建筑结构学报2026，Vol.47Issue(8)：201-211,11.DOI:10.14006/j.jzjgxb.2026.0051
楼阁式木构单向振动台试验及减隔震性能分析
Unidirectional shaking table test and rocking isolation analysis of pavilion-type timber frame
摘要
Abstract
To reveal the multi-story rocking response and the seismic isolation and energy-dissipation mechanisms of pavilion-type timber structures represented by the Yingxian Wooden Pagoda,a 1/6.8-scale pure timber frame specimen was designed based on the structural characteristics of the upper three visible stories and two concealed stories of the Yingxian Wooden Pagoda,and unidirectional shaking table tests were conducted.The El Centro ground motion was adopted as the input,and seven levels of seismic excitation with peak ground accelerations ranging from 0.055g to 1.0g were successively applied in the X direction.The results showed that,with increasing peak ground acceleration,the dominant deformation mechanism progressively evolves from rotation of individual Dou-Gong components to column rocking in the visible stories,intercomponent sliding,and overall rocking of the paving layers.At PGA levels of 0.62g and above,local damage develops in the Lu-dou and Pupai-Fang,with the most pronounced damage observed in the third visible story.The first natural frequency of the structure remains approximately constant at 0.83 Hz for PGA levels up to 0.4g.Following excitation at 1.0g,it decreases to 0.68 Hz,representing an 18.1％reduction,while the damping ratio increases to 0.102.Phase offsets between the interstory drift ratio and floor acceleration responses of the visible stories indicate that rocking occurred at different times across the stories.Under 1.0g excitation,the peak interstory drift ratios of the first,second,and third visible stories reach 5.97％,4.18％,and 5.22％,respectively.Following excitation,the maximum residual interstory drift ratio is only 0.58％,indicating favorable self-centering capacity.The energy dissipation is concentrated mainly in the visible stories,with the second visible story making a relatively large contribution.The principal mechanisms includes frictional rotation at the mortise-tenon joints,sliding among the Dou-Gong components,and localized damage to structural members.These results demonstrate that pavilion-type timber structures achieve seismic isolation and energy dissipation through the combined action of rocking and frictional energy dissipation.关键词
楼阁式木构/柱摇摆/多层隔震/重力自复位/振动台试验/摩擦耗能Key words
pavilion-type timber structure/column rocking/multi-story seismic isolation/gravity self-centering/shaking table test/frictional energy dissipation分类
建筑与水利引用本文复制引用
贾良玖,黎思成,孙祚帅,项平..楼阁式木构单向振动台试验及减隔震性能分析[J].建筑结构学报,2026,47(8):201-211,11.基金项目
国家自然科学基金面上项目(52478545),中央高校基本科研业务费(2024年7月),上海市教委极端环境建造未来学科(2025年11月). （52478545）
