitivity analysis of parameters for bolts in rock slopes under earthquakes[J].Chinese Journal of Geotechnical Engineering,2010,32(9):1 374–1 379.(in Chinese))
[18]胡聿贤.地震工程学[M].北京:地震出版社,1988:58–63.(HU Yuxian.Seismic engineering[M].Beijing:Earthquake Press,1988:58–63.(in Chinese))
[19]Itasca Consulting Group,Inc..FLAC3D(Fast Lagrangian analysis 3D)user′s manual,version3.0[R].USA:Itasca Consulting Group,Inc.,2003.
[20]中华人民共和国国家标准编写组.GB50267—297核电厂抗震设计规范[S].北京:中国建筑工业出版社,2003.(The National Standards Compilation Group of People′s Republic of China.GB50267—297 Code for seisic design of nuclear power plants[S].Beijing:China Architecture and Building Press,2003.(in Chinese))
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