结构面对岩质边坡地震动影响的数值模拟研究
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摘要
本文采用数值模拟的方法,利用UDEC软件,开展了结构面对岩质边坡地震动影响的数值模拟研究,研究内容涉及结构面产状和位置变化对岩体边坡地震动放大系数空间展布的影响。根据岩体边坡中结构面发育的一般规律,本文模型工况主要考虑与坡面相交的贯穿性结构面,模拟的主要物理对象是层面、贯穿性长大软弱结构面等。数值模拟结果表明:结构面越靠近坡顶,边坡上部的地震动响应越强烈;顺倾结构面会使坡肩部形成更强烈的地震动响应;边坡越陡,坡顶和坡肩部的地震动响应越强烈。上述规律对于岩质边坡地震稳定性分析具有指导意义。
Numerical simulation with software UDEC is conducted to study the influence of structural planes on the earthquake motion on rock slopes..The study deals with the influence of varying attitudes and positions of structure planes on the amplification of earthquake motion on rock slopes.According to general situations of structure planes developing in rock slopes,this study focuses on penetrating structural planes intersecting with the slope surface.And the primary objectives of simulation are strata layers and long penetrating weak structural planes.The results show that the closer the structural plane to the top surface of the slope,the stronger the earthquake response of the slope is.The structural plane downward to the slope surface will cause stronger earthquake motion on the upper slope body than that caused by structural planes horizontal or anti-dip to the slope surface.A steeper slope surface can produce stronger earthquake motion on the top or shoulder of the slope.The laws above mentioned will be valuable references to the earthquake stability analysis of rock slopes.
Numerical simulation with software UDEC is conducted to study the influence of structural planes on the earthquake motion on rock slopes..The study deals with the influence of varying attitudes and positions of structure planes on the amplification of earthquake motion on rock slopes.According to general situations of structure planes developing in rock slopes,this study focuses on penetrating structural planes intersecting with the slope surface.And the primary objectives of simulation are strata layers and long penetrating weak structural planes.The results show that the closer the structural plane to the top surface of the slope,the stronger the earthquake response of the slope is.The structural plane downward to the slope surface will cause stronger earthquake motion on the upper slope body than that caused by structural planes horizontal or anti-dip to the slope surface.A steeper slope surface can produce stronger earthquake motion on the top or shoulder of the slope.The laws above mentioned will be valuable references to the earthquake stability analysis of rock slopes.
引文
Chen Shu-jun,Dang Xiao-ying,Zen Xin-chuan,Luo Deng-gui.2004.Seismic stability analysis of slope at north bank of FengjieChangjiang River Bridge[J].Chinese Journal of Rock Mechanicsand Engineering,23(4):657-662(in Chinese with English ab-stract)
He Yun-long,Lu Shu-yuan.1998.A method for calculating the seis-mic action in rock slope[J].Chinese Journal of Geotechnical Engi-neering,20(2):66-68(in Chinese)
Hong Hai-chun,Xu Wei-ya.2005.Review on the stability of rockslopes under seismic loading[J].Chinese Journal of Rock Mechan-ics and Engineering,24(supp1):4827-4835(in Chinese withEnglish abstract)
Keefer D V.1984.Landslides caused by earthquakes[J].GeologicalSociety of America Bulletin,95(4):406-421
L.Siad.2003.Seismic stability analysis of fractured rock slopes by yielddesign theory[J].Soil Dynamics and Earthquake Engineering,23:203-212
Li Wei-guang,Zhang Ji-chun.2007.Equivalent static stability studyon rock mass bedding slope under blasting[J].Journal of MountainScience,25(2):184-189(in Chinese with English abstract)
Ling H.I,Cheng,Alexander H.D.1997.Rock Sliding Induced by Seis-mic Force[J].International Journal of Rock Mechanics and MiningScience,4(6):1021-1029
