Abstract:The traditional methods of analyzing the dynamic characteristics of masonry structure in low-rise buildings are easily disturbed by the external environment, and masonry structures have poor structural integrity, which leads to low accuracy of dynamic characteristics analyses. To improve the seismic performance of masonry structures in low-rise buildings, a method for dynamic analysis of masonry structure in low-rise buildings under earthquake is proposed in the study. First, the natural frequency of the masonry structure is identified using the auto-power spectrum of the masonry structure of low-rise buildings. Then the natural frequency is tested by a 941 B ultra-low frequency vibrometer, and the area of noise interference in the vibration waveform can be selected to obtain the time domain and frequency domain waveforms. Finally, a 3D refined model of masonry structure is established according to the time domain and frequency domain waveforms. Based on the model, the simulation results of low story masonry structure are obtained by a subspace iteration algorithm, and the influences of core column, ring beam, and other structural measures on the dynamic characteristics of masonry structure under earthquakes are analyzed. The experimental results show that the proposed method analyzes the dynamic characteristics of masonry structure in low-rise buildings under earthquakes more accurately than traditional methods.