摘要
古建筑木结构柱架的抗侧能力对整体结构的抗震性能有着重要的影响。通过对柱架受力机理进行分析,得出在水平反复荷载作用下柱架的受力变形以侧移为主,类似于"摇摆柱";柱摇摆产生的埋置嵌入作用是柱架产生抵抗弯矩的根本原因;基于"摇摆柱"原理,并结合试验提出水平反复荷载作用下古建筑木结构柱架抗侧弯矩的理论计算公式,其计算结果与试验结果吻合良好;将试验与理论计算得出的M-θ骨架曲线进行拟合,分别得出了三组柱架的抗侧刚度公式。
The lateral load-resisting capacity of ancient timber column-frame plays an important role in seismic behavior of the whole structure. Through the analysis of the bearing mechanism to the column-frame, it was found that the displacement of the column-frame under laternal cyclic loading was mainly lateral displacement, just as ＂ swing- columns＂, and the embedment due to swing was the basic reason of producing resisting moment. Based on the principle of ＂ swing-columns＂ and the experiment, it was established the theoretical calculating formula for the resistant-lateral moment of ancient timber column-frame under the horizontal cyclic loading; the calculated results were in good agreement with experimental results. Through fitting the M-O skeleton curves based on the experiment and theoretical calculations, it was respectively got the lateral stiffness formula of three zrouns＇ column-frame.
出处
《工业建筑》
CSCD
北大核心
2013年第10期55-60,共6页
Industrial Construction
基金
国家科技支撑计划资助课题(2013BAK01B03-2)
国家自然科学基金项目(51278399)
国家文物局文物保护科学和技术研究课题(20110123)
关键词
柱架
摇摆柱
抗侧分析
埋置嵌入
试验验证
抵抗弯矩
column-frame
swing-columns
lateral load-resisting analysis
embedment
experimental verification
resisting moment
