挡土结构地震惯性力沿高度分布系数研究
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摘要
通过利用波动有限元技术,对挡土结构土体系的动力反应状态进行估算,研究地震作用下挡土墙和桥台的加速度沿高度分布系数,为提出沿高度分布系数建议提供依据。本研究设定人工边界条件,运用透射公式以简化波动有限元算法,对不同高度的6类挡土墙以及2个扩大基础桥台等在18条地震波输入下的地震反应进行估算,得到挡土墙地震最大加速度反应规律,最终总结得到挡土结构地震惯性力沿高度分布规律,并为抗震设计规范的修编提出建议。
Based on the finite element analysis for wave motion techniques,the dynamic response of retaining structures was estimated to research acceleration distribution coefficients of retaining walls and abutments during earthquake.According to artificial boundary settings and by applying transmission model to simplify finite element calculation,the responses of 6 retaining walls with different heights and 2 abutments with spreading foundation under 18 seismic waves were analyzed,and the response pattern of maximum acceleration of retaining walls under earthquake was obtained.Finally,the height distribution pattern of the inertia force of the retaining structures under earthquake inertia force was summed up,and suggestions for modification of specification of anti-seismic design were made.
Based on the finite element analysis for wave motion techniques,the dynamic response of retaining structures was estimated to research acceleration distribution coefficients of retaining walls and abutments during earthquake.According to artificial boundary settings and by applying transmission model to simplify finite element calculation,the responses of 6 retaining walls with different heights and 2 abutments with spreading foundation under 18 seismic waves were analyzed,and the response pattern of maximum acceleration of retaining walls under earthquake was obtained.Finally,the height distribution pattern of the inertia force of the retaining structures under earthquake inertia force was summed up,and suggestions for modification of specification of anti-seismic design were made.
引文
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[3]霍俊荣.地震动峰值参数衰减规律的研究[J].地震工程与工程振动,1999,11(2):69-79.HUO Junrong.Research on Attenuation Rule of Peak Parame-ters for Ground Motion[J].Earthquake Engineering and Engi-neering Vibration,1999,11(2):69-79.
[4]陈学良.挡土墙地震反应的波动模拟分析[D].中国地震局工程力学研究所,2001.CHEN Xueliang.Wave Motion Simulation Analysis of RetainingWall Seismic Response[D].Institute of Engineering Mechan-ics of China Earthquake Administration,2001.
[5]中华人民共和国建设部.GB 50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.P.R.China.Ministry of Construction.GB 50011-2001 Code forSeismic Design of Buildings[S].Beijing:China Architecture&Building Press,2001.
[6]廖振鹏.工程波动理论导论[M].北京:科学出版社,2002.LIAO Zhenpeng.Introduction to Wave Motion Theories for En-gineering[M].Beijing:Science Press,2002.
[7]陈忠达,汪东升,王志谦.悬锚式挡土墙有限元分析[J].公路交通科技,2005,22(1):38-41.CHEN Zhongda,WANG Dongsheng,WANG Zhiqian,etal.The Finite Element Analysis of Suspended-anchor Earth Re-taining Wall[J].Journal of Highway and Transportation Re-search and Development,2005,22(1):38-41.
[8]刘晶波.波动的有限元模拟及复杂场地对地震动的影响[D].哈尔滨:中国地震局工程力学研究所,1989.LIU Jingbo.Motional Finite Elements Simulation and Effects ofComplex Site on Ground Motion[D].Harbin:Institute ofEngineering Mechanics of China Earthquake Administration,1989.
[9]杨柏坡,陈庆彬.显式有限元法在地震工程中的应用[J].世界地震工程,2003,8(4):30-51.YANG Baipo,CHEN Qingbin.Application of Explicit FiniteElement in Earthquake Engineering[J].World Earth QuakeEngineering,2003,8(4):30-51.
[10]陈宪麦.挡土结构抗震设计中两个重要问题的研究[D].哈尔滨:中国地震局工程力学研究所,2003.CHEN Xianmai.Research of Two Critical Issues on RetainingStructure Anti-shock Design[D].Harbin:Institute of Engi-neering Mechanics of China Earthquake Administration,2003.
