摘要
根据悬摆减震原理,结合形状记忆合金(shape memory alloys,简称SMA)的超弹性,研发了形状记忆合金复合悬摆减震系统(shape memory alloy-suspension pendulum damping system,简称SMA-SPDS)。建立了SMA-SPDS的Matlab/Simulink仿真模型,对一个1/10的小雁塔结构缩尺模型进行了仿真分析,将仿真分析值与振动台试验结果值验证分析后,进行了小雁塔原型结构工程的优化设置,进一步用该方法对小雁塔原型结构进行了减震分析。结果表明:SMA-SPDS可以提高原型结构的整体性,增强了小雁塔原型结构的抗震性能;SMA-SPDS系统性能稳定,且随地震强度的增加,减震效果越明显,尤其是对层间位移角的控制效果显著,大震作用下层间位移角可减小50%以上;小雁塔仿真计算模型可以较好地反映其原型结构的真实情况,验证了该仿真分析方法的可行性,可为类似砖石古塔结构的地震保护提供参考。
Based on the suspension damping principle and the superelasticity of shape memory alloy(SMA),the shape memory alloy compound suspension damping system(SMA-SPDS)is developed.The Matlab/Simulink simulation model of SMA-SPDS is established,a 1/10 scale model of Xiaoyan Pagoda structure is simulated and analyzed.After verifying and analyzing the values of simulation analysis and shaking table test results,the optimal setting of the prototype structure of Xiaoyan Pagoda is carried out,and the damping analysis of the prototype structure of Xiaoyan Pagoda is further carried out by using this method.The results show that SMA-SPDS can improve the integrity of the prototype structure and enhance the seismic performance of Xiaoyan Pagoda prototype structure;SMA-SPDS has an obvious effect on reducing the seismic response of Xiaoyan Pagoda structure,and with the increase of seismic intensity,the damping effect is more obvious,especially for the control effect of the inter-layer displacement angle,the displacement angle of the lower layer can be reduced by more than 50%under the large earthquake;The simulation model of Xiaoyan Pagoda can better reflect the real situation of its prototype structure and verify the feasibility of the simulation analysis method,which can provide a reference for seismic protection of similar ancient pagoda structures.
作者
杨涛
刘德明
王社良
李彬彬
YANG Tao;LIU Deming;WANG Sheliang;LI Binbin(School of Urban Planning and Municipal Engineering,Xi'an Polytechnic University Xi'an,710048,China;School of Civil Engineering,Xi'an University of Architecture and Technology Xi'an,710055,China)
出处
《振动．测试与诊断》
EI
CSCD
北大核心
2021年第3期571-580,626,共11页
Journal of Vibration,Measurement & Diagnosis
基金
陕西省自然科学基础研究计划资助项目(2019JQ-578)
陕西省教育厅资助项目(18JK0332)
国家自然科学基金资助项目(51678480)
西安建筑科技大学结构与抗震教育部重点实验室资助项目(KL-SEER-ME-202003)。
关键词
小雁塔
悬摆减震系统
仿真分析
地震响应
MATLAB
Xiaoyan Pagoda
suspension damping system
simulation analysis
seismic response
Matlab
