| 李惠,刘金龙,马赫,欧进萍.基于OpenSees平台的SMA被动阻尼器及其在斜拉桥减震中的应用[J].计算力学学报,2009,26(3):374~378 |
|
| 
码上扫一扫！ |
| 基于OpenSees平台的SMA被动阻尼器及其在斜拉桥减震中的应用 |
| Control on nonlinear seismic response of cable-stayed bridge using SMA damper based on OpenSees |
| 投稿时间：2008-08-15 |
| DOI：10.7511/jslx20093016 |
| 中文关键词: SMA阻尼器 OpenSees 斜拉桥 抗震 残余变形 |
| 英文关键词:SMA damper OpenSees cable-stayed bridge seismic residual deformation |
| 基金项目:973计划(2007CB714204);国家科技支撑计划(2006BAJ03B06)资助项目. |
|
| 摘要点击次数: 1911 |
| 全文下载次数: 2071 |
| 中文摘要: |
| 基于OpenSees平台编制形状记忆合金SMA(Shape Memory Alloys)可恢复材料的本构关系模型,并将其加入OpenSees材料库;提出一种SMA阻尼器,并将其安装在斜拉桥桥塔与主梁之间,通过数值分析研究SMA阻尼器初始刚度、屈服后刚度以及卸屈比变化对其减震性能的影响;进一步对比不同体系斜拉桥的破坏模式,分析SMA阻尼器对斜拉桥抗震性能的改善,以及SMA阻尼器对斜拉桥残余变形的自恢复效果。 |
| 英文摘要: |
| Shape memory alloys (SMA) are materials with recoverable property. The software of stress-strain relationship of SMA is written and added into material library in OpenSees. A SMA damper with special configuration, which guarantees the SMA wires in damper being elongation regardless of motion direction, is proposed and incorporated into the bridge between the deck and tower. A parametric analysis of seismic response of the bridge with SMA damper under near-fault earthquake ground motion is conducted. Furthermore, the seismic response and failure modes of the cable-stayed bridge with three kinds of connecting configurations are investigated and compared with each other. The effects of SMA damper on the reduction of maximum seismic response and the control of residual deformation are verified. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
