高速公路线路地震断层破坏效应及边坡震害稳定性研究
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摘要
为研究高速公路线路地震断层破坏效应及边坡震害稳定性,首先对工程研究区域历史上所发生地震的空间分布做出定性分析,提出沿线地震断层模型,并分析其运动学特征。在此基础上,选取震害区具有代表性的路堑边坡基于ABAQUS有限元程序对其地震响应进行计算,程序输出的位移场用来分析坡顶位移变化,输出的加速度用来计算加速度分布系数。将动力有限元输出的应力场代入MATLAB编写的遗传算法程序,计算边坡安全系数时程曲线,并智能搜索临界滑动面,得到安全系数随着地震波加速度的变化规律及滑动面包络图的安全系数范围。
In order to study the destruction effect of the earthquake fault and seismic damage of slope stability in highway line,the qualitative analysis about earthquake distribution in the history of the engineering research area firstly has been done. Also the earthquakes fault model was put forward,and the kinematics characteristics were analyzed. Representative of the cutting slope has been selected in seismic damage area. And from that,ABAQUS finite element program has been used to calculate the earthquake response of the cutting slope. The displacement field output from program was used to analyze the slope displacement changes,the output of the acceleration was used to calculate the acceleration distribution coefficient. the dynamic finite element stress field in genetic algorithm program was output which programed by MATLAB. And the safety factor time history curve of slope has been calculated. Addionally,the critical slip surface of slope was intelligent searched,and in the end,the rule of safety factor is got as the change of seismic acceleration and the safety factor of sliding surface envelope.
In order to study the destruction effect of the earthquake fault and seismic damage of slope stability in highway line,the qualitative analysis about earthquake distribution in the history of the engineering research area firstly has been done. Also the earthquakes fault model was put forward,and the kinematics characteristics were analyzed. Representative of the cutting slope has been selected in seismic damage area. And from that,ABAQUS finite element program has been used to calculate the earthquake response of the cutting slope. The displacement field output from program was used to analyze the slope displacement changes,the output of the acceleration was used to calculate the acceleration distribution coefficient. the dynamic finite element stress field in genetic algorithm program was output which programed by MATLAB. And the safety factor time history curve of slope has been calculated. Addionally,the critical slip surface of slope was intelligent searched,and in the end,the rule of safety factor is got as the change of seismic acceleration and the safety factor of sliding surface envelope.
引文
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3 Nguyen V U.Determination of critical slip surface.Journal of Geotechnical Engineering.ASCE,1985;111:238—251
4 陈祖煜.土质边坡稳定分析.北京:中国水利水电出版社,2005Chen Z Y.The soil slope stability analysis.Beijing:China Water Power Press,2005
5 夏元友,李新平,程康.用人工神经网络估算岩质边坡的安全系数.工程地质学报,1998;6(2):155—159Xia Y Y,Li X P,Cheng K.Using artificial neural network to estimate the safety factor of rock slope.Journal of Engineering Geology,1998;6(2):155—159
6 Goh A T C.Genetic algorithm search for critical slip surface in multiwedge stability analysis.Canadian Geotechnical Journal,1991;36(2):383—391
7 傅鹤林,彭思甜,韩汝才,等.岩土工程数值分析新方法.长沙:中南大学出版社,2006:68—140Fu H L,Peng S T,Han R C,et al.The new method of numerical analysis of geotechnical engineering.Changsha:Central South University Press,2006:68—140
8 中华人民共和国住房和城乡建设部,中华人民共和国国家质量监督检验检疫总局.建筑抗震设计规范(GB 50011—2001).北京:中国建筑工业出版社,2010Housing and Urban-rural Development of the People's Republic of China,The State Administration of Quality Supervision,Inspection and Quarantine of the People's Republic of China.Earthquake resistant design code(GB 50011—2001).Beijing:China Architecture&Building Press,2010
9 刘晶波,谷音,杜义欣.一致黏弹性人工边界及黏弹性边界单元.岩土工程学报,2008;28(9):1070—1075Liu J B,Gu Y,Du Y X.Consistent and viscoelastic viscoelastic artificial boundary.Chinese Journal of Geotechnical Engineering,2008;28 (9):1070—1075
10 康永君.地震作用下边坡安全系数时程计算方法及应用研究.北京:清华大学,2009Kang Y J.Calculation method and application research for the timehistory of factor of fafety of slopes subjected to seismic load.Beijing:Tsinghua University,2009
11 肖专文,张其志,梁力,等.遗传进化算法在边坡稳定性分析中的应用.岩土工程学报,1998;20(1):44—46Xiao Z W,Zhang Q Z,Liang L,et al.The application of genetic evolutionary algorithm in the slope stability analysis.Chinese Journal of Geotechnical Engineering,1998;20(1):44—46
2 孙君实.条分法的数值分析.岩土工程学报,1984;6(2):1—12Sun J S.The method of numerical analysis.Chinese Journal of Geotechnical Engineering,1984;6(2):1—12
3 Nguyen V U.Determination of critical slip surface.Journal of Geotechnical Engineering.ASCE,1985;111:238—251
4 陈祖煜.土质边坡稳定分析.北京:中国水利水电出版社,2005Chen Z Y.The soil slope stability analysis.Beijing:China Water Power Press,2005
5 夏元友,李新平,程康.用人工神经网络估算岩质边坡的安全系数.工程地质学报,1998;6(2):155—159Xia Y Y,Li X P,Cheng K.Using artificial neural network to estimate the safety factor of rock slope.Journal of Engineering Geology,1998;6(2):155—159
6 Goh A T C.Genetic algorithm search for critical slip surface in multiwedge stability analysis.Canadian Geotechnical Journal,1991;36(2):383—391
7 傅鹤林,彭思甜,韩汝才,等.岩土工程数值分析新方法.长沙:中南大学出版社,2006:68—140Fu H L,Peng S T,Han R C,et al.The new method of numerical analysis of geotechnical engineering.Changsha:Central South University Press,2006:68—140
8 中华人民共和国住房和城乡建设部,中华人民共和国国家质量监督检验检疫总局.建筑抗震设计规范(GB 50011—2001).北京:中国建筑工业出版社,2010Housing and Urban-rural Development of the People's Republic of China,The State Administration of Quality Supervision,Inspection and Quarantine of the People's Republic of China.Earthquake resistant design code(GB 50011—2001).Beijing:China Architecture&Building Press,2010
9 刘晶波,谷音,杜义欣.一致黏弹性人工边界及黏弹性边界单元.岩土工程学报,2008;28(9):1070—1075Liu J B,Gu Y,Du Y X.Consistent and viscoelastic viscoelastic artificial boundary.Chinese Journal of Geotechnical Engineering,2008;28 (9):1070—1075
10 康永君.地震作用下边坡安全系数时程计算方法及应用研究.北京:清华大学,2009Kang Y J.Calculation method and application research for the timehistory of factor of fafety of slopes subjected to seismic load.Beijing:Tsinghua University,2009
11 肖专文,张其志,梁力,等.遗传进化算法在边坡稳定性分析中的应用.岩土工程学报,1998;20(1):44—46Xiao Z W,Zhang Q Z,Liang L,et al.The application of genetic evolutionary algorithm in the slope stability analysis.Chinese Journal of Geotechnical Engineering,1998;20(1):44—46
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