曲线箱梁桥的动力特性参数分析
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摘要
结合某城市一座立交工程匝道高架曲线箱梁桥的工程实例,采用大型有限元分析程序AN-SYS,选取空间梁单元建立动力计算模型,研究了在跨度相同的条件下,曲率半径与角度比值对曲线梁桥动力特性和地震反应的影响。分析结果表明:曲率半径与角度比值是影响动力特性的一个重要参数,且对曲线梁桥的切向刚度、径向刚度和地震反应有较大的影响。
Taking an engineering design case of a curved box-girders bridge,a three-dimensional finite element calculating model for the curved box-girders bridge is set up by means of finite element analysis program ANSYS and the influence of the curved box-girders bridge with the ratio of curvature radius to angle under same span on dynamic characteristics and seismic responrse is researched.The analyzed results show that the ratio of curvature radius to angle are an importance parameter,which affects the dynamic characteristic,and has significant influence on tangential stiffness,radial stiffness and seismic response of the curved box-girders bridge.
Taking an engineering design case of a curved box-girders bridge,a three-dimensional finite element calculating model for the curved box-girders bridge is set up by means of finite element analysis program ANSYS and the influence of the curved box-girders bridge with the ratio of curvature radius to angle under same span on dynamic characteristics and seismic responrse is researched.The analyzed results show that the ratio of curvature radius to angle are an importance parameter,which affects the dynamic characteristic,and has significant influence on tangential stiffness,radial stiffness and seismic response of the curved box-girders bridge.
引文
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[2]周绪红,戴鹏,狄谨.曲线PC箱梁桥隔震体系的非线性分析[J].中国公路学报,2008,21(1):65-71.Zhou Xuhong,Dai Peng,Di Jin.Nonlinear analysis of curved prestressed concrete box girder bridge with seismic isolation system[J].China Journal of Highway and Transport,2008,21(1):65-71.
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[5]徐勋,卫星,刘德军,等.扁平曲线箱梁静动力特性分析[J].公路交通科技,2007,24(12):60-65.Xu Xun,Wei Xing,Liu Dejun,et a1.Analysis for static and dynamic characteristics of flat curved box beam[J].Joumal of Highway and Transporta-tion Research and Developmen,2007,24(12):60-65.
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[7]韦成龙,曾庆元.薄壁曲线箱梁考虑翘曲、畸变和剪滞效应的空间分析[J].土木工程学报,2000,33(6);81-87.Wei Chenglong,Zeng Qingyuan.A new element for thin-walled curved box girder analysis including warping distortion and shear-lag effects[J].Journal of Civil Engineering,2000,33(6);81-87.
[8]王银辉,陈山林.考虑初曲率影响的变曲率箱梁空间有限元分析[J].中国公路学报,2007,20(6):74-78.Wang Yinhui,Chen Shanlin.Spatial finite element analysis for variable-curvature box girder with initial curature[J].China Journal of Highway and Transport,2007,20(6):74-78.
[9]张元海,李乔.斜支承曲线梁桥内力影响因素分析[J].铁道学报,2005,27(5):77-82.Zhang Yuanhai,Li Qiao.Influential factor analysis for internal forces of skewcurved beam bridges[J].Journal of the China Railway Society,2005,27(5):77-82.
[10]宋国华,罗玲,王东炜.偏心支承对120°圆心角双跨弯箱梁桥的影响[J].桥梁建设,2005,(4):44-47.Song Guohua,Luo ling,Wang Dongwei.Influences of eccentric supports on two-span curved box girder bridges with120°central angles[J].Bridge Construction,2005,(4):44-47.
[11]邱波,王荣辉,刘光栋.考虑隅角点承托刚性影响薄壁箱梁的空间计算分析[J].中国公路学报,2003,16(1):50-53.Qiu Bo,Wang Ronghui,Liu Guangdong.Spatial computational analysis of considering rigidity of box corner reinforcement part for thin-walled box girder[J].China Journal of Highway and Transport,2003,16(1):50-53.
