An Alternative Approach for the Design of Chevron-Braced Frames

The design of steel chevron-braced frames as per Eurocode 8 is based on the idea that only braces should buckle and yield during ground motions, while other members remain elastic. elastic braced also allowed. However, in both cases, seismic performance frame may be compromised because premature yielding/buckling columns. This paper proposes an alternative procedure promotes yielding beams addition to braces. mitigates vertical unbalanced force transmitted by compressive tensile beam turn reduces internal forces result overall improvement owing reduction number cases which failure columns occurs before full exploitation ductility capacity dissipative members. proposed validated incremental dynamic analyses performed a set frames. In particular, peak accelerations designed at attainment Significant Damage Collapse Prevention limit states are determined compared those according 8. Furthermore, Eurocodes method terms structural cost.