Abstract: Because of the force transmission between adjacent rings, the mechanical behaviors and failure patterns of staggered segment lining are diametrically different from that of segment with straight joint. In this paper, threering bending experiments were carried out to obtain the ultimate bearing capacity and mechanical behavior of staggered segment lining, the synergy of longitudinal joint, circumferential joint and segment itself was analyzed, the influence of longitudinal force and loading level on structural properties was obtained through a set of designed conditions. By comparing the mechanical behaviors and failure patterns of three-ring bending experiments and singlering bending experiments, the mechanical behaviors of staggered tunnel segment lining and force transmission between adjacent rings were gained.