穿斗式木构架抗震特性简化分析

huan-Dou-style wood frame structural form is a typical Chinese traditional house style, which has still been found in application in the rural areas in the Southwest China. On May 12, 2008, an earthquake of Richter magnitude 8 occurred in Wenchuan, Sichuan Province, China. During the earthquake, many houses were found seriously damaged, but the Chuan-Dou style (or Column and Tie Joint) Wood Frame Houses were found having good seismic performance. In this paper, the structural components, the construction technology and the structural capacity of the Chuan-Dou style wood frame houses are summarized and analysed. A seismic FE model is established, and the time dynamic response analysis of the structures under seismic input is executed. The seismic performance of such Wood Frame Houses is investigated. Analysis showed that the overall trend of the maximum displacement of the seismic response of Chuan-Dou-style wood frame decreases with increasing joint stiffness, and with the increase of the peak of the acceleration of input seismic wave, the change of the joint stiffness influence more of the peak displacement of the top of the the central column.