Reinforced Concrete Composite Performance Study

To join in the prefabricated steel truss form messenger steel bar truss concrete composite plate, it is a new type of composite floor form. As a result of the existence of steel truss, make it in the construction phase of the short-term stiffness is greater than that of ordinary composite floor slab.Do not need the template and support, and in the construction phase can cooperate in the steel structure housing steel beam and steel column prefabricated in the factory, and on-site installation and quick construction requirements.The article first introduces the development history of composite plate at home and abroad and the development situation and the advantages and disadvantages, and then expounds the definition of steel truss composite plate and the existing theory of the design of steel truss composite plate.Then on the basis of the theory of existing steel truss composite board research, through the establishment of the finite element model of sixteen and analysis, probes into the thickness of the slab, the strength grade of concrete, steel bar truss rod diameter and lower chord axial distance on the truss for messenger short-term stiffness of prefabricated steel bar truss concrete reiteration plate.From a study of the above four factors on the influence of the stiffness of prefabricated, by means of a steel truss composite plate in the use of stage, construction stage, transport hoisting stage and production stage in the process of component bearing capacity, crack control grade, calculating the deflection, etc, so as to complete the messenger calculation in the design of reinforced concrete truss composite one-way slab.