摘要
通过1∶2比例穿斗式木构架结构和轻型木结构模型的振动台试验,对这两种结构的抗震性能进行了研究。结果表明:穿斗式木构架在峰值加速度在0～0.5g的地震激励下,柱顶水平加速度反应会减小,动力放大系数在0.46～0.57之间,柱顶位移会增大,在输入峰值加速度大于0.4g后,柱与础石之间会产生较大的滑移,卯榫节点也会产生较大变形,从而耗散大量的地震能量,使得该结构具有明显的减震效果;轻型木结构模型则在峰值加速度大于0.4g地震激励下,柱顶加速度动力放大系数大于1,且轻型木结构模型在峰值加速度0.5g地震激励下,仍处于弹性状态。
By shaking table tests of two 1∶ 2 scaled prototype structures,the seismic performance of Chinese traditional wood building and light wood framed building were studied.The results show that under the horizontal earthquake action whose peak value is less than 0.5g,the horizontal acceleration responses at the top of columns of Chinese traditional wood building can be less than the acceleration input.The dynamic magnification factor of acceleration ranges from 0.46 to 0.57.The corresponding displacements can be larger than the displacement input.When the peak value of the input acceleration is bigger than 0.4g,the obvious slippage between the columns and base-stones,as well as the deflection of joints connecting beams and columns will appear.As the result,the energy of the earthquake can be dissipated and the excellent effect of shock absorption can be achieved.Furthermore,for the light wood framed building,when the peak value of the input acceleration is bigger than 0.4g,the dynamic magnification factor of acceleration can be bigger than 1.0.And if the peak value of input acceleration is not more than 0.5g,the light wood framed building can remain elastic.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2012年第6期138-143,共6页
Journal of Building Structures
基金
国家自然科学基金项目(50808078)
湖南省科技计划重点项目(06SK4057)
湖南大学青年教师成长计划
关键词
穿斗式木构架结构
轻型木结构
振动台试验
抗震性能
Chinese traditional wood structure
light wood framed structure
shaking table test
seismic performance
