核筒悬挂结构在耦合地震下的抗震分析
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摘要
研究抗震性能问题,对新型建筑核筒悬挂结构进行模态分析,并从水平和竖直方向同时输入地震波,研究了其在多维耦合地震激励下的响应。传统抗震计算采用的是层模型,计算精度则不够理想。采用更精确的串并联多质点系模型对结构进行简化,选取实际地震记录的水平和竖向地震波分量作为外部激励,推导其振动微分方程,应用直接积分法对方程进行求解,得到结构不同部位各节点在耦合地震激励下的响应变化规律。将结果与仅水平或竖向单维地震激励下的结构响应作比较,结构部分构件响应有明显差异。仿真计算表明,核筒悬挂结构在耦合地震作用下的抗震性能精度,对悬挂结构进一步的抗震研究和设计具有参考价值。
This paper analysed the mode of core-tube suspended structure and studied its response under multi-dimension seismic coupling excitation.The floor-model which is always used by the traditional seismic analysis has a good adaptability of calculating the horizontal vibration,but it is not very accurate when it comes to vertical vibration.This research used the series-parallel-connection model to simplify structure and chose actual earthquake record to establish the equation.Solved the equation by using direct-integration method,we can get the each node response.By comparison with single-dimension seismic excitation,the response of some components have a significant difference.The conclusion helps the mastery of core-tube suspended structure vibration characteristic and can be refered for the further research and design.
This paper analysed the mode of core-tube suspended structure and studied its response under multi-dimension seismic coupling excitation.The floor-model which is always used by the traditional seismic analysis has a good adaptability of calculating the horizontal vibration,but it is not very accurate when it comes to vertical vibration.This research used the series-parallel-connection model to simplify structure and chose actual earthquake record to establish the equation.Solved the equation by using direct-integration method,we can get the each node response.By comparison with single-dimension seismic excitation,the response of some components have a significant difference.The conclusion helps the mastery of core-tube suspended structure vibration characteristic and can be refered for the further research and design.
引文
[1]周坚,伍效波,刘娜.高层建筑悬挂结构体系动力分析[J].北京建筑工程学院学报,2003,4:1-8.
[2]王春林,吕志涛.高层核筒悬挂结构地震响应的参数分析[J].工程抗震与加固改造,2008,30(1).
[3]刘洪兵,贾燕翔,张春燕.竖向地震作用下框架结构竖向刚度矩阵的计算[J].西北水力发电,2003,19(1):5-7.
[4]Daryl L Logan,伍义生.有限元方法基础教程[M].北京:电子工业出版社,2003.
[5]邱吉宝,向树红,张正平.计算结构动力学[M].合肥:中国科学技术大学出版社,2009.
[6]刘晶波,杜修力.结构动力学[M].北京:机械工业出版社,2005.
[7]R W克拉夫J彭津.结构动力学[M].北京:科学出版社,1981.
[8]张新培.钢筋混凝土抗震结构非线性分析[M].北京:科学出版社,2003.
[2]王春林,吕志涛.高层核筒悬挂结构地震响应的参数分析[J].工程抗震与加固改造,2008,30(1).
[3]刘洪兵,贾燕翔,张春燕.竖向地震作用下框架结构竖向刚度矩阵的计算[J].西北水力发电,2003,19(1):5-7.
[4]Daryl L Logan,伍义生.有限元方法基础教程[M].北京:电子工业出版社,2003.
[5]邱吉宝,向树红,张正平.计算结构动力学[M].合肥:中国科学技术大学出版社,2009.
[6]刘晶波,杜修力.结构动力学[M].北京:机械工业出版社,2005.
[7]R W克拉夫J彭津.结构动力学[M].北京:科学出版社,1981.
[8]张新培.钢筋混凝土抗震结构非线性分析[M].北京:科学出版社,2003.
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