建筑结构学报2017，Vol.38Issue(12)：154-162,9.DOI:10.14006/j.jzjgxb.2017.12.018
内填黏土实心结构砖塔振动台试验研究
Shaking table test on brick masonry pagoda with solid structure in-filled by clay
摘要
Abstract
To study the dynamic response and damage mechanism of masonry pagodas with solid structure,the shaking table test has been done to a structure model scaled to 1:8 from the Xuanzang Pagoda at Xingjiao Temple in Xi'an,Shaan'xi Province.Excited by unidirectional,bi-directional and tri-directional earthquake waves,displacement response and acceleration response at the floor were tested and the failure pattern of the structure was observed.Then the variation law was analyzed in terms of dynamic characteristics of the structure under different failure situations,and compared for the dynamic response of each floor under different load cases.The results show that horizontal cracks and oblique cracks are observed at the bottom floor of the pagoda affected by earthquake.As the seismic intensity become higher,the damage regions are extended to the top,and the vibration frequency of the structure is decreased.The number of peak value points is increased on the frequency response curve.At the same intensity,the peak value of horizontal response is almost equal under different load cases but the vertical acceleration responses are different under different earthquake waves.The dynamic amplification coefficient curve is distributed in S shape,the maximum value of horizontal response is located at roof and the vertical response is in the middle floor.Therefore,the failures to masonry pagoda are affected by horizontal and vertical earthquake components,and the seismic weak part is the bottom and mid of the structure.关键词
砖石古塔/振动台试验/地震反应/破坏机制Key words
masonry pagoda/shaking table test/seismic response/damage mechanism分类
建筑与水利引用本文复制引用
卢俊龙,李晓蕾..内填黏土实心结构砖塔振动台试验研究[J].建筑结构学报,2017,38(12):154-162,9.基金项目
国家自然科学基金项目(51308455),陕西省自然科学基金项目(2015JM5206),陕西省博士后基金项目. （51308455）
