The Seismic Damage Study And Finite-element Analysis For Concrete-gypsum Outer Wall With Heat Preservation Function

At present,Chinese housing industry is in transition period,development of new energy saving green building structure system,and Elimination of old energy wasting structure system is on the way.Concrete column-gypsum outer wall with heat preservation function is a new type of green building shear wall system,we have a lot of research on it in recent years.On the basis of early research,we make further study of its seismic performance and Seismic damage performance.The research mainly from the following three aspects.Through the test of three outer walls under low cyclic loading,we obtain the seismic performance index parameters of outer walls.Through the analysis of its damage phenomenon and hysteresis curve,we can see it have good seismic performance.Through the analysis of damage characteristics of gypsum board and plastic deformation characteristics,we can see it have good seismic ductility characteristics.On the basis of seismic performance test,we do the study on seismic damage.In this part we first introduce the development of seismic damage study.Then on the basis of early study,the seismic performance test,and Yao’s model,a two-parameter seismic damage model of concrete column-gypsum outer wall is presented.Through the test of three outer walls under low cyclic loading,study the failure process and the mechanical characteristics of the outer walls,and damage model parameters are determined.At last the damage indexes are proposed for different performance levels of outer walls with heat preservation function,and the damage index allowance of three-level seismic design are suggested.Finally,through the finite-element analysis of concrete column-gypsum outer wall,we do the comparison between finite element analysis results and seismic test results,providing theoretical basis for its apply of thick plate in higher floors.