The Finite Element Analysis On Shear-bond Performance Of Composite Slabs With Light-weight Aggregate Concrete

In recent years, light weight aggregate concrete composite slab is very suitable for using in high-rise structure and steel structure due to the light self-weight, high speed of construction and save the template. However, the study of lateral shear bonding performance of light weight aggregate concrete composite slab is relatively poor.Based on the theory of finite element analysis, the paper uses ANSYS to establish mathematical model of the lightweight aggregate concrete composite slab. And compared with the actual test results, in order to verify the correctness of the mathematical model, and analyzed the light weight aggregate concrete composite floor slab longitudinal shear bond damage mechanism.In the paper, based on considering the spacing of lateral horizontal shear rebar, shear span, the thickness of composite slab,32pieces of finite element simulation of composite slab is designed, and analysis respectively, studied the above factors on the bearing capacity of composite floor slab, the influence of the deformation, failure pattern, etc.Using the correction of m, k method to linear regression analysis the result of mathematical models, get longitudinal shear bearing capacity calculation formula of YX-76-344-688type lightweight aggregate concrete composite slab, to provide a certain reference in engineering design of this type composite slab.