In this paper, structural properties of truss beams with eccentric members are investigated by numerical analysis. The analytical parameters are the length and properties of the eccentric members. As a result, it is cleared that the plastic deformation behavior of such truss beams is improved, if the eccentric members yield before the critical chord member buckles. The initial stiffness and the maximum strength do not largely depend on the sectional properties of eccentric members. The slenderness ratio of the eccentric members can be a deciding factor not only in the yield load but also in the plastic deformation capacity.
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