摘要
为了减小地震对小雁塔结构的影响,利用形状记忆合金(SMA)的超弹性,结合悬摆减震理论,研发了形状记忆合金复合悬摆减震系统(SMA-SPDS),对该减震系统进行了振动台试验,探讨了SMA-SPDS的工作性能和有效性;设计并制作一个1/10的小雁塔结构缩尺模型,并将SMA-SPDS分别设置于小雁塔模型结构中进行模拟地震振动台试验,得到了设置与未设置SMA-SPDS的小雁塔模型结构的地震响应,对比分析了SMA-SPDS的减震效果。结果表明:研发的SMA-SPDS系统性能稳定,便于集成,减震效果明显,能够较好满足古塔结构的减震需求;设置SMA-SPDS后,可以明显地改变塔体结构变形规律,模型结构各点的位移响应均明显降低,特别是塔体顶部效果明显,一般情况下可减小30%;试验结果还表明,地震作用越强烈,SMA-SPDS的减震效果越明显,研发的SMA-SPDS是一种能够有效减小古塔结构地震响应的新型减震系统,对砖石古塔结构的消能减震保护具有参考价值。
Based on superelastic of SMA and combined with the suspension pendulum damping theory, a shape memory alloy-suspension pendulum damping system （SMA-SPDS） was made,and the vibration table test was carried out to study the working performance and effectiveness of SMA-SPDS under different prestrain. In order to obtain the seismic response of the small wild goose pagoda structure which is installed with SMA-SPDS or not respectively, the small wild goose pagoda structure scale model of a 1/10 was designed and made and carried out the shaking table test. The effect of earthquake reduction SMA-SPDS was analyzed. The results show that the SMA-SPDS system developed in this paper is stable, easy to integrate, and has obvious damping effect. It can meet the demand of the pagoda structure. After setting SMA-SPDS, the deformation of the tower structure can be obviously changed, and the displace response of the model structure is obviously reduced, especially the top effect, which can be reduced by 30%. The results also show that the earthquake is more intense, the damping effect of SMA-SPDS is more obvious and the research and development of SMA- SPDS is a kind of new damping system that can effectively reduce the seismic response of the masonry structure and have reference value in brick pagoda structure energy dissipation protection.
出处
《振动与冲击》
EI
CSCD
北大核心
2017年第16期113-121,共9页
Journal of Vibration and Shock
基金
国家自然科学基金(51178388
51108035)
国家重点实验室开放项目(08KF02)
陕西省工业攻关项目(2014K06-34)
西安建筑科技大学创新团队资助项目
关键词
地震响应
模型结构
有效性
抗震性能
振动台试验
seismic response
model structure
validity
seismic performance
shaking table test
