大跨度斜拉桥有限元计算模型的建立及其动力特性分析
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摘要
本文结合工程实例润扬长江公路大桥北汊斜拉桥,探讨了斜拉桥有限元计算力学模型的建立方法,主要是各组成部分的简化、各单元计算参数的取值以及边界与连接条件的模拟。同时,利用有限元程序研究了其动力特性,主要包括自由振动频率、相应的振型特性。研究结果不仅为大跨度斜拉桥的分析提供了必要的理论基础,而且对大跨度斜拉桥的设计具有较好的参考价值。
Associated with Runyang Yangtze River Highway long-span cable stayed bridges,the mechanical model for finite element calculation method was discussed.The contents include the components simplified,parameter choice and boundary,simulation of the boundary and connecting condition.Finite element program called ANSYS was employed to model the dynamic characteristics and seismic responses analysis of the cable stayed bridges.The free vibration frequency,the vibration characteristics of long-span cable stayed bridges were discussed.The results not only provides the necessary theoretical foundation for relatiue analysis,but also has a good reference value for the design of long-span cable-stayed bridges.
Associated with Runyang Yangtze River Highway long-span cable stayed bridges,the mechanical model for finite element calculation method was discussed.The contents include the components simplified,parameter choice and boundary,simulation of the boundary and connecting condition.Finite element program called ANSYS was employed to model the dynamic characteristics and seismic responses analysis of the cable stayed bridges.The free vibration frequency,the vibration characteristics of long-span cable stayed bridges were discussed.The results not only provides the necessary theoretical foundation for relatiue analysis,but also has a good reference value for the design of long-span cable-stayed bridges.
引文
[1]吴寿昌,王定新,彭德运.润扬长江公路大桥总体设计[S].铁道标准设计,2003 WU Shouchang,Wang Dingxin.PENG Deyun.Over design of zhenjiang-yangzhou yangtze river highway bridge.Railway Standard Design,2003
[2]郝文化.ANSYS土木工程应用实例[M].北京:中国水利水电出版社,2005 HAO Wenhua ANSYS civil engineering application examples. Beijing:China Water Conservancy and Hydropower Press,2005
[3]龚曙光,谢桂兰.ANSYS操作命令与参数化编程[M].北京:机械工业出版社,2004 GONG Shuguang.XIE Guilan.The ANSYS command and parametric programming.BeijingtMachinery industry Press,2004
[4]Caetano E,Cunha A,Taylor CA.Investigation of dynamic cabledeck in teraction in a physical model of a cable—stayed bridge. Part I:modal analys is[J].Earthquake Engineering and Structural Dynamics,2000,29:481-498.
[5]范立础,胡士德,叶爱军等.大跨度桥梁抗震设计[M].人民交通出版社,2001:121-130 FAN Lichu,HU Shide,YE Aijun.Seismic design for long span bridges[M].Beijing:China Communications Press,2001:121-130
[6]杨喜文,张文华,李建中.大跨度斜拉桥横桥向减震研究[J].地震工程与工程振动,2012,32(1):86-92 YANG Xiwen,ZHANG Wenhua.Li Jianzhong.Seismic design for long-span cable-stayed bridges in transverse direction, EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION,2012,32(1):86-92
[7]徐春燕.大跨度斜拉桥动力特性及其地震反应分析研究[D]: [硕士学位论文].南京:东南大学,2004 XU Chunyan.Long span cable-stayed bridge dynamic characteristics and seismic response analysis,Nanjing:Southeast University,2004
[2]郝文化.ANSYS土木工程应用实例[M].北京:中国水利水电出版社,2005 HAO Wenhua ANSYS civil engineering application examples. Beijing:China Water Conservancy and Hydropower Press,2005
[3]龚曙光,谢桂兰.ANSYS操作命令与参数化编程[M].北京:机械工业出版社,2004 GONG Shuguang.XIE Guilan.The ANSYS command and parametric programming.BeijingtMachinery industry Press,2004
[4]Caetano E,Cunha A,Taylor CA.Investigation of dynamic cabledeck in teraction in a physical model of a cable—stayed bridge. Part I:modal analys is[J].Earthquake Engineering and Structural Dynamics,2000,29:481-498.
[5]范立础,胡士德,叶爱军等.大跨度桥梁抗震设计[M].人民交通出版社,2001:121-130 FAN Lichu,HU Shide,YE Aijun.Seismic design for long span bridges[M].Beijing:China Communications Press,2001:121-130
[6]杨喜文,张文华,李建中.大跨度斜拉桥横桥向减震研究[J].地震工程与工程振动,2012,32(1):86-92 YANG Xiwen,ZHANG Wenhua.Li Jianzhong.Seismic design for long-span cable-stayed bridges in transverse direction, EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION,2012,32(1):86-92
[7]徐春燕.大跨度斜拉桥动力特性及其地震反应分析研究[D]: [硕士学位论文].南京:东南大学,2004 XU Chunyan.Long span cable-stayed bridge dynamic characteristics and seismic response analysis,Nanjing:Southeast University,2004
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