摘要
首次提出了利用NiTi形状记忆合金伪弹性、高耗能、大阻尼、抗疲劳、耐腐蚀的特性来抑制单索面拱桥桥面横向扭转、纵飘和竖弯等多维振动方法.并利用Midas/Civil软件建立了安装NiTi形状记忆合金拉索前后的单索面拱桥的全桥有限元对比计算分析模型,进行了验证校核.研究结果表明:安装NiTi拉索可大幅度减小单索面拱桥纵向位移和横向扭转位移,并明显提高行车舒适度.
NiTi shape memory alloys （ SMA）, flexibility, energy-intensive, large damping, antifatigue, corro- sion, are first applied to restrain deck torsional, longitudinal floating and vertical bending of multidimensional vibration . The comparative analysis models of single cable plane arch bridge, installing NiTi shape memory alloy cable or not, are established by the Midas/Civil software to validate its effects. The results of the study show that installing NiTi SMA cable can greatly reduce longitudinal displacement and horizontal torsional displacement and obviously improve the driving comfort for the single cable plane arch bridge.
出处
《广州大学学报（自然科学版）》
CAS
2012年第6期65-68,共4页
Journal of Guangzhou University:Natural Science Edition
基金
国家自然科学基金项目(11272095)
广东省科技计划项目(2012B040302005)
广州市科技重大攻关项目(2011Y2-00006)
广州市属高校科研项目(10A005)资助
关键词
单索面拱桥
SMA拉索
振动控制
桥面振动
single cable plane arch bridge
shape memory alloy
vibration control
deck vibration
