地震动摇摆分量对非对称结构的影响
|
摘要
利用MATLAB软件,从汶川地震一地震记录的平动分量计算得到摇摆分量,并采用ABAQUS有限元分析软件,分析两偏心结构的三维模型分别在地震动水平分量和水平加摇摆分量作用下的弹性位移响应。结果表明,地震动摇摆分量对双向偏心结构的影响比单向偏心结构大,在结构的较低层,摇摆分量对结构的位移有减弱作用,而在结构的较高楼层处,摇摆分量对结构位移响应的不利影响显著增加,在这类结构的抗震设计中应对摇摆分量的影响予以足够重视。
The paper calculated the rocking component of the Wenchuan earthquake wave by using the MATLAB.Elastic displacement responses of two asymmetric structures subjected to translational component or both translational and rocking component were studied.The results show that the effect of rocking component to the two-way eccentric structure is greater than that of the one-way eccentric structure.For both structures,the displacement response is reduced on the lower floors when considering the rocking component,but the impact of rocking component increases significantly on the upper floors,which should be paid more attention to in seismic design.
The paper calculated the rocking component of the Wenchuan earthquake wave by using the MATLAB.Elastic displacement responses of two asymmetric structures subjected to translational component or both translational and rocking component were studied.The results show that the effect of rocking component to the two-way eccentric structure is greater than that of the one-way eccentric structure.For both structures,the displacement response is reduced on the lower floors when considering the rocking component,but the impact of rocking component increases significantly on the upper floors,which should be paid more attention to in seismic design.
引文
[1]张晖,蒋俊杰,周德源.结构扭转效应影响因素探讨[J].结构工程师,2011,27(6):22-25.Zhang Hui,Jiang Junjie,Zhou Deyuan.Discussion on factors to influence structural torsional responses analysis[J].Structural Engineering,2011,27(6):22-25.(in Chinese)
[2]何晓宇,李宏男.偏心形式对偏心结构扭转耦联地震响应的影响[J].世界地震工程,2008,24(3):36-44.He Xiaoyu,Li Hongnan.Seismic response analysis of an asymmetric structure considering different eccentricity forms[J].World Earthquake Engineering,2008,24(3):36-44.(in Chinese)
[3]Awad A M,Humar J L.Dynamic response of buildings to ground rotational motion[J].Canadian Journal of Civil Engineering,1984,11(1):48-56.
[4]中华人民共和国建设部.GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.Ministry of Construction of the People’s Republic of China.GB 50011—2010 Code for seismic design of buildings[S].Beijing:China Architecture and Building Press,2010.(in Chinese)
[5]Shakib H,Tohidi R Z.Evaluation of accidental eccentricity in buildings due to rotational component of earthquake[J].Journal of Earthquake Engineering,2002,6(4):431-445.
[6]Bugeja M N,Thambiratnam D P,Brameld G H.The influence of stiffness and strength eccentricities on the inelastic earthquake response of asymmetric structures[J].Engineering Structures,1999,21(9):856863.
[7]王敦,吕西林.平面不规则结构非弹性扭转地震反应研究进展[J].地震工程与工程振动,2010,30(2):51-58.Wang Dun,Lu Xili.Progress in study on inelastic torsional seimic response of asymmetric buildings[J].Journal of Earthquake Engineering and Engineering Vibration,2010,30(2):51-58.(in Chinese)
[8]孙世军,陈国兴.地面运动转动分量的合成方法[J].地震学刊,1998,(1):19-24.Sun Shijun,Chen Guoxing.Synthesis method for estimation of rotation components of ground Motion[J].Dynamic and Earthquake Engineering,1998,(1):19-24.(in Chinese)
[9]Trifunac M D.A note on rotational components of earthquake motions on ground surface for incident body waves[J].Soil Dynamic and Earthquake Engineering,1982,1(1):11-19.
[10]Lee W V,Trifunac M D.Torsional Accelerograms[J].Soil Dynamic and Earthquake Engineering,1985,4(3):132-139.
[11]洪钟.地震动转动分量研究[D].上海:同济大学,2010.Hong Zhong.Research of Rotation Component of Ground Motion[D].Shanghai:Tongji University,2010.(in Chinese)
[2]何晓宇,李宏男.偏心形式对偏心结构扭转耦联地震响应的影响[J].世界地震工程,2008,24(3):36-44.He Xiaoyu,Li Hongnan.Seismic response analysis of an asymmetric structure considering different eccentricity forms[J].World Earthquake Engineering,2008,24(3):36-44.(in Chinese)
[3]Awad A M,Humar J L.Dynamic response of buildings to ground rotational motion[J].Canadian Journal of Civil Engineering,1984,11(1):48-56.
[4]中华人民共和国建设部.GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.Ministry of Construction of the People’s Republic of China.GB 50011—2010 Code for seismic design of buildings[S].Beijing:China Architecture and Building Press,2010.(in Chinese)
[5]Shakib H,Tohidi R Z.Evaluation of accidental eccentricity in buildings due to rotational component of earthquake[J].Journal of Earthquake Engineering,2002,6(4):431-445.
[6]Bugeja M N,Thambiratnam D P,Brameld G H.The influence of stiffness and strength eccentricities on the inelastic earthquake response of asymmetric structures[J].Engineering Structures,1999,21(9):856863.
[7]王敦,吕西林.平面不规则结构非弹性扭转地震反应研究进展[J].地震工程与工程振动,2010,30(2):51-58.Wang Dun,Lu Xili.Progress in study on inelastic torsional seimic response of asymmetric buildings[J].Journal of Earthquake Engineering and Engineering Vibration,2010,30(2):51-58.(in Chinese)
[8]孙世军,陈国兴.地面运动转动分量的合成方法[J].地震学刊,1998,(1):19-24.Sun Shijun,Chen Guoxing.Synthesis method for estimation of rotation components of ground Motion[J].Dynamic and Earthquake Engineering,1998,(1):19-24.(in Chinese)
[9]Trifunac M D.A note on rotational components of earthquake motions on ground surface for incident body waves[J].Soil Dynamic and Earthquake Engineering,1982,1(1):11-19.
[10]Lee W V,Trifunac M D.Torsional Accelerograms[J].Soil Dynamic and Earthquake Engineering,1985,4(3):132-139.
[11]洪钟.地震动转动分量研究[D].上海:同济大学,2010.Hong Zhong.Research of Rotation Component of Ground Motion[D].Shanghai:Tongji University,2010.(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心