The Analysis Of Prestressed Laminated Slab Stress Performance And The Laminated Surface Shear Strength

Prestressed concrete hollow composite floor slab combined with cast-in-situ floor and precast floor slab double merit, has the good team, the seismic performance is superior, and can shorten the construction period, saving material. The composite structure is the current international is a tendency. Concrete composite floor slab are the main stress components in factory prefabrication, high mechanization degree, specialized technical skill, good quality components. And prefabricated components template can be. duplicated, save three material, and can shorten the construction period. Prefabricated components can adopt prestressed technique, reduce the dosage of steel, and can be used with the force of each section, using different strength of the material. Considering the advantages of this component, we believe that this component will be the use of international a big trend. This paper in prestressed composite component basis, the prestressed concrete hollow slab do a thorough study superimposed.Through the analysis on these six pieces of130mm thick spiral ribs prestressed concrete hollow slab structure performance inspection, demonstrates this type superimposed slab floor boards of feasibility. For180mm thick prestressed spiral ribs prestressed concrete composite floor slab static loading test, and carries on the structure performance inspection. And130mm thick prestressed concrete hollow slab spiral ribs structure testing performance analysis, found the craze of laminated board load, limit load of the floor is increased greatly and the structure performance qualified, explain this composite plate can be used in engineering practice.Using the finite element analysis software for prestressed concrete hollow superimposed slab of simulated test model, and compared with the results of comparative analysis. In this paper are analyzed by using ANSYS consider composite surface sliding and don’t consider composite surface sliding the two cases of the experiment model. Analyses the spiral ribs prestressed concrete hollow composite board the mechanical properties, deformation performance, crack development, composite surface force working characteristic and the shear capacity and the influencing factors, and to further explore the structure performance, used in practical projects to provide important basis. Comparing the two kinds of model analysis results, demonstrates the composite surface slip on board bearing capacity have adverse impact.This paper in a spiral ribs prestressed concrete composite board test, based on the analysis of the composite superimposed slab shear strength. Composite surface crack formation and development and inclined cracks have immediate concern, if members do not appear inclined cracks, general won’t appear superimposed surface cracking destruction. With reference to test phenomenon, this paper puts forward a and the composite face plate span shear strength calculation formula. In engineering, according to the parameters should be superimposed slab choosing different of laminated face processing mode.