An isolation bearing for highway bridges using shape memory alloys
An isolation bearing for highway bridges using shape memory alloys
复制标题
DOI：
10.1016/j.msea.2006.05.098
复制
发表时间：
2006-11
期刊：
影响因子：
6.4
通讯作者：
E. Choi;T. Nam;J. T. Oh;Baik-Soon Cho
中科院分区：
文献类型：
--
作者：
E. Choi;T. Nam;J. T. Oh;Baik-Soon Cho
传统的铅芯橡胶支座在强烈的地面运动作用下会产生不稳定和不可恢复变形的问题。作为解决问题的一种方法，本研究提出了一种新的概念，其中形状记忆合金丝被纳入一个弹性支座的隔震装置。以一座三跨连续钢桥为例进行抗震分析，比较铅芯橡胶支座和建议支座的性能。建议的支座有效地限制了桥面板在强地面运动下的相对位移，并恢复了几乎原始的未变形形状。
Conventional lead-rubber bearings may have a problem of instability and unrecovered deformation with a strong ground motion. As a way of solving the problem, this study proposes a new concept of an isolation device in which shape memory alloy wires are incorporated in an elastomeric bearing. A three-span continuous steel bridge was used for seismic analyses to compare the performance of lead-rubber and the proposed bearings. The proposed bearings limit the deck relative displacement effectively with strong ground motions and recover almost original undeformed shape.