Quantification of the seismic parameters of building frame systems with linked columns

The linked column frame (LCF) system is a new steel lateral load resisting system that is developed with the aim of creating the capability of quick and simple repair of buildings after earthquakes. The LCF system is a combination of a primary linked column (LC) system and a secondary moment frame (MF) system that together resist lateral loads. On the other hand, more recent studies have shown that the linked column (LC) system individually has the ability to resist lateral loads and provides sufficient seismic capacity. Therefore, due to the importance of presenting the seismic performance factors of response modification coefficient (R), over strength factor (Ω0 ) and deflection amplification factor (Cd ) in seismic codes and the need for these factors for the seismic analysis and structural design using a linear analysis method, in this research the quantification of the values of these seismic factors for the linked column system (LCS) is discussed. Moreover, a comparison of the value of materials used in the skeleton of models designed with different structural systems is made, which examines the weight of elements in each system separately, and it compares the LCF and LCS system with other common structural systems in terms of steel used in the structure. The results show that the response modification coefficient of the linked column system (LCS) is equal to 8, similar to the linked column frame (LCF) and moment resisting frame (MRF) systems. But the over strength factor of the LCS system is slightly lower than the LCF and MRF systems, which is equal to 2.7. Also, the deflection amplification factor of the LCF system is the same as the moment resisting frame system, but in the design of the LCS system, using a linear analysis, a larger interstory drift can be allowed in the upper half of the building, because for the design of linked column (LC), the rotation of links is usually a critical criterion for design.