实心结构古塔模型频域地震响应试验研究

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (9) : 238-245.

论文

实心结构古塔模型频域地震响应试验研究

卢俊龙，李晓蕾，崔晓玲，田洁

作者信息 +

Tests for frequency domain seismic responses of masonry pagoda with solid structure

LU Junlong, LI Xiaolei, Cui Xiaoling,TIAN Jie

Author information +

文章历史 +

摘要

为研究地震作用下实心结构砖石古塔的频域地震响应与破坏机制，进行了兴教寺玄奘塔1/8比例模型振动台试验，观察结构的破坏特征，测试结构的加速速与位移反应并分析自振频率的变化特征，对比单向EL-Centro波与天津波作用下的加速度及位移频域响应曲线，分析了古塔结构频域地震响应的规律及其影响因素。结果表明：地震波激励下古塔结构模型第1层至第3层出现水平及斜向裂缝，当古塔结构发生地震损伤后，其自振频率随之降低；古塔频域地震响应峰值的分布及其所对应的频率与结构的动力特性、地震波的频谱特性有关。因此，地震作用下实心砖石古塔结构频域地震响应与结构损伤程度密切相关。

Abstract

In order to study the seismic response in frequency domain and failure mechanism of masonry pagodas with solid structure excited by earthquake, the shake table test was done to the model scaled in 1/8 for Xuanzang Pagoda in Xingjiao Temple. The failure characters of the structure were observed. The responses for acceleration and displacement were test and the variation characteristics of the vibration frequency was analyzed. The response curves in frequency domain for accelerations and displacements excited by El-Centro wave were compared to those by Tianjin wave unidirectional . The basic laws were analyzed to the responses in frequency domain and factors to masonry pagodas excited by earthquake. As results, the cracks were appeared in the structure model along horizontal and oblique form 1st floor to 3rd floor excited by earthquake wave. And the vibration frequency of masonry pagodas was lessened after the seismic damages generated in the structure. The peak value distribution of seismic response in frequency domain and the corresponding frequency were related to the dynamic characters of structure, the spectrum characters of seismic wave. Therefore, the seismic response in frequency domain of masonry pagodas are closely related to damage of the structure.

导出引用

卢俊龙，李晓蕾，崔晓玲，田洁. 实心结构古塔模型频域地震响应试验研究[J]. 振动与冲击, 2019, 38(9): 238-245

LU Junlong, LI Xiaolei, Cui Xiaoling,TIAN Jie. Tests for frequency domain seismic responses of masonry pagoda with solid structure[J]. Journal of Vibration and Shock, 2019, 38(9): 238-245

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