带黏滞阻尼器高层钢结构的抗震抗风性能分析

Analysis of Viscous Damper in High-Rise Steel Structure on Anti-Seismic and Wind Resistance Performance

随着黏滞阻尼器在高层钢结构中的应用,需要进一步了解带黏滞阻尼器高层钢结构抗震和抗风性能.采用ANSYS有限元分析软件,对高层钢结构建立了三维模型.对黏滞阻尼器阻尼系数进行了参数分析,得到黏滞阻尼器比较合理的阻尼系数,然而进行了弹塑性抗震时程分析和随机风振分析.对比分析了结构加阻尼器前后在地震和风振中的动力特性.结果表明,加黏滞阻尼器后,结构的地震反应减小10%左右,风振反应减小50%左右.

As the application of viscous dampers in high-rise steel structure, it is necessary to introduce the performance of anti-seismic and wind resistance. By finite element analysis software, 3D modal of high-rise steel structure was established. Coefficient parameters of viscous damper were analyzed, the rational parameters were proposed, and the elasticity-plastic antiseismic time-history analysis and random wind vibration were performed. Dynamic characteristics of the structure before and after adding viscous damper were contrasted through anti-seismic and wind resistance . The results show that the responses of earthquake and random wind vibration are reduced by 10% after adding viscous dampers, and responses of random wind vibration are reduced by 50% after adding viscous dampers.