Study On Seismic Behavior Of Assembled Shear Wall

In recent years,in order to realize the transformation,upgrading and sustainable development of the construction industry,housing industrialization and green building have been included in the process of vigorous publicity and promotion.Fabricated reinforced concrete structure has become a research hotspot in the construction industry because it conforms to the sustainable development direction of housing industrialization.Among them,assembled hollow shear wall is a low-carbon environmental protection wall structure into the research ranks.Hollow wall not only saves construction materials,easy to operate,but also has good thermal insulation performance and superior seismic performance,which is more and more favored by the construction field.Therefore,in order to meet the development needs of the construction industry,reduce the cost of the project,speed up the construction process and build green energy-saving buildings,it is particularly important to study a new type of assembled hollow shear wall structure.With the gradual improvement of people's demand for building appearance and internal use,single building shape and internal structure tend to diversify in recent months.There are many and complex cases of opening openings on shear walls,which not only enrich the structural types of buildings,but also provide a research direction for the mechanical properties of shear walls with openings.In order to test the seismic performance of a new type of assembled hollow shear wall,three kinds of single-piece assembled hollow shear wall structure models with different width of holes and one piece of assembled solid shear wall structure model are established by numerical simulation.By comparing the assembled hollow shear wall model with the solid shear wall model in low cycle direction The seismic performance of the assembled hollow shear wall structure under earthquake is studied by the simulation test results under complex loads.At the same time,three kinds of assembled shear walls with different openings are established,and the seismic performance of assembled shear walls with different openings is studied by numerical simulation method.The results show that:(1)Compared with solid shear walls,hollow shear walls have similar hysteretic curves in shape and fullness,and have strong seismic performance;with the increase of the width of holes in the wall,the bearing capacity and stiffness of hollow shear walls decrease,but the decrease is not significant,so hollow shear walls can be used as assembled shear walls with non-reinforced stories.(2)Opening rate has a certain influence on the seismic performance of shear walls.With the increase of opening rate,the bearing capacity,stiffness,strength and seismic performance of shear walls decrease,but the difference is not significant.Assembled open shear walls have a certain ability to dissipate seismic energy.(3)Fabricated hollow shear walls and fabricated open shear walls can be used in multi-storey and small high-rise buildings with low seismic grade or low shear force.(4)The research in this paper has certain reference significance for the development of assembled shear wall structure.