Determination of Behavior Coefficient of Prefabricated Concrete Frame ith Prefabricated Shear Walls

Abstract

Increasing population in recent decades has made the necessity of quick low cost construction unavoidable. Meanwhile the use of prefabricated concrete frame with prefabricated concrete shear walls due to better quality of performance and reduction of manufacturing time is a good option for public multiple floor buildings. These structures in addition to resistance to seismic loads have more flexibility in methods of construction. There is little information about the exact behavior of prefabricated concrete frame with shear walls under earthquake and dynamic loads. Hence much research has been done by various researchers on the seismic behavior of these structures in the form of experimental and analytical models. Today, the main section of the seismic design of buildings is done based on equivalent static force method and calculating earthquake force of design from earthquake linear spectrum by applying a reduction coefficient called behavior coefficient of structure that embrace philosophy of design. So the necessity of determining behavior coefficient with respect to its importance in seismic design of structures seems essential. The behavior coefficient of structure is a coefficient that includes inflexible function of structure and indicates strength and hidden ductility of structure in inflexible stage. In this study various types of pre-fabricated concrete frames together with pre-fabricated 4 and 8-storey shear walls with 1 and 3 bays are studied. The effect of two kinds of uniform and triangular loading on behavior factor has also been taken into consideration. Non-linear static analysis method (Push-over) has been used in order to determine the behavior factor. On the whole, the results have shown that by increasing the bays and building storeys the structural behavior coefficient was increased.