Performance and cost relationship between supporting reinforced concrete structure system selection

In reinforced concrete structures, selection of structural system has a direct influence on the performance and cost of the structure. What is expected of the structural design is the performance, economy, functionality, aesthetics and practicality of the construction. Performance and cost association of structures has advantages and disadvantages in the equilibrium of safety-economy depending on variables such as the number of storeys in the structure, type of carrier system and structural system behaviour factor. One of the most important factors in structural safety is the selection of structural carrier system. Framed structures are expected to behave ductile, while shear wall structures are expected to behave rigid. In the design and analysis of structural system, standards and regulations are also used in addition to professional knowledge. Within this context, "Specifications for Structures to be built in Disaster Areas" is used in our country, which is in the seismic belt, for designing earthquake resistant buildings. Framed, shear-wall framed and shear-wall carrier systems were varied as 4, 8, 12, 16, 20 storeys in each system. Building floor areas were chosen as 12x12 metre, 24x24 metre, 36x36 metre. Structural system behaviour factors were taken as normal ductile and high ductile. In each model, building importance factor was stabilized as I=1, earthquake area was stabilized as 1o, spectrum period was stabilized as Ta:0,15/Tb:0,6sec, subgrade modulus was stabilized as; 2000t/m3, safe bearing capacity was stabilized as 30t/m2 and concrete classification was stabilized as C30. Mode superposition method was used to calculate the earthquake loads on designed models. Performances of the models were compared according to maximum vertical displacement and free vibration period. For cost analyses, 2018 unit prices published by "Ministry of Environment and Urban Planning Directorate of High Technics Board" were used. As a conclusion, the purpose of the study was to find out which structural system can be optimum in terms of performance and cost under specific conditions.