[12]孙颖,卓卫东.曲线箱梁桥动力计算模型与动力特性参数分析[J].福建建筑,2007,114(12):101-103.Sun Yin,Zhuo Weidong.FEM-Model and parameter-analysis on dynamic characteristics for curved box beam bridges[J].Fujian Architecture&Construction,2007,114(12):101-103.
[2]周绪红,戴鹏,狄谨.曲线PC箱梁桥隔震体系的非线性分析[J].中国公路学报,2008,21(1):65-71.Zhou Xuhong,Dai Peng,Di Jin.Nonlinear analysis of curved prestressed concrete box girder bridge with seismic isolation system[J].China Journal of Highway and Transport,2008,21(1):65-71.
[3]柳春光,焦双健.城市立交桥结构三维地震反应[J].地震工程与工程振动,2001,21(2):41-47.Liu Chunguang,Jiao Shuangjian.Three-dimensional seismic response analysis of urban overpass structures[J].Journal of Earthquake Engineering and Engineering Vibration,2001,21(2):41-47.
[4]程晓东,戴利平,周松国,等.连续曲线箱梁桥的空间有限元分析及试验研究[J].公路交通科技,2003,20(3):73-76.Cheng Xiaodong,Dai Liping,Zhou Songguo,et a1.Spatial FEM analysis and experiments of continuous curved box girder bridge[J].Journal of Highway and Transportation Research and Developmen,2003,20(3):73-76.
[5]徐勋,卫星,刘德军,等.扁平曲线箱梁静动力特性分析[J].公路交通科技,2007,24(12):60-65.Xu Xun,Wei Xing,Liu Dejun,et a1.Analysis for static and dynamic characteristics of flat curved box beam[J].Joumal of Highway and Transporta-tion Research and Developmen,2007,24(12):60-65.
[6]周勇军,赵小星,贺栓海,等.弯钢箱梁桥的动力分析及模态试验[J].郑州大学学报:工学版,2005,26(4):20-24.Zhou Yongjun,Zhao Xiaoxing,He Shuanhai,et a1.Dynamic analysis and modal test of a cured steel box girder[J].Journal of ZhengZhou University(Engineening Science),2005,26(4):20-24.
[7]韦成龙,曾庆元.薄壁曲线箱梁考虑翘曲、畸变和剪滞效应的空间分析[J].土木工程学报,2000,33(6);81-87.Wei Chenglong,Zeng Qingyuan.A new element for thin-walled curved box girder analysis including warping distortion and shear-lag effects[J].Journal of Civil Engineering,2000,33(6);81-87.
[8]王银辉,陈山林.考虑初曲率影响的变曲率箱梁空间有限元分析[J].中国公路学报,2007,20(6):74-78.Wang Yinhui,Chen Shanlin.Spatial finite element analysis for variable-curvature box girder with initial curature[J].China Journal of Highway and Transport,2007,20(6):74-78.
[9]张元海,李乔.斜支承曲线梁桥内力影响因素分析[J].铁道学报,2005,27(5):77-82.Zhang Yuanhai,Li Qiao.Influential factor analysis for internal forces of skewcurved beam bridges[J].Journal of the China Railway Society,2005,27(5):77-82.
[10]宋国华,罗玲,王东炜.偏心支承对120°圆心角双跨弯箱梁桥的影响[J].桥梁建设,2005,(4):44-47.Song Guohua,Luo ling,Wang Dongwei.Influences of eccentric supports on two-span curved box girder bridges with120°central angles[J].Bridge Construction,2005,(4):44-47.
[11]邱波,王荣辉,刘光栋.考虑隅角点承托刚性影响薄壁箱梁的空间计算分析[J].中国公路学报,2003,16(1):50-53.Qiu Bo,Wang Ronghui,Liu Guangdong.Spatial computational analysis of considering rigidity of box corner reinforcement part for thin-walled box girder[J].China Journal of Highway and Transport,2003,16(1):50-53.
[12]孙颖,卓卫东.曲线箱梁桥动力计算模型与动力特性参数分析[J].福建建筑,2007,114(12):101-103.Sun Yin,Zhuo Weidong.FEM-Model and parameter-analysis on dynamic characteristics for curved box beam bridges[J].Fujian Architecture&Construction,2007,114(12):101-103.
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