Research On Bearing Capacity And Deformation Performance Of Light Steel And Foam Concrete Composite Wall

The purpose of this research is to study the new composite wall structure composed of two materials: light steel and foam concrete.Foam concrete,which has advantages of light weight,heat insulation and fire resistance,was used as the basic material and combined with light steel.The idea of light steel and foam concrete composite wall was put forward based on the fact that the composite wall combines the advantages of two materials.It adopted the cold-formed thin-walled steel connected by welding and self tapping screws as the wall skeleton,and has advantages of light weight,high strength,good seismic performance and environmental protection,etc.In order to study the new wall,experiments and theoretical analysis were carried out in this paper.The main contents are as follows.1.A total of six groups of full-scale composite wall were designed,and the loading tests were carried out in the school structure test center.The failure characteristics of the composite wall,the strain changes of each part and the displacement of the wall were studied in the experiments,which provided basic data for the theoretical analysis.2.The tests of cold-formed C-shaped steel and foam concrete composite wall mainly focused on the influence of changes of cold-formed steel spacing and foam concrete density on the shear capacity of the composite wall.3.Finite element software ABAQUS was used to establish the calculation model of the composite wall.Through comparison and verification with the test results,the influence of axial compression ratio,foam concrete,steel ratio and transverse tie bars on the bearing capacity of the wall was analyzed,and the concrete conclusions were given.