Liu Hong-shuai.2006.Study on analysis method of rock slope seismicstability[D].Harbin:Institute of Engineering Mechanics,ChinaEarthquake Administration:30-36(in Chinese with English ab-stract)
Newmark N.M.1965.Effects of earthquakes on dams and embankments[J].Geotechnique,15(2):139-160
Qi Sheng-wen,Wu Fa-quan,Liu Chun-ling,Ding Yan-hui.2004.Engineering Geology Analysis on stability of slope under earthquake[J].Chinese Journal of Rock Mechanics and Engineering,23(16):2792-2797(in Chinese with English abstract)
Qi Sheng-wen,Wu Fa-quan,Sun Jin-zhong.2003.Study on dynam-ic response of the slope[J].Science in China Series E,33(Sup.):28-41(in Chinese with English abstract)
Qi Sheng-wen.2002.Dynamic response analysis of slope and the ap-plied research[D].Beijing:Institute of Geology and Geophysics,Chinese Academy of Sciences:40-45(in Chinese with English ab-stract)
Qi Sheng-wen.2007.Evaluation of the permanent displacement of rockmass slope considering deterioration of slide surface during earth-quake[J].Chinese Journal of Geotechnical Engineering,29(3):452-457(in Chinese with English abstract)
R.Baker,R.Shukha,V.Operstein,S.Frydman.2006.Stability Chartsfor pseudo-static slope stability analysis[J].Soil Dynamics andEarthquake Engineering,26:813-823
Shi Dan,Chen Yun-sheng,Han Xin,Chen gang.2006.The evaluationof seismic dynamic stability of rock slope[J].Journal of NorthwestSci-Tech University of Agriculture and Forestry(Natural ScienceEdition),34(2):147-152(in Chinese with English abstract)
Shi Yu-cheng,Wang Lan-min,Zhang Ying.1999.Effects of Overbur-den Thickness And Topography of Loessial Sites on EarthquakeGround Motion[J].Northwestern Seismological Joural,21(2):203-207(in Chinese)
Su Sheng-rui,Zhu He-hua,Wang Shi-tian,Stephansson Ove.2003.Effect of physical and mechanical properties of rocks on stress filedin the vicinity of fractures[J].Chinese Journal of Rock Mechanicsand Engineering,22(3):370-377(in Chinese with English ab-stract)
Xu Guang-xing,Yao Ling-kan,Li Zhao-hong,Gao Shao-ning.2008.Dynamic response of slopes under earthquakes and influenceof ground motion parameters[J].Chinese Journal of GeotechnicalEngineering,30(6):918-923(in Chinese with English abstract)
Yao Ai-jun,Su Yong-hua.2003.A method for stability of slope engi-neering with complicated rock-mass[J].China Civil EngineeringJournal,36(11):34-37(in Chinese with English abstract)
陈蜀俊,党晓英,曾心传,罗登贵.2004.奉节长江大桥北岸在地震荷载作用下的稳定性分析[J].岩石力学与工程学报,23(4):657-662.
何蕴龙,陆述远.1998.岩石边坡地震作用近似计算方法[J].岩土工程学报,20(2),66-68
洪海春,徐卫亚.2005.地震作用下岩质边坡稳定性分析综述[J].岩石力学与工程学报,24(supp1):4827-4835
李维光,张继春.2007.地震作用下顺层岩质边坡稳定性的拟静力分析[J].山地学报,25(2):184-189
刘红帅.2006.岩质边坡地震稳定性分析方法研究[D].哈尔滨:中国地震局工程力学研究所:30-36
祁生文,伍法权,刘春玲,丁彦慧.2004.地震边坡稳定性的工程地质分析[J].岩石力学与工程学报,23(16):2792-2797
祁生文,伍法权,孙进忠.2003.边坡动力响应规律研究[J].中国科学(E辑,科学技术),33(增刊):28-41
祁生文.2002.边坡动力响应分析及应用研究[D].北京:中国科学院地质与地球物理研究所:40-45
祁生文.2007.考虑结构面退化的岩质边坡地震永久位移研究[J].岩土工程学报,29(3):452-457
石玉成,王兰民,张颖.1999.黄土场地覆盖层厚度和地形条件对地震动放大效应的影响[J].西北地震学报,21(2):203-207
史丹,陈蕴生,韩信,陈刚.2006.岩质边坡地震动力稳定性研究进展[J].西北农林科技大学学报(自然科学版),34(2):147-152
苏生瑞,朱合华,王士天,Stephansson Ove.2003.岩石物理力学性质对断裂附近地应力场的影响[J].岩石力学与工程学报,22(3):370-377
徐光兴,姚令侃,李朝红,高召宁.2008.边坡地震动力响应规律及地震动参数影响研究[J].岩土工程学报,30(6):918-923
姚爱军,苏永华.2003.复杂岩质边坡锚固工程地震敏感性分析[J].土木工程学报,36(11):34-37
He Yun-long,Lu Shu-yuan.1998.A method for calculating the seis-mic action in rock slope[J].Chinese Journal of Geotechnical Engi-neering,20(2):66-68(in Chinese)
Hong Hai-chun,Xu Wei-ya.2005.Review on the stability of rockslopes under seismic loading[J].Chinese Journal of Rock Mechan-ics and Engineering,24(supp1):4827-4835(in Chinese withEnglish abstract)
Keefer D V.1984.Landslides caused by earthquakes[J].GeologicalSociety of America Bulletin,95(4):406-421
