Dong Shuo, Pan Wen, Ye Liaoyuan, Wang Jingwei
Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, Yunnan, 650500, China.
Yunnan Seismic Engineering Technology Research Center, Kunming, Yunnan, 650500, China.
Sci Rep. 2025 Apr 6;15(1):11742. doi: 10.1038/s41598-025-94016-y.
With the acceleration of modern urbanization, the height and density of buildings are increasing, and the need for seismic protection in structural design is becoming more and more urgent. The robust recovery, great reusability, and exceptional seismic performance of the viscous damper make it a popular choice for high-rise construction. To improve the seismic damping effect of the building structure, the study employs methodologies that the restoration force model simulates the viscous dampers' resistance against the seismic forces, and the time course analysis method allows for analysis of the dynamic response of structures to seismic activities through time in realigning the position of the viscous damper. Furthermore, the study utilizes the multi-objective optimization method to optimize the distribution parameters of the damping structure, thereby enabling the design of a displacement-based vibration-damping structural configuration for the viscous damper. The results revealed that the maximum inter-story displacement angle produced by the studied seismic-damped structural design under five sets of natural seismic waves used for validation is 1/909, which is less than the displacement angle limit value of 1/1000, and meets the requirements of the Chinese code for seismic design of buildings (GB 50011 - 2010). In conclusion, the study of design for viscous dampers using displacements offers positive benefits with an inter-story displacement angle decrease of 41.93%, acceleration decrease of 16.27%, and layer displacement decrease of 6.72%. The conclusion would be useful for decision-making to give estimates of seismic losses during construction.
随着现代城市化进程的加速，建筑物的高度和密度不断增加，结构设计中的抗震保护需求变得越来越迫切。粘性阻尼器强大的恢复能力、高可重复使用性和卓越的抗震性能使其成为高层建筑的热门选择。为提高建筑结构的减震效果，本研究采用恢复力模型模拟粘性阻尼器对地震力的抵抗作用的方法，以及时程分析方法通过实时调整粘性阻尼器位置来分析结构对地震活动的动态响应。此外，本研究利用多目标优化方法优化阻尼结构的分布参数，从而实现基于位移的粘性阻尼器减振结构配置设计。结果表明，在所研究的用于验证的五组天然地震波作用下，阻尼结构设计产生的最大层间位移角为1/909，小于位移角限值1/1000，满足中国建筑抗震设计规范（GB 50011 - 2010）的要求。总之，基于位移的粘性阻尼器设计研究带来了积极效果，层间位移角减小了41.93%，加速度减小了16.27%，层位移减小了6.72%。该结论将有助于在施工期间进行地震损失估计的决策。