[11]贺丽,周亦康,钱永久.塑料土工格栅加筋土挡土墙的有限元分析[J].公路交通科技,2003,20(3):37-39.HE Li,ZHOU Yikang,QIAN Yongjiu.Finite Element Analysisof Polymer Geogrids Reinforced Earth Retaining Wall[J].Journal of Highway and Transportation Research and Develop-ment,2003,20(3):37-39.
[12]ELGAMAL A W M,ALAMPALLI S.Earthquake Response ofRetaining Walls:Full Scale Testing and Computational Analysis[J].Earthuake Engineering,10WCEE,1992:1671-1676.
[2]周正华.地基土介质阻尼和辐射阻尼的数值模拟[D].哈尔滨:中国地震局工程力学研究所,2000.ZHOU Zhenghua.Numerical Simulation of Soil Material Damp-ing and Radiation Damping[D].Harbin:Institute of Engi-neering Mechanics of China Earthquake Administration,2000.
[3]霍俊荣.地震动峰值参数衰减规律的研究[J].地震工程与工程振动,1999,11(2):69-79.HUO Junrong.Research on Attenuation Rule of Peak Parame-ters for Ground Motion[J].Earthquake Engineering and Engi-neering Vibration,1999,11(2):69-79.
[4]陈学良.挡土墙地震反应的波动模拟分析[D].中国地震局工程力学研究所,2001.CHEN Xueliang.Wave Motion Simulation Analysis of RetainingWall Seismic Response[D].Institute of Engineering Mechan-ics of China Earthquake Administration,2001.
[5]中华人民共和国建设部.GB 50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.P.R.China.Ministry of Construction.GB 50011-2001 Code forSeismic Design of Buildings[S].Beijing:China Architecture&Building Press,2001.
[6]廖振鹏.工程波动理论导论[M].北京:科学出版社,2002.LIAO Zhenpeng.Introduction to Wave Motion Theories for En-gineering[M].Beijing:Science Press,2002.
[7]陈忠达,汪东升,王志谦.悬锚式挡土墙有限元分析[J].公路交通科技,2005,22(1):38-41.CHEN Zhongda,WANG Dongsheng,WANG Zhiqian,etal.The Finite Element Analysis of Suspended-anchor Earth Re-taining Wall[J].Journal of Highway and Transportation Re-search and Development,2005,22(1):38-41.
[8]刘晶波.波动的有限元模拟及复杂场地对地震动的影响[D].哈尔滨:中国地震局工程力学研究所,1989.LIU Jingbo.Motional Finite Elements Simulation and Effects ofComplex Site on Ground Motion[D].Harbin:Institute ofEngineering Mechanics of China Earthquake Administration,1989.
[9]杨柏坡,陈庆彬.显式有限元法在地震工程中的应用[J].世界地震工程,2003,8(4):30-51.YANG Baipo,CHEN Qingbin.Application of Explicit FiniteElement in Earthquake Engineering[J].World Earth QuakeEngineering,2003,8(4):30-51.
[10]陈宪麦.挡土结构抗震设计中两个重要问题的研究[D].哈尔滨:中国地震局工程力学研究所,2003.CHEN Xianmai.Research of Two Critical Issues on RetainingStructure Anti-shock Design[D].Harbin:Institute of Engi-neering Mechanics of China Earthquake Administration,2003.
[11]贺丽,周亦康,钱永久.塑料土工格栅加筋土挡土墙的有限元分析[J].公路交通科技,2003,20(3):37-39.HE Li,ZHOU Yikang,QIAN Yongjiu.Finite Element Analysisof Polymer Geogrids Reinforced Earth Retaining Wall[J].Journal of Highway and Transportation Research and Develop-ment,2003,20(3):37-39.
[12]ELGAMAL A W M,ALAMPALLI S.Earthquake Response ofRetaining Walls:Full Scale Testing and Computational Analysis[J].Earthuake Engineering,10WCEE,1992:1671-1676.
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