湖南省某穿斗木结构设计及抗震性能分析

Design and Seismic Performance Analysis of a Wooden Structure with a Bucket in Hunan Province

为研究穿斗式木结构的结构特性及抗震性能,以位于湖南省抗震设防烈度6度区的穿斗式木结构图书馆为原型,在考虑节点半刚性特性的基础上,通过ETABS软件进行建模,对结构进行内力、变形计算和截面验算,并通过时程计算得到结构在多遇地震作用下的柱底剪力、层间位移角等地震响应。结果表明:榫卯节点在受力过程中经历了弹性阶段和塑性变形阶段;穿斗木结构在小震作用下整体变形特性良好,中震作用下结构的侧向变形较大;在地震作用下,柱脚易出现拉力,失效模式表现为柱脚滑移导致局部破坏,在工程中可采用锚杆或插板螺栓连接的方式对柱脚进行锚固。

As the research ChuanDouShi wooden structure characteristics and seismic performance, with the seismic fortification intensity of 7 area in central China’ s hunan province ChuanDouShi timberwork library as the proto-type, on the basis of the property of semi-rigid nodes, through ETABS program software modeling, the structure in-ternal force and deformation calculation and cross section analysis, and through the calendar to calculate structure under severe earthquake more column bottom shear, the earthquake response of the interlayer displacement Angle and so on. The results show that the mortise and tenon joint undergoes both elastic and plastic deformation stages.Under the action of earthquake, the column foot is prone to tension, and the failure mode is that the column foot slip-page leads to local damage. Anchor bolt or bolt bolt connection can be used in engineering to anchor the column foot.