非一致性地震作用下跨越地裂缝结构的动力响应研究
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摘要
在西安市地裂缝活动性逐渐减弱并趋于稳定的背景下,以西安唐延路地下人防工程处f4地裂缝为研究对象,进行了跨越地裂缝结构有限单元类型选择,利用有限元ABAQUS分析软件建立了普通场地和地裂缝场地上考虑配筋位置和数量的三维实体框架结构精细化模型,并将计算结果与地裂缝振动台模型试验结果进行了对比。通过框架结构层间位移及位移角定量分析,找出了非一致地震激励下地裂缝对上部框架结构的影响规律。计算结果表明,地震作用时地裂缝的存在加剧了上部结构的破坏,跨地裂缝结构的地震响应与地震类型、地震强度、楼层位置有关。随着地震强度的增大,跨地裂缝结构动力响应显著增大。
The activity of ground fissures in Xi'an weakens gradually and tends to be stable. Taking the ground fissure f4 in Tangyan Road as the research object,the finite element type selection of the spanning ground crack structure was carried out. Various parameters of a refined model in the structure across ground fissure were analyzed quantitatively by using ABAQUS software. Then,the 3D solid refined models of the frame structure in common site and ground fissure site were established,which considered the position and quantity of rebar. The calculated results were compared with the results of shaking table test for ground fissure. Based on the quantitative analysis of the displacement and displacement angle of the frame,the influence of the ground fissure on the frame structure under excitation of the non-uniform seismic was obtained. Calculation results show that the existence of ground fissure aggravated the damage of the superstructure during earthquake,and the seismic response of the structure is related to the type of earthquake,the intensity of the earthquake,and the location of the floor. In addition,along with the increase of seismic intensity,the dynamic response of the ground fissure increased significantly.
The activity of ground fissures in Xi'an weakens gradually and tends to be stable. Taking the ground fissure f4 in Tangyan Road as the research object,the finite element type selection of the spanning ground crack structure was carried out. Various parameters of a refined model in the structure across ground fissure were analyzed quantitatively by using ABAQUS software. Then,the 3D solid refined models of the frame structure in common site and ground fissure site were established,which considered the position and quantity of rebar. The calculated results were compared with the results of shaking table test for ground fissure. Based on the quantitative analysis of the displacement and displacement angle of the frame,the influence of the ground fissure on the frame structure under excitation of the non-uniform seismic was obtained. Calculation results show that the existence of ground fissure aggravated the damage of the superstructure during earthquake,and the seismic response of the structure is related to the type of earthquake,the intensity of the earthquake,and the location of the floor. In addition,along with the increase of seismic intensity,the dynamic response of the ground fissure increased significantly.
引文
[1]黄强兵,彭建兵,闫金凯,等.地裂缝活动对土体应力与变形影响的试验研究[J].岩土力学,2009,30(4):903-908.HUANG Qiangbing,PENG Jianbing,YAN Jinkai,et al.Model test study of influence of ground fissure movement on stress and deformation of soil mass[J].Rock and Soil Mechanics,2009,30(4):903-908.
[2]焦珣,苏小四,于军,等.苏锡常地裂缝危险性分区[J].吉林大学学报(地球科学版),2009,39(1):142-146.JIAO Xun,SU Xiaosi,YU Jun,et al.Fatalness zoning of earth fissure harzard in Suzhou-wuxi-changzhou area[J].Journal of Jilin University(Earth Science Edition),2009,39(1):142-146.
[3]王景明.地裂缝及其灾害的理论与应用[M].西安:陕西科学技术出社,2000.
[4]孙绍平,韩阳.生命线地震工程研究述评[J].土木工程学报,2003,36(5):97-104.SUN Shaoping,HAN Yang.State-of-the-art of the research on lifeline earthquake engineering[J].China Civil Engineering journal,2003,36(5):97-104.
[5]张鹏.地裂缝在近地表土层中的破裂行为研究[D].西安:长安大学,2012.
[6]何玉阳,袁泉.基于振动台试验的框支密肋复合墙结构弹塑性有限元分析[J].振动与冲击,2015,34(13):205-210.HE Yuyang,YUAN Quan.Frame supported multi ribbed composite wall structure elastic-plastic finite element analysis based on vibration test[J].Journal of Vibration and Shock,2015,34(13):205-210.
[7]西北综合勘测设计研究院.唐延路地下人防工程岩土工程地勘报[R].2013.
[8]胡志平,赵振荣,朱启东,等.西安某地裂缝两侧黄土物理力学性质试验[J].地球科学与环境学报,2009,31(1):85-88.HU Zhiping,ZHAO Zhenrong,ZHU Qidong,et al.Experimental study on physical mechanic property of loess near ground fissure in Xi’an[J].Journal of Earth Sciences and Environment,2009,31(1):85-88.
