【作者】 陈云； 陈奕柏； 吕西林； 蒋欢军；

【Author】 CHEN Yun;CHEN Yi-bo;LU Xi-lin;JIANG Huan-jun;State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University;College of Civil Engineering and Architecture, Hainan University;

【机构】 同济大学土木工程防灾国家重点实验室； 海南大学土木建筑工程学院；

【摘要】 本文提出了一种基于形状记忆合金的消能减震装置,即在底层框架柱的反弯点附近设置锚固装置,形状记忆合金拉索的上端固定在锚固装置上,将其下端锚固在基础,地震时通过形状记忆合金拉索的反复变形耗散地震能量。对设置形状记忆合金拉索的多层框架与传统框架进行地震时程反应对比分析,研究结果表明形状记忆合金拉索对结构的位移反应具有显著控制效果,对结构的加速度反应也具有一定控制效果。形状记忆合金拉索的滞回环饱满,具有优良的耗能能力,因此该消能减震装置在减轻框架柱震害方面具有一定的工程应用价值和前景。更多还原

【Abstract】 This paper proposes an energy dissipative device based on shape memory alloys(SMA). By setting anchorage device under the inflection point of columns, the top of the shape memory alloy cable was installed in the anchorage device and the bottom of them was fixed in the foundation. When experiencing an earthquake, seismic energy would be dissipated by repeated deformation of the SMA cable. A new frame setting SMA cable and ordinary frame were studied through earthquake time-history analysis. The result showed that the hysteresis loop of the energy dissipative device is full. Moreover, the proposed SMA damper effectively suppresses structural displacement response. Therefore, the energy dissipation devices had a better value and prospects in engineering.更多还原