摘要
为更好地保护古建筑,以紫禁城古建筑木柱为对象,采用理论分析方法,研究了其抗震稳定构造。从柱底、柱身、柱顶、柱架等四个方面探讨了柱子对结构抗震性能的有利影响。结果表明:柱底平摆浮搁在柱顶石上,有利于摩擦滑移隔震;柱身侧脚、收分与生起,有利于降低结构重心,提高稳定性;柱顶与梁端做成榫卯节点形式,榫头与卯口的相对运动可耗散部分地震能量;柱架高度不超过建筑的宽度,有利于减小或避免结构整体在地震作用下产生失稳。
To effectively protect Chinese ancient buildings,the column constitution in the Forbidden City is taken as example for study.By theoretical means,aseismic stability constitutions such as bottom,body,top,frame and so on of the column are discussed.The results show that the column bottom free stands on stone base,which helps isolation by slide.The cejiao(intilted side column),shoufen(decreasing section size from bottom to top of column)and shengqi(hollow column frame)help decrease center of gravity of the structure.Top of column is connected with beam end by tenon-mortise joint,which can consume part of earthquake energy by relative motion between tenon and mortise.Height of column is no more than that of structure width,which can decrease or avoid the instability of the structure.
作者
周乾
闫维明
杨娜
Zhou Qian;Yan Wei-ming;Yang Na(School of Cultural of History and Tourism,Datong University,Datong 037009,China;Palace Museum,Beijing 100009,China;Beijing Key Laboratory of Earthquake Engineering and StructuralRetrofit,Beijing University of Technology,Beijing 100124,China;School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China)
出处
《工程抗震与加固改造》
北大核心
2020年第3期149-156,共8页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金面上项目(51878182)。
关键词
古建筑
木柱
抗震稳定
紫禁城
ancient building
timber column
aseismic stability
the Forbidden City
