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| Dynamic performance and response analysis of brick-and-stone ancient tower based on separated modeling |
| Received:October 09, 2021 Revised:August 29, 2023 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20211009001 |
| KeyWord:masonry pagoda soil-structure interaction dynamic response seismic performance numerical model |
| Author | Institution |
| 卢俊龙 |
西安理工大学, 西安 |
| 周谦祥 |
西安理工大学, 西安 |
| 田鹏刚 |
陕西省建筑科学研究院有限公司, 西安 |
| 王振山 |
西安理工大学, 西安 |
| 田建勃 |
西安理工大学, 西安 |
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| Abstract: |
| In order to study the dynamic characteristics and seismic response mechanism of ancient masonry pagodas,taking Huizhao Temple pagoda in Weinan as an example,the block-lime slurry partition discrete method was used to establish the numerical models of ancient pagodas under rigid foundation conditions and considering foundation-structure interaction,and the dynamic characteristics of the pagoda were calculated and compared.The El-Centro wave,Taft wave and artificial Lanzhou wave were the inputs according to the 9-degree small earthquake,medium earthquake and large earthquake,respectively,and the displacement and acceleration responses of the structure were calculated and compared with the interaction system.The results show that after considering the soil-structure interaction,the first-order natural frequency of the ancient tower structure is reduced by 5.7%,and the second-order frequency is reduced by 45%.Under the action of El-Centro wave and Taft wave,the displacement and acceleration responses increased significantly.Under the action of large earthquakes,compared with and without considering the soil-structure interaction,the peak value of the principal tensile stress increased significantly,and the ancient tower cracked from mortar to brick and mortar simultaneously.Under the action of the artificial Lanzhou wave,after considering the soil-structure interaction,the main tensile stress and cracking deformation decrease instead.The research results can provide a reference for seismic calculation and capacity evaluation of masonry pagodas. |
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