Study On Mechanical Properties Of Steel Bone Reinforced Ceramide Microporous Concrete Composite Floor

Under the background of building industrialization,this paper proposes a new type of prefabricated steel bone reinforced ceramide microporous concrete composite structure composite floor,that is,steel skeleton formed by cold-formed thin-wall Csection steel,stiffened ribs and steel mesh.The middle composite layer is extruded polystyrene board and then poured ceramide microporous concrete to form a whole.Cold-formed thin-wall steel has light and high strength mechanical properties.Ceramide microporous concrete achieves the effect of light weight under the same strength condition,and composite extruded polystyrene board in the middle,so that the composite floor of the composite structure can achieve light and high strength,so as to reduce the weight of the structure.In this paper,the flexural capacity and horizontal flexural resistance of steel reinforced ceramsite microporous concrete composite floor structure are studied and the finite element simulation is carried out.The research contents are as follows:(1)The combination ratio and basic mechanical properties of ceramically-porous concrete were studied,and the performance of the mixture of ceramically-porous concrete was observed and tested.The results show that the performance of the mixture of ceramide microporous concrete is good and the mechanical properties meet the design requirements.(2)Two steel reinforced ceramsite microporous concrete composite slabs of different sizes were made,and the flexural bearing capacity test was carried out on them,the failure modes were observed and the test data were analyzed,and then the theoretical settlement was carried out.The test shows that the flexural bearing capacity of the composite floor of the structure form can meet the requirements of the external load allowed by the civil building floor.Through the theoretical analysis,the experimental value is not much different from the theoretical calculation value,which can provide theoretical calculation for it.(3)Using ABAQUS finite element simulation,the study shows that the simulated values are in good agreement with the test values,and the analysis of the influence of different parameters on the flexural capacity of the composite floor slab with steel bone reinforced ceramsite microporous concrete composite structure is carried out.The simulation shows that the longitudinal reinforcement ratio has the greatest influence on the flexural capacity of the composite floor slab with steel bone reinforced ceramsite microporous concrete composite structure.The thickness of C type steel has the second effect,and the strength of ceramide concrete has the least effect.(4)Under the premise of "strong joint,weak member",the horizontal load transfer of composite floor slab reinforced by steel bone ceramsite microporous concrete composite structure is studied.The horizontal bending test of a composite floor slab reinforced by steel bone ceramsite microporous concrete composite structure is carried out.Through analyzing the test phenomenon and test data,the test shows that,The deformation of the composite floor with steel bone reinforced ceramide microporous concrete composite structure is small and the in-plane stiffness is large enough.The finite element analysis is carried out,and the difference between the simulated value and the test value is small,which indicates the accuracy of the finite element simulation.By comparing the influence of different parameters on the horizontal bending performance,it shows that the horizontal bending capacity in the long direction of the side plate is greater than that in the vertical direction and the long direction of the plate.The horizontal flexural capacity of the composite floor slab with reinforced ribbed steel bone reinforced ceramide microporous concrete composite structure is greater than that of the composite floor slab without stiffened ribs,and the horizontal flexural capacity of the composite floor slab with reinforced steel bone reinforced ceramide microporous concrete composite structure has little difference with that of the ordinary concrete floor.By calculating the horizontal load,it is concluded that the horizontal flexural bearing capacity of the composite floor slab of the steel-bone reinforced ceramide microporous concrete composite structure is much greater than the calculated horizontal load,which indicates that the in-plane rigidity of the composite floor slab of the steel-bone reinforced ceramide microporous concrete composite structure is large enough to be regarded as a rigid body when the horizontal load is transferred.