| 中国古建筑动力特性及地震反应 |
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| 引用本文： | 周乾,闫维明,周锡元,纪金豹.中国古建筑动力特性及地震反应[J].北京工业大学学报,2010,36(1):13-17. |
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| 作者姓名： | 周乾 闫维明 周锡元 纪金豹 |
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| 作者单位： | 北京工业大学工程抗震与结构诊治北京市重点实验室,北京,100124;故宫博物院,北京,100009;北京工业大学工程抗震与结构诊治北京市重点实验室,北京,100124 |
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| 基金项目： | 故宫博物院科研基金资助项目(KT2007-4) |
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| 摘 要： | 以故宫英华殿为例,引入了反应中国古代木结构榫卯连接的半刚性单元,并将斗简化为三向减震弹簧,建立了有限元模型.通过动力分析,得到了英华殿的前10阶自振周期及振型;通过输入三向天津波进行地震时程响应分析,得到了英华殿跨中部位屋顶节点、柱顶节点及柱根单元的地震响应曲线,并对比分析了榫卯连接、斗及侧脚等构造对地震反应的影响.研究表明:英华殿的基频较低,在x向振动以第一振型为主,在y向振动以第二振型为主,在地震作用下屋顶的加速度响应要小于柱顶,榫卯连接、斗及侧脚等构造措施均有利于减小结构的地震响应.
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| 关 键 词： | 木结构 振动特性 动力响应 抗震性能 中国古建筑 |
Vibration Characters and Seismic Response of Chinese Ancient Buildings |
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| ZHOU Qian,YAN Wei-ming,ZHOU Xi-yuan,JI Jin-bao.Vibration Characters and Seismic Response of Chinese Ancient Buildings[J].Journal of Beijing Polytechnic University,2010,36(1):13-17. |
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| Authors: | ZHOU Qian YAN Wei-ming ZHOU Xi-yuan JI Jin-bao |
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| Affiliation: | 1.Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit;Beijing University of Technology;Beijing 100124;China;2.Imperial Palace Museum;Beijing 100009;China |
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| Abstract: | Ying-hua Palace in the Forbidden City is taken as an example.FEM of Chinese ancient wood structure is built on the basement of hypothesizes that tenon-mortise joints are considered as semi-rigid elements and tou-kungs are considered as 3-dimensional springs.By modal analysis the first 10 periods as well as vibration modes are obtained.Then Tianjin seismic waves in 3 dimensions are input and response curves of typical nodes as well as elements are studied.Aseismic characters of constitutions such as tenon-mo... |
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| Keywords: | wooden construction vibrations dynamic response earthquake resistance Chinese ancient buildings |
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