In order to reduce the damage of reinforced concrete piers in earthquake and realize economic and rapid recovery after earthquake,a new pre-pressed disc-spring self-centering concrete pier(PDS-SCCP)is proposed in this paper.The whole structure and working principle of PDS-SCCP are introduced in detail.The hysteretic model describing the hysteretic behavior of PDS-SCCP are established.A numerical model of PDS-SCCP was established by using ABAQUS.The results of ABAQUS calculation were compared with those of the hysteretic model.The results show that the hysteretic model established in this paper can accurately describe the mechanical properties of PDS-SCCP at each stage.Under reciprocating load,PDS-SCCP can achieve the desired working mechanism.The plastic damage of PDS-SCCP focus on the energy dissipation devices,and the reinforced concrete bridge pier keep elasticity.The self-centering devices of PDS-SCCP are overall elastic and can stably provide self-centering to the bridge pier.
维普
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