基于设计地震动的地震波斜入射波动输入研究
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摘要
为建立反映地表非一致性运动的地震动场、建立斜入射地震波与设计地震动之间的联系,将地表设计地震动分量看作斜入射的SV波和P波的叠加,根据固体介质中波的传播理论推导了斜入射SV波和P波时程与设计地震动分量的关系,结合粘弹性人工边界,得到了反映设计地震动的地震波斜入射条件下的解析方式,以此为基础建立了时域计算分析模型。半空间算例验证了该方法具有较好的精度,地表面各点的运动具有非一致特征。为计算大跨度结构非均匀地震动输入情况下的动力响应提供了一种有效的方法。
To establish the relation between oblique incidence wave and design seismic component,and structure wave field which can result in non uniform ground motion,the design seismic component was regarded as the result of oblique plane SV wave and oblique plane P wave.According to the theory of wave propagating in solid,both incidence angles and amplitudes of the oblique waves had deterministic relation.Based on viscous-spring artificial boundary condition,the time-domain calculating method for dynamic interaction between soil and structure object to obliquely incident seismic waves was developed.Half space example with simple ground motion and Koyna seismic horizontal history proved that this method has good precision and can produce similar seismic response to the design seismic component.With general FEM software,the method can be easily applied to the dynamic analysis of long span structure with non uniform ground motion.
To establish the relation between oblique incidence wave and design seismic component,and structure wave field which can result in non uniform ground motion,the design seismic component was regarded as the result of oblique plane SV wave and oblique plane P wave.According to the theory of wave propagating in solid,both incidence angles and amplitudes of the oblique waves had deterministic relation.Based on viscous-spring artificial boundary condition,the time-domain calculating method for dynamic interaction between soil and structure object to obliquely incident seismic waves was developed.Half space example with simple ground motion and Koyna seismic horizontal history proved that this method has good precision and can produce similar seismic response to the design seismic component.With general FEM software,the method can be easily applied to the dynamic analysis of long span structure with non uniform ground motion.
引文
[1]Takahiro S.Estimation of earthquake motion incident angle at rock site[C]//Proc of12th World Conference Earthquake Engineering.New Zealand.2000:956.
[2]Du Xiuli,Chen Wei,Li Liang,et al.Preliminary study of time-domain seismic response for underground structures to obliquely incident seismic waves[J].Technology for Earthquake Disaster Prevention,2007,2(3):290-296.[杜修力,陈维,李亮,等.斜入射条件下地下结构时域地震反应分析初探[J].震灾防御技术,2007,2(3):290-296.]
[3]Wang Qin,Chen Juan,Li Jie.Seismic response analysis of underground pipeline under obliquely incident seismic waves[J].J of HUST:Urban Science Edition,2008,25(4):283-286.[王琴,陈隽,李杰.斜入射地震波作用下地下管线的地震反应分析[J].华中科技大学学报:城市科学版,2008,25(4):283-286.]
[4]Huang Qiangbing,Peng Jianbing.Calculation about earthquake stress for underground pipeline based on the incident angle of earthquake wave[J].Chinese Journal of Underground Space and Engineering,2008,4(5):979-984.[黄强兵,彭建兵.基于地震波入射角的地下管道地震应力计算[J].地下空间与工程学报,2008,4(5):979-984.]
[5]Ma Xingdong,Li Haibo.Primary analysis of different incidence propagation on dynamic response of underground rock cavern under earthquake[J].Water Power,2007,33(1):23-25.[马行东,李海波.地震波入射方向对地下岩体洞室动态响应的初步分析[J].水力发电,2007,33(1):23-25.]
[6]Li Xiaojun,Lu Tao.Explicit finite element analysis of earthquake response for underground caverns of hydropower stations[J].Journal of Hydroelectric Engineering,2009,28(5):41-46.[李小军,卢滔.水电站地下厂房洞室群地震反应显式有限元分析[J].水力发电学报,2009,28(5):41-46.]
[7]Wegner J L,Yao M M,Zhang X.Dynamic wave-soil-structure interaction analysis in the time domain[J].Computers and Structures,2005,83:2206-2214.
[8]Wu Zhaoying.Study of the worst seismic motion input for earth-dam seismic stability under the oblique incidence condition[D].Harbin:Institute of Engineering Mechanics China Earthquake Administration,2007.[吴兆营.倾斜入射条件下土石坝最不利地震动输入研究[D].哈尔滨:中国地震局工程力学研究所,2007.]
[9]Du Xiuli,Zhao Mi,Wang Jinting.A stress artificial boundary in FEA for near field[J].Chinese Journal of Applied Mechanics,2006,38(1):49-56.[杜修力,赵密,王进廷.近场波动模拟的一种应力人工边界[J].力学学报,2006,38(1):49-56.]
