建筑结构学报2024，Vol.45Issue(9)：148-158,11.DOI:10.14006/j.jzjgxb.2023.0552
聚合阻尼减震结构体系及减震效果
Centralized damping seismic reduction structural system and its damping performance
摘要
Abstract
To address the significant difference in lateral stiffness between the outer frame and the inner core of super-tall framed-core structures,a centralized damping seismic reduction structural system was proposed.This system strategically places aggregate damping devices between the core and the outer frame to utilize the differential lateral displacements of the inner and outer substructures for energy dissipation and seismic mitigation.A theoretical analysis model of the aggregate damping seismic mitigation system was established,and its dynamic transfer function was derived.Parameter analysis was conducted,and optimal damping ratios for the system were determined based on fixed-point theory.Vibration table tests and numerical analyses were performed to validate the system.Compared to traditional structures,the new system reduces top displacement,acceleration,and inter-story shear by 26.7％,41.8％,and 64.9％,respectively,with fewer damping devices applied.Additionally,the supplemental damping ratio is increased by a factor of 6.4 compared to traditional structures.关键词
超高层框架-核心筒结构/聚合阻尼减震结构体系/参数优化/振动台试验/地震响应/减震效果Key words
super high-rise frame-core tube structure/centralized damping seismic reduction structural system/parameter optimization/shaking table test/seismic response/damping performance分类
建筑与水利引用本文复制引用
何文福,姚俊杰,许浩,尚峰,李婕..聚合阻尼减震结构体系及减震效果[J].建筑结构学报,2024,45(9):148-158,11.基金项目
国家自然科学基金项目(52108461,52078287),上海市自然科学基金项目(22ZR1422700),内蒙古自治区高等学校自然科学技术研究一般项目(NJZY23072). （52108461,52078287）
