The Pressure Plate - Concrete Composite Slab Finite Element Analysis

With the rapid development of economy, the consciousness of environment protection is improved. But in construction industry, large numbers of clay brick and wood molding are used in reinforced concrete construction and masonry construction. According to estimation, hundred thousands hectare plough are destroyed and ten thousands hectare forest are hagged just this item, which certainly will bring serious breakage to entironment. In order to keep balance of ecosystem and maintain durative development, lightweight steel structures will be developmental direction of residence construction for the future. As a common form of floor in lightweight steel structure, profiled steel deck-concrete composite slab has been widely used in high commercial and civil building, public building and many-stories factories for its advantages, such as, small dead load, better ductility, large overall horizontal rigidity, better anti-seismic, fast construction speed, less consumption of wood, less cost.Performance of composite slab is influenced by a large number of parameters. In order to investigate influence of every parameter on performance of composite slab, experimentation with different parameters must be carried out. And this experimentation, especially full-scale experimentation of composite slab has numerous parameters and requires large numbers of labor force. Finite element method can adjust value of every parameter during analysis and analyze influence of change of parameter, which can also achieve aim. So it is necessary to use finite element method to analyze profiled steel deck-concrete composite slab.As finite element software, ANSYS is used to analyze performance of profiled steel deck-concrete composite slab in this paper. Jobs in this paper are showed as follows.Firstly according to characteristic of composite slab with full and partial shear connection, finite element model is obtained. Through repeatedly debugging and compared with experimental results, an accurate method is found to create and solve a completed finite element model of composite slab.Using above-mentioned model to solve composite slab, strain of concrete and profiled steel deck, deflection, slide and bearing capacity of composite slab are analyzed. At the same time, performance of two-way composite slab with different boundary conditions and different span-ratio are analyzed. And according to computational results, a formula about longitudinal shear bearing capacity of composite slab with profiled steel deck YX-75-200-600 is made.At last, the influence of several parameters on performance of composite slab is analyzed, such as steel thickness and shape, concrete thickness, concrete strength, shear span and space of shear connector. And conclusions can make rational in choice of profiled deck in practice...