L.Siad.2003.Seismic stability analysis of fractured rock slopes by yielddesign theory[J].Soil Dynamics and Earthquake Engineering,23:203-212
Li Wei-guang,Zhang Ji-chun.2007.Equivalent static stability studyon rock mass bedding slope under blasting[J].Journal of MountainScience,25(2):184-189(in Chinese with English abstract)
Ling H.I,Cheng,Alexander H.D.1997.Rock Sliding Induced by Seis-mic Force[J].International Journal of Rock Mechanics and MiningScience,4(6):1021-1029
Liu Hong-shuai.2006.Study on analysis method of rock slope seismicstability[D].Harbin:Institute of Engineering Mechanics,ChinaEarthquake Administration:30-36(in Chinese with English ab-stract)
Newmark N.M.1965.Effects of earthquakes on dams and embankments[J].Geotechnique,15(2):139-160
Qi Sheng-wen,Wu Fa-quan,Liu Chun-ling,Ding Yan-hui.2004.Engineering Geology Analysis on stability of slope under earthquake[J].Chinese Journal of Rock Mechanics and Engineering,23(16):2792-2797(in Chinese with English abstract)
Qi Sheng-wen,Wu Fa-quan,Sun Jin-zhong.2003.Study on dynam-ic response of the slope[J].Science in China Series E,33(Sup.):28-41(in Chinese with English abstract)
Qi Sheng-wen.2002.Dynamic response analysis of slope and the ap-plied research[D].Beijing:Institute of Geology and Geophysics,Chinese Academy of Sciences:40-45(in Chinese with English ab-stract)
Qi Sheng-wen.2007.Evaluation of the permanent displacement of rockmass slope considering deterioration of slide surface during earth-quake[J].Chinese Journal of Geotechnical Engineering,29(3):452-457(in Chinese with English abstract)
R.Baker,R.Shukha,V.Operstein,S.Frydman.2006.Stability Chartsfor pseudo-static slope stability analysis[J].Soil Dynamics andEarthquake Engineering,26:813-823
Shi Dan,Chen Yun-sheng,Han Xin,Chen gang.2006.The evaluationof seismic dynamic stability of rock slope[J].Journal of NorthwestSci-Tech University of Agriculture and Forestry(Natural ScienceEdition),34(2):147-152(in Chinese with English abstract)
Shi Yu-cheng,Wang Lan-min,Zhang Ying.1999.Effects of Overbur-den Thickness And Topography of Loessial Sites on EarthquakeGround Motion[J].Northwestern Seismological Joural,21(2):203-207(in Chinese)
Su Sheng-rui,Zhu He-hua,Wang Shi-tian,Stephansson Ove.2003.Effect of physical and mechanical properties of rocks on stress filedin the vicinity of fractures[J].Chinese Journal of Rock Mechanicsand Engineering,22(3):370-377(in Chinese with English ab-stract)
Xu Guang-xing,Yao Ling-kan,Li Zhao-hong,Gao Shao-ning.2008.Dynamic response of slopes under earthquakes and influenceof ground motion parameters[J].Chinese Journal of GeotechnicalEngineering,30(6):918-923(in Chinese with English abstract)
Yao Ai-jun,Su Yong-hua.2003.A method for stability of slope engi-neering with complicated rock-mass[J].China Civil EngineeringJournal,36(11):34-37(in Chinese with English abstract)
陈蜀俊,党晓英,曾心传,罗登贵.2004.奉节长江大桥北岸在地震荷载作用下的稳定性分析[J].岩石力学与工程学报,23(4):657-662.
何蕴龙,陆述远.1998.岩石边坡地震作用近似计算方法[J].岩土工程学报,20(2),66-68
洪海春,徐卫亚.2005.地震作用下岩质边坡稳定性分析综述[J].岩石力学与工程学报,24(supp1):4827-4835
李维光,张继春.2007.地震作用下顺层岩质边坡稳定性的拟静力分析[J].山地学报,25(2):184-189
刘红帅.2006.岩质边坡地震稳定性分析方法研究[D].哈尔滨:中国地震局工程力学研究所:30-36
祁生文,伍法权,刘春玲,丁彦慧.2004.地震边坡稳定性的工程地质分析[J].岩石力学与工程学报,23(16):2792-2797
祁生文,伍法权,孙进忠.2003.边坡动力响应规律研究[J].中国科学(E辑,科学技术),33(增刊):28-41
祁生文.2002.边坡动力响应分析及应用研究[D].北京:中国科学院地质与地球物理研究所:40-45
祁生文.2007.考虑结构面退化的岩质边坡地震永久位移研究[J].岩土工程学报,29(3):452-457
石玉成,王兰民,张颖.1999.黄土场地覆盖层厚度和地形条件对地震动放大效应的影响[J].西北地震学报,21(2):203-207
史丹,陈蕴生,韩信,陈刚.2006.岩质边坡地震动力稳定性研究进展[J].西北农林科技大学学报(自然科学版),34(2):147-152
苏生瑞,朱合华,王士天,Stephansson Ove.2003.岩石物理力学性质对断裂附近地应力场的影响[J].岩石力学与工程学报,22(3):370-377
徐光兴,姚令侃,李朝红,高召宁.2008.边坡地震动力响应规律及地震动参数影响研究[J].岩土工程学报,30(6):918-923
姚爱军,苏永华.2003.复杂岩质边坡锚固工程地震敏感性分析[J].土木工程学报,36(11):34-37
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