塔式起重机的地震谱分析
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摘要
针对地震冲击造成塔式起重机遭受严重损害,酿成重大安全事故的问题,采用振型分解反应谱法和谱分析技术进行塔机地震作用动态响应研究。建立了塔机地震作用下的动力学方程和谱分析有限元模型,在编制了地震反应谱之后,基于ANSYS平台实现了8级烈度强震下的塔机地震谱分析。研究结果表明,塔臂受地震作用在水平、竖直方向产生的振动和弯曲是其断裂受损的根本原因。
Aiming at the problem that seismic shock causes damage to tower cranes seriously and engenders major safety accidents;mode-superposition response spectrum method and spectrum analysis technique are applied to study on tower crane dynamic response subjected to seismic action.The dynamics formulation of tower crane subjected to seismic action and spectrum analysis finite element model are built at first.After compiled the earthquake spectrum,the spectrum analysis for tower crane subjected to Eighth Intensity strong earthquake is carried out under ANSYS.The study reveals that the basic reason of tower arm fracture is its vibration and bends in horizontal and vertical direction produced by seismic action.
Aiming at the problem that seismic shock causes damage to tower cranes seriously and engenders major safety accidents;mode-superposition response spectrum method and spectrum analysis technique are applied to study on tower crane dynamic response subjected to seismic action.The dynamics formulation of tower crane subjected to seismic action and spectrum analysis finite element model are built at first.After compiled the earthquake spectrum,the spectrum analysis for tower crane subjected to Eighth Intensity strong earthquake is carried out under ANSYS.The study reveals that the basic reason of tower arm fracture is its vibration and bends in horizontal and vertical direction produced by seismic action.
引文
[1]尹强,陈世教,冀满忠.基于ANSYS的塔式起重机结构模态分析[J].重庆建筑大学学报,2003,20(6):97-100.
[2]张银龙.塔式起重机的振动模态分析[J].起重运输机械,2007(3):54-56.
[3]郑夕健,谢正义,张国忠.基于ANSYS的塔式起重机结构稳定性分析[J].建筑机械,2007(11):76-78.
[4]肖晓晖,吴功平,李立斌.塔式起重机疲劳载荷谱的编制[J].应用力学学报,2003,20(4):86-88.
[5]王进.基于有限元法的塔式起重机钢结构疲劳寿命研究[D].重庆大学,2005.
[6]Ju Feng,Choo Yoo sang,Cui Fang sen,et al.Dynamic responseof towercrane induced by the pendulum motion of thepayload[J].International Journal of Solids and Structures,2006,43:376–389.
[7]GB/T 13752-92.塔式起重机设计规范[S].中国国家技术监督局,1992.
[8]GB/T 9462—1999.塔式起重机技术条件[S].中国国家技术监督局,1999.
[9]ISO/TR 27245:2007.Cranes-Tower cranes-International Standards for design,manufacture,use and maintenance req-uiriments and recommendations[S].International Orgarnzat-ion for Standardization,2007.
[10]李围,叶裕明,刘春山,等.ANSYS土木工程应用实例:第2版[M].北京:中国水利水电出版社,2007(1):160-171.
[11]沈国辉,孙炳楠,何运祥,等.大跨越输电塔线体系的地震响应研究[J].工程力学,2008,25(11):212-217.
[12]邢静忠,王永岗,陈晓霞,等.ANSYS 7.0分析实例与工程应用[M].北京:机械工业出版社,2004.
[2]张银龙.塔式起重机的振动模态分析[J].起重运输机械,2007(3):54-56.
[3]郑夕健,谢正义,张国忠.基于ANSYS的塔式起重机结构稳定性分析[J].建筑机械,2007(11):76-78.
[4]肖晓晖,吴功平,李立斌.塔式起重机疲劳载荷谱的编制[J].应用力学学报,2003,20(4):86-88.
[5]王进.基于有限元法的塔式起重机钢结构疲劳寿命研究[D].重庆大学,2005.
[6]Ju Feng,Choo Yoo sang,Cui Fang sen,et al.Dynamic responseof towercrane induced by the pendulum motion of thepayload[J].International Journal of Solids and Structures,2006,43:376–389.
[7]GB/T 13752-92.塔式起重机设计规范[S].中国国家技术监督局,1992.
[8]GB/T 9462—1999.塔式起重机技术条件[S].中国国家技术监督局,1999.
[9]ISO/TR 27245:2007.Cranes-Tower cranes-International Standards for design,manufacture,use and maintenance req-uiriments and recommendations[S].International Orgarnzat-ion for Standardization,2007.
[10]李围,叶裕明,刘春山,等.ANSYS土木工程应用实例:第2版[M].北京:中国水利水电出版社,2007(1):160-171.
[11]沈国辉,孙炳楠,何运祥,等.大跨越输电塔线体系的地震响应研究[J].工程力学,2008,25(11):212-217.
[12]邢静忠,王永岗,陈晓霞,等.ANSYS 7.0分析实例与工程应用[M].北京:机械工业出版社,2004.
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