[10]Liu Jingbo,Gu Yin,Du Yixin.Consistent viscous-spring artificial boundary and viscous-spring boundary element[J].Chinese Journal of Geotechnical Engineering,2006,28(9):1070-1075.[刘晶波,谷音,杜义欣.一致粘弹性人工边界及粘弹性边界单元[J].岩土工程学报,2006,28(9):1070-1075.]
[11]黎在良,刘殿魁.固体中的波[M].北京:科学出版社,1995:202-214.
[12]Lysmer J,Kuhlemeyer R L.Finite dynamic model for infinite media[J].J Engng Mech Div ASCE,1969,95:759-877.
[13]Clayton R,Engquist B.Absorbing boundary conditions for wave equation migration[J].Geophysics,1980,45:895-904.
[14]Liao Zhenpeng.Extrapolation nonreflection boundary condition in normal direction[J].Science in China:Ser E,1996,26(2):185-192.[廖振鹏.法向透射边界[J].中国科学:E辑,1996,26(2):185-192.
[2]Du Xiuli,Chen Wei,Li Liang,et al.Preliminary study of time-domain seismic response for underground structures to obliquely incident seismic waves[J].Technology for Earthquake Disaster Prevention,2007,2(3):290-296.[杜修力,陈维,李亮,等.斜入射条件下地下结构时域地震反应分析初探[J].震灾防御技术,2007,2(3):290-296.]
[3]Wang Qin,Chen Juan,Li Jie.Seismic response analysis of underground pipeline under obliquely incident seismic waves[J].J of HUST:Urban Science Edition,2008,25(4):283-286.[王琴,陈隽,李杰.斜入射地震波作用下地下管线的地震反应分析[J].华中科技大学学报:城市科学版,2008,25(4):283-286.]
[4]Huang Qiangbing,Peng Jianbing.Calculation about earthquake stress for underground pipeline based on the incident angle of earthquake wave[J].Chinese Journal of Underground Space and Engineering,2008,4(5):979-984.[黄强兵,彭建兵.基于地震波入射角的地下管道地震应力计算[J].地下空间与工程学报,2008,4(5):979-984.]
[5]Ma Xingdong,Li Haibo.Primary analysis of different incidence propagation on dynamic response of underground rock cavern under earthquake[J].Water Power,2007,33(1):23-25.[马行东,李海波.地震波入射方向对地下岩体洞室动态响应的初步分析[J].水力发电,2007,33(1):23-25.]
[6]Li Xiaojun,Lu Tao.Explicit finite element analysis of earthquake response for underground caverns of hydropower stations[J].Journal of Hydroelectric Engineering,2009,28(5):41-46.[李小军,卢滔.水电站地下厂房洞室群地震反应显式有限元分析[J].水力发电学报,2009,28(5):41-46.]
[7]Wegner J L,Yao M M,Zhang X.Dynamic wave-soil-structure interaction analysis in the time domain[J].Computers and Structures,2005,83:2206-2214.
[8]Wu Zhaoying.Study of the worst seismic motion input for earth-dam seismic stability under the oblique incidence condition[D].Harbin:Institute of Engineering Mechanics China Earthquake Administration,2007.[吴兆营.倾斜入射条件下土石坝最不利地震动输入研究[D].哈尔滨:中国地震局工程力学研究所,2007.]
[9]Du Xiuli,Zhao Mi,Wang Jinting.A stress artificial boundary in FEA for near field[J].Chinese Journal of Applied Mechanics,2006,38(1):49-56.[杜修力,赵密,王进廷.近场波动模拟的一种应力人工边界[J].力学学报,2006,38(1):49-56.]
[10]Liu Jingbo,Gu Yin,Du Yixin.Consistent viscous-spring artificial boundary and viscous-spring boundary element[J].Chinese Journal of Geotechnical Engineering,2006,28(9):1070-1075.[刘晶波,谷音,杜义欣.一致粘弹性人工边界及粘弹性边界单元[J].岩土工程学报,2006,28(9):1070-1075.]
[11]黎在良,刘殿魁.固体中的波[M].北京:科学出版社,1995:202-214.
[12]Lysmer J,Kuhlemeyer R L.Finite dynamic model for infinite media[J].J Engng Mech Div ASCE,1969,95:759-877.
[13]Clayton R,Engquist B.Absorbing boundary conditions for wave equation migration[J].Geophysics,1980,45:895-904.
[14]Liao Zhenpeng.Extrapolation nonreflection boundary condition in normal direction[J].Science in China:Ser E,1996,26(2):185-192.[廖振鹏.法向透射边界[J].中国科学:E辑,1996,26(2):185-192.
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