[9]李忠生,刘芳,高铎文,等.西安地裂缝变形带中的剪切波速测试分析[J].水文地质工程地质,2008,35(6):95-98.LI Zhongsheng,LIU Fang,GAO Duowen,et al.Tests and analyses of shearing wave velocity in the Xi'an earth fissure deforming belt[J].Hydrogeology&Engineering Geology,2008,35(6):95-98.
[10]廖振鹏,刘晶波.波动有限元模拟的基本问题[J].中国科学(B辑化学生命科学地学),1992(8):874-882.LIAO Zhenpeng,LIU Jingbo.Basic problems in finite element simulation of wave[J].Science china(Chemistry life sciences B),1992(8):874-882.
[11]刘晶波,吕彦东.结构-地基动力相互作用问题分析的一种直接方法[J].土木工程学报,1998,31(3):55-64.LIU Jingbo,LYandong.A direct method for analysis of dynamic soil-structure interaction[J].China Civil Engineering Journal,1998,31(3):55-64.
[12]谷音,刘晶波,杜义欣,等.三维一致黏弹性人工边界及等效黏弹性边界单元[J].工程力学,2007,24(12):31-37.GU Yin,LIU Jingbo,DU Yixin,et al.3D consistent viscousspring artificial boundary and viscous-spring boundary element[J].Engineering Mechanics,2007,24(12):31-37.
[13]高峰,赵冯兵.地下结构静一动力分析中的人工边界转换方法研究[J].振动与冲击,2011,30(11):165-170.GAO Feng,ZHAO Fengbing.Study on transformation method for artificial boundaries in static-dynamic analysis of underground structure[J].Journal of Vibration and Shock,2011,30(11):165-170.
[2]焦珣,苏小四,于军,等.苏锡常地裂缝危险性分区[J].吉林大学学报(地球科学版),2009,39(1):142-146.JIAO Xun,SU Xiaosi,YU Jun,et al.Fatalness zoning of earth fissure harzard in Suzhou-wuxi-changzhou area[J].Journal of Jilin University(Earth Science Edition),2009,39(1):142-146.
[3]王景明.地裂缝及其灾害的理论与应用[M].西安:陕西科学技术出社,2000.
[4]孙绍平,韩阳.生命线地震工程研究述评[J].土木工程学报,2003,36(5):97-104.SUN Shaoping,HAN Yang.State-of-the-art of the research on lifeline earthquake engineering[J].China Civil Engineering journal,2003,36(5):97-104.
[5]张鹏.地裂缝在近地表土层中的破裂行为研究[D].西安:长安大学,2012.
[6]何玉阳,袁泉.基于振动台试验的框支密肋复合墙结构弹塑性有限元分析[J].振动与冲击,2015,34(13):205-210.HE Yuyang,YUAN Quan.Frame supported multi ribbed composite wall structure elastic-plastic finite element analysis based on vibration test[J].Journal of Vibration and Shock,2015,34(13):205-210.
[7]西北综合勘测设计研究院.唐延路地下人防工程岩土工程地勘报[R].2013.
[8]胡志平,赵振荣,朱启东,等.西安某地裂缝两侧黄土物理力学性质试验[J].地球科学与环境学报,2009,31(1):85-88.HU Zhiping,ZHAO Zhenrong,ZHU Qidong,et al.Experimental study on physical mechanic property of loess near ground fissure in Xi’an[J].Journal of Earth Sciences and Environment,2009,31(1):85-88.
[9]李忠生,刘芳,高铎文,等.西安地裂缝变形带中的剪切波速测试分析[J].水文地质工程地质,2008,35(6):95-98.LI Zhongsheng,LIU Fang,GAO Duowen,et al.Tests and analyses of shearing wave velocity in the Xi'an earth fissure deforming belt[J].Hydrogeology&Engineering Geology,2008,35(6):95-98.
[10]廖振鹏,刘晶波.波动有限元模拟的基本问题[J].中国科学(B辑化学生命科学地学),1992(8):874-882.LIAO Zhenpeng,LIU Jingbo.Basic problems in finite element simulation of wave[J].Science china(Chemistry life sciences B),1992(8):874-882.
[11]刘晶波,吕彦东.结构-地基动力相互作用问题分析的一种直接方法[J].土木工程学报,1998,31(3):55-64.LIU Jingbo,LYandong.A direct method for analysis of dynamic soil-structure interaction[J].China Civil Engineering Journal,1998,31(3):55-64.
[12]谷音,刘晶波,杜义欣,等.三维一致黏弹性人工边界及等效黏弹性边界单元[J].工程力学,2007,24(12):31-37.GU Yin,LIU Jingbo,DU Yixin,et al.3D consistent viscousspring artificial boundary and viscous-spring boundary element[J].Engineering Mechanics,2007,24(12):31-37.
[13]高峰,赵冯兵.地下结构静一动力分析中的人工边界转换方法研究[J].振动与冲击,2011,30(11):165-170.GAO Feng,ZHAO Fengbing.Study on transformation method for artificial boundaries in static-dynamic analysis of underground structure[J].Journal of Vibration and Shock,2011,30(11):165-170.