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| Research on damage identification of masonry pagodas based on modal flexibility curvature |
| Received:November 24, 2022 Revised:January 18, 2023 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20221124001 |
| KeyWord:masonry pagoda damage identification flexibility curvature damage mechanism |
| Author | Institution |
| 卢俊龙 |
西安理工大学 土木建筑工程学院, 西安 |
| 乔璐 |
西安理工大学 土木建筑工程学院, 西安 |
| 张晨 |
特变电工新疆新能源股份有限公司, 西安 |
| 李哲 |
西安理工大学 土木建筑工程学院, 西安 |
| 田煜 |
西安理工大学 土木建筑工程学院, 西安 |
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| Abstract: |
| Damage identification is one of the effective ways to evaluate structural performance,and the modal flexibility curvature of masonry pagodas is one of the effective parameters for damage identification.To study the relationship between the damage mechanism and the modal flexibility curvature of the ancient pagoda structure,based on the shaking table test and numerical simulation results of the structural model of Xingjiaoji pagoda,the dynamic response and damage characteristics of the pagoda under periodic loading are analyzed,and the relationship between the damage and modal parameters of the pagoda are modeled.The results show that after the cracking and damage of the tower structure,the stiffness decreases and the modal flexibility curvature increases;the acceleration and frequency domain response patterns obtained from the numerical calculation and test are consistent,the crack damage of the tower specimen continues to accumulate with the increase of loading,the damage parameters change slowly in the early stage of loading and then remain stable,and the damage process of the tower obtained from the test and simulation is consistent.Therefore,the modal flexibility curvature change of the tower is consistent with the structural damage accumulation of the masonry pagoda,which is effective and reliable for the structural damage identification of masonry pagodas. |
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