侯俊锋¹，苏三庆¹，王社良²
（1 西安科技大学建筑与土木工程学院，西安710054；2 西安建筑科技大学土木工程学院，西安710055）

[摘要]  对某砖石古塔的现状进行了分析，提出了相应的抗震加固措施。针对该古塔地震作用下可能的破坏形式，采用了一种单拉式SMA阻尼器，并对阻尼器的理论模型和滞回曲线进行了分析和模拟，探讨了其安放位置。通过地震反应时程分析，研究了两种加固形式在不同地震激励下的反应。结果表明，对砌体进行补强并采用SIvIA阻尼器可以有效减轻古塔的地震响应。
[关键词]  古塔；形状记忆合金；阻尼器：时程分析

Research on seismic strengthening of an ancient tower
Hou Junfeng¹, Su Sanqing¹, Wang Sheliang²
(1 College of Architecture and Civil Engineering，Xi'an University of Science and Technology，Xi'an 710054, China;
2 College of Civil Engineering，Xi'an University of Architecture and Technology；Xi'an 710055, China)
   
Abstract: The existing state of an ancient tower is introduced and the strengthening metbod is proposed. For the special destroying modal of this tower under earthquake, a tensioned shape memory alloy(SMA) damper is presented. Its hysteretic curve and riding position are studied. A comparison is made for the structural response of two strengthening methods under different earthquake excitation through time history analysis. It is effective to alleviate the vibration response through installing the SMA damper.
Keywords: ancient tower; shape memory alloy; damper; time history analysis