Research On Seismic Performance Of Stepterrace Masonry Structure Based On Dynamic Elastoplastic Analysis

With the rapid development of society,mountain architecture is widely used in the city.However,the study of mountain architecture is far away from the requirements of engineering applications,specially the mountain lamellar masonry structure construction.Because concrete materials are increasingly used,masonry materials are less researched on.But there are still a large number of existing structural buildings in the mountainous lamellar masonry structure,the force characteristics of the lamellar masonry structure are very different from the flat layer structure.So it is necessary to study the seismic performance of masonry structures in mountainous areas.This paper uses Abaqus software to compare the anti-seismic performance of the lamellar structure with different layers and spans to study its seismic performance in mountainous areas.By the dynamic elastoplastic analysis,the seismic behavior of the layered masonry structures in mountainous areas was studied under small earthquakes,moderate earthquakes,and large earthquakes,based on the maximum displacements of the model,the maximum lateral displacements,and the weak layers of the model shears.The main research contents and results are presented as follows:The four-layer and three-span lamellar masonry structure model and the flat layer model can meet the seismic requirements in China,which are “ in small earthquakes it is not bad,in moderate earthquakes it can be repaired,and in large earthquakes it doesn`t collapse.The weak layer of the lamellar masonry structure is generally a top cavable layer and the maximum interlayer displacement angle of the structure under earthquake is usually in this layer.So it is also most likely to wall shear failure in this layer.In the case of the same number of stories and the floor number,the seismic performance of the layered masonry is better than that of the flat-layer masonry structure in the horizontal X direction.When the number of layers dropped is the same,the anti-seismic performance of the layered masonry structure with many layers dropped is better in the horizontal X direction.When the number of layers dropped is the same,the anti-seismic performance of the layered masonry structure with many layers lost is better in the horizontal X direction.The acceleration peak of the layered masonry structure increases with the increase of floors,and the maximum is at the top...