Experimental Study On Load-bearing Capacity Of A Two-Way Prestressed Laminated Concrete Slab

This paper presents detailed experimental study and ANSYS nonlinear finiteelement analysis of a Two-Way prestressed laminated concrete slab.Firstly, by the Two-Way prestressed laminated concrete slab with peripheralsimple-supported boundary the varying regularity of their load-deflection curve isresearched, and their deformation characteristics are concluded. Tests show that thiskind of panel can satisfy serviceability requirement of deformation;Based onvarying regularity of strain of steel, the load-carrying mechanism of the panel isstudied and their load-carrying model is proposed;With failure type and feature ofthe panel the principal factors influencing their flexural performance are investigated,and general suggestions about design of panels are offered, which can be asreferences for engineering application.Secondly, on the basis of experimental study described above, the ultimateload-carrying capacity of the panel is calculated by using elasto-plastic theory oftwo-way slab. The results indicate that elasto-plastic theory is available to thecalculation of ultimate load-carrying capacity of the Two-Way prestressed laminatedconcrete slab and they are safe.Finally, by using ANSYS program nonlinear finite element analysis is carriedout. According to this test nonlinear finite element analysis of the Two-Wayprestressed laminated concrete slab is conducted from imposing loads on it to itsfailure. The validity of finite element analysis is proved and relevant experimentalconclusions are further testified by comparison with experimental load-strain of steelcurve.Above-mentioned investigation results can provide references for engineeringapplication and further study of the Two-Way prestressed laminated concrete slab.