Abstract：In this work, the dynamic characteristics of Kaiyuan pagoda were tested by the ambient vibration test technique, and a new arrangement scheme of spatial measuring points (Co-parallel test) was proposed to effectively measure the translational and torsional modal components of the pagoda. The natural frequency and vibration mode were obtained by using Welch self-power spectral density function and stochastic subspace identification method. By referring to the structural dynamics theory and the measured results, the inter-floor stiffness of the two orthogonal directions of the northeast and northwest of the pagoda were derived. Based on the ABAQUS platform, the finite element model was established. Compared with the actual measurement, the modal analysis result of the numerical model has smaller error, indicating that the model is reliable and can provide a numerical model for the subsequent dynamic response analysis of the pagoda.
杨娜 刘威 张淑慧 白凡. 基于环境激励测试的开元寺塔动力性能分析[J]. 土木工程学报, 2021, 54(9): 79-87.
Yang Na Liu Wei Zhang Shuhui Bai Fan. Dynamic performance analysis of Kaiyuan pagoda based on ambient vibration test. 土木工程学报, 2021, 54(9): 79-87.
