CRACK DAMAGE DISTRIBUTION OF CONCRETE FILLED STEEL TUBE FRAME UNDER EXTREMELY STRONG GROUND MOTION

摘要：

Seismic response and crack damage of concrete filled steel tube frame (CFT-frame) under strong ground motion are numerically analyzed and the damage ratio and damage distribution in the frame are investigated. In order to prevent the damage concentration, the design condition of CFT-frame expressed by the strength ratio of concrete to steel tube is derived from the numerical results of seismic response and damage ratio distribution. CFT-frames are designed on the basis of the proposed design condition and the calculations of the seismic response and damage of them have been carried out. From the calculated results, it is ascertained that the proposed design condition of CFT-frame is useful to prevent the damage concentration in CFT-frame under strong ground motion.

关键词： concrete filled steel tube seismic response analysis accumulated plastic deformation steel tube crack damage ratio.

作者: Motoo SAISHO

作者单位: Dept. of Architecture, Graduate School of Science and Technology, Kumamoto Univ., Kumamoto, Japan

会议类型: 国际会议

会议名称: 14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-12（万方平台首次上网日期，不代表论文的发表时间）