Numerical Study On Parameters Influence The Seismic Performance Of Prefabricated Shear Wall Connected With Alveolar

Quasi-static tests were conducted on 2 specimens to study the influence of Embedded-column ratio of longitudinal reinforcement on seismic behavior of prefabricated shear wall connected with Tooth-grooved.Damage process of specimen was recorded in detail and the damage form of specimens was analyzed.Apply the finite element method of OpenSees and Abaqus for the numerical simulation of specimen.Curve of numerical simulation results agree well with the test curve.Pushover analysis by means of Abaqus can better simulate the failure process and failure form of the specimens.On the basic,using finite element software to simulate the influence of axial compression ratio,shear span ratio,length of concealed column and reinforcement ratio of concealed column on seismic behavior,ductility and failure pattern of prefabricated shear wall connected with Tooth-grooved.This paper conducted the following several aspects:Design 2 pieces of prefabricated shear wall witch reinforcement ratio are 1.13% and 3.14%.Experimental result shows that increasing the ratio of longitudinal reinforcement of concealed column can improve the performance of the energy dissipation capacity and ductility performance of specimens.Tooth groove connection node can transfer reinforcement stress effectively.Using the zero length element provided by Open Sees to simulate old and new concrete interface features.Tooth groove connection prefabricated shear wall model is established for hysteresis analysis.Calculation hysteresis curve accord well with those test one,can accurately reflect the specimen stiffness and strength degradation phenomenon in the process of loading.Using nonlinear spring element named Spring-2 provided by Abaqus to simulate old and new concrete interface features.Tooth groove connection prefabricated shear wall model is established for pushover analysis.Development of the plastic damage and plastic strain can better to simulate the damage process of test specimen.Using finite element software to simulate the influence of axial compression ratio,shear span ratio,length of concealed column and reinforcement ratio of concealed column on seismic behavior,ductility and failure pattern of prefabricated shear wall connected with Tooth-grooved.Analysis results showed that the energy dissipation capacity is decreased and ductility is reduced with the increase of axial compression ratio.Failure pattern are basically the same under different axial compression ratio.Specimen energy dissipation capacity and ductility performance is weaker when shear span ratio is 1.5,and the damage has certain characteristics of shear failure.The energy dissipation capacity and ductility less affected by shear span ratio when it's above 2.0.Specimen energy dissipation capacity enhancement,but the ductility decreases with the increase of length of concealed column.Considering the damage of vertical seam strength due lack of strength.The energy dissipation capacity and ductility less affected by stirrup ratio of concealed column.