The finite element model of the top three segments in the anchorage zone of Meixihe Bridge is calculated and analyzed when the circumferential pre-stress and the cable force of carrying capacity are exerted alone and when the structure is in ultimate limit state and serviceability limit state.The results show that the stress concentration lies at the location of gear blocks,the tendon channels and the corners in the real bridge model;the displacement direction is contrary when the circumferential pre-stress...