Advantages of using dissipative connections in the diagonals of high rise concentric braced frames

The paper presents a quantitative comparison of two seismic design of a concentric braced frame of 15 storey height for a 0.4 g PGA: one classical design in which connections of diagonals are capacity designed to the diagonal sections and one innovative design introducing dissipative connections at the ends of the diagonals. The structures are first designed by equivalent static design. Pushover analysis and non linear dynamic analyses are then performed to compare the real behavior and performance of the structures. The advantages of using dissipative connections are confirmed in a high rise flexible building.