微震监测在地基土体变形预测中的有效性研究

Meizhou City,Guangdong Province,is located in the seismic zone of South China,and in recent years there have been as many as 1,000 large and small earthquakes,belonging to the weak seismic zone.In this study,the"National Comprehensive Disaster Reduction Demonstration Community",Qilixi Village,Fengxi Forestry Farm,Daipu County,was selected as the field monitoring site,which has complex geological structure,various types of foundation soil,and is susceptible to geologic hazards,and is an ideal area to study the degree of deformation during crustal movement.It is an ideal area to study the deformation degree of foundation soil during crustal movement.In this study,a detailed comparative analysis of different methods for assessing the seismic response of structures,focusing on maximum displacement and collapse assessment,was carried out by microseismic monitoring of vibrations generated by rupture of rock bodies or vibrations of other objects.The results obtained through modal spectrum analysis,nonlinear dynamics analysis and incremental nudge analysis applied to specific structures are compared.It was found that the choice of duration and the consideration of ductility are crucial for obtaining accurate predictions.The results of the nonlinear dynamics analysis of the building response indicate that earthquakes will have a devastating effect on the structures studied,highlighting the importance of finite element method modeling in predicting plastic hinge formation and assessing structural safety.These findings highlight the importance of utilizing multiple analysis methods and detailed modeling to fully understand the seismic behavior of structures and ensure adequate resistance and stability to extreme events.