城市固体废弃物填埋场边坡地震响应分析
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摘要
随着城市化进程的加快,城市垃圾存放已成为政府部门的棘手问题,而城市垃圾填埋场的稳定问题已经引起有关部门的重视。采用有限元分析法,结合某城市垃圾填埋场所处场地地震特性,选择人工合成地震波作为地震动输入,分别考虑边坡在有衬垫层和无衬垫层条件,以及本构模型(HSsmall模型和摩尔-库仑模型)等影响因素,对影响填埋场边坡动力响应的因素进行分析。结果表明,衬垫层的存在对边坡动力响应影响较大,HSsmall本构模型反映了土在动力作用下的特性,计算的结果更合理。分析结果可为垃圾填埋场边坡动力响应规律的研究提供依据。
In the wake of acceleration of urbanization,the stability of municipal waste landfills should be paid attention to.Here,by using the finite element method and according to the characteristics of municipal waste landfills in a certain city,the influencing factors for dynamic response of the landfills are analyzed with selecting the synthetic seismic wave as the seismic input.The results show that the lining layers could affect the dynamic response greatly,and the constitutive model HSsmall could reflect the dynamic characteristics.The analysis results as mentioned above could provide the bases for studying the dynamic response of waste landfills.
In the wake of acceleration of urbanization,the stability of municipal waste landfills should be paid attention to.Here,by using the finite element method and according to the characteristics of municipal waste landfills in a certain city,the influencing factors for dynamic response of the landfills are analyzed with selecting the synthetic seismic wave as the seismic input.The results show that the lining layers could affect the dynamic response greatly,and the constitutive model HSsmall could reflect the dynamic characteristics.The analysis results as mentioned above could provide the bases for studying the dynamic response of waste landfills.
引文
[1]邓学晶,孔宪京.垃圾填埋场动力稳定机理及稳定分析研究现状与进展[J].世界地震工程,2007,23(4):59-61.
[2]Bray J D,Rathje E R.Earthquake-induced displacements of solid-waste landfills[J].Journal of Geotechnical Engineering,1998,124(3):242-253.
[3]Rathje E R,Bray J D.One and two-dimensional seismic analysis ofsolid-waste landfills[J].Canadian Geotechnical Journal,2001,38(3):850-862.
[4]陈云敏,等.垃圾填埋场沿衬垫界面的地震稳定性及永久位移分析[J].中国科学E辑:科学技术,2008,38(1):79-94.
[5]孔宪京,邓学晶.城市垃圾填埋场地震变形机理的振动台模型试验研究[J].土木工程学报,2008,41(5):65-74.
[6]CJJ17-2004.城市生活垃圾卫生填埋技术规范[S].北京:建筑工业出版社,2004.
[7]张国栋.基于反应谱的土与结构相互作用体系非平稳随机地震反应分析[J].振动与冲击,2005,24(4):31-34.
[8]董建华,朱彦鹏.地震作用下土钉支护边坡稳定性计算方法[J].振动与冲击,2009,28(3):119-124.
[9]彭伟,李建中.减隔震连续梁桥非经典阻尼问题与地震响应简化分析[J].振动与冲击,2009,28(1):146-151.
[2]Bray J D,Rathje E R.Earthquake-induced displacements of solid-waste landfills[J].Journal of Geotechnical Engineering,1998,124(3):242-253.
[3]Rathje E R,Bray J D.One and two-dimensional seismic analysis ofsolid-waste landfills[J].Canadian Geotechnical Journal,2001,38(3):850-862.
[4]陈云敏,等.垃圾填埋场沿衬垫界面的地震稳定性及永久位移分析[J].中国科学E辑:科学技术,2008,38(1):79-94.
[5]孔宪京,邓学晶.城市垃圾填埋场地震变形机理的振动台模型试验研究[J].土木工程学报,2008,41(5):65-74.
[6]CJJ17-2004.城市生活垃圾卫生填埋技术规范[S].北京:建筑工业出版社,2004.
[7]张国栋.基于反应谱的土与结构相互作用体系非平稳随机地震反应分析[J].振动与冲击,2005,24(4):31-34.
[8]董建华,朱彦鹏.地震作用下土钉支护边坡稳定性计算方法[J].振动与冲击,2009,28(3):119-124.
[9]彭伟,李建中.减隔震连续梁桥非经典阻尼问题与地震响应简化分析[J].振动与冲击,2009,28(1):146-151.
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