Steelcrete long-span constructions of social buildings

Abstract

Formulation of the problem. The building materials have many disadvantages. Thus, solid concrete is vulnerable to weather conditions and the construction season. This needs financial investments and human resources, which adversely affects the speed and cost of construction of the structure. Early, precast concrete elements stable strength and independence from weather conditions were noted as advantages. Also, prefabricated factory elements are often performed with prestressing reinforcement, which increases the strength of the structure, and the presence of voids in the construction of floor slabs greatly facilitates the weight of each concrete plate and the floor as a whole. The prefabricated elements also provide a high speed of installation of the structure due to the absence of the need to  deploy  the formwork, and the lack of technological breaks for the  hardening of concrete.  Steelcrete  is a composite structure consisting of a steel section, connected by shear connectors to concrete, using the strengths of both steel and con crete, and reducing their drawbacks. From composite steel it was erected a lot of  complex structures with a high level  of responsibility. As a rule, such strength and endurance is used in bridges, but if necessary, solutions in difficult conditions, reinforced co ncrete also finds wide application.  The purpose  of the investigation  is to  study the work of  composite  floors on large spans, and to check  the effectiveness of the proposed design.  The results  show that the  composite slab with  precast reinforced concrete slabs, what  are used as fixed formwork,  is lighter, stronger, material is cheaper, and less deformed compared to the conventional steel reinforced slab over profiled flooring. The practical significance of this study lies in the ability to maximize the work of the section and minimize the economic and time costs of construction.