Ultimate Earthquake Resistant Capacity of CFT-Frame Based on Dynamic Collapse Behavior

基于动态倒塌行为的钢管混凝土框架极限抗震能力

• 批准号: 14550573
• 负责人: SAISHO Motoo
• 金额: $ 2.24万
• 依托单位: Kumamoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14550573/
• 关键词: Earthquake resistant capacity; Concrete filled steel tube; Seismic response; Restoring force characteristics; Crack; Local buckling; Collapse of frame; Damage factor

The seismic response and damage of many concrete filled steel tube frames (CFT frames) under strong ground motion have been analyzed numerically and it is pointed out that the ultimate earthquake resistant capacity of CFT frame, which is decided on the basis of the dynamic collapse of CFT frame, is strongly effected not only by the story-shear strength distribution and the column-over-design factor but also by the filled concrete-to-steel tube strength ratio.To predict the ultimate earthquake resistant capacity of CFT frame and the effects of these design factors on it, a simple design formula is derived from the calculated seismic responses of CFT frame. It is ascertained that the formula is simple but it can approximate well the damage ratio of CFT frame that is corresponding to the ultimate earthquake resistant capacity of it.

对多个钢管混凝土框架在强震作用下的地震反应和破坏进行了数值分析，指出钢管混凝土框架的极限抗震能力不仅受层剪强度分布和柱跨设计系数的影响，而且还受钢管混凝土强度比的影响。为了预测钢管混凝土框架的极限抗震能力以及这些设计因素对其的影响，根据计算的钢管混凝土框架的地震反应，推导了一个简单的设计公式。结果表明，该公式计算简单，但能较好地逼近钢管混凝土框架的损伤率，与框架的极限抗震能力相对应。

项目成果

M.Saisho, K.Goto: "Ultimate Earthquake Resistant Capacity of CFT-Frame"Proceedings of 13^<th> World Conference on Earthquake Engineering. 2613. 1-15 (2004)

M.Saisho，K.Goto：“CFT 框架的终极抗震能力”第 13 届世界地震工程会议论文集。

M.Saisho: "Dynamic Collapse of CFT-Frame under Extremely Strong Ground Motion"Proceedings of 13^<th> World Conference on Earthquake Engineering. 1877. 1-15 (2004)

M.Saisho：“极强地震动下CFT框架的动态倒塌”第13届世界地震工程会议论文集。

M.Saisho, K.Goto: "Ultimate Earthquake Resistant Capacity of CFT-Frame"Proceedings of 13^<th> World Conference on Earthquake Engineering (13WCEE). Paper.2613. 1-15 (2004)

M.Saisho，K.Goto：“CFT 框架的终极抗震能力”第 13 届世界地震工程会议 (13WCEE) 会议记录。

M.Saisho: "Dynamic Collapse of CFT-Frame under Extremely Strong Ground Motion"Proceedings of 13^<th> World Conference on Earthquake Engineering (13WCEE). Paper No.1877. 1-15 (2004)

M.Saisho：“极强地震动下 CFT 框架的动态倒塌”第 13 届世界地震工程学会议 (13WCEE) 论文集。

M.Saisho, D.Hayamichi: "Dynamic Restoring Force Model of RC-Column under Seismic Load"Proceedings of 13^<th> World Conference on Earthquake Engineering. 1867. 1-14 (2004)

M.Saisho，D.Hayamichi：“地震荷载下RC柱的动态恢复力模型”第13届世界地震工程学